SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Management Holdings Limited

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 5,283,264.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 5,283,264.00

Aggregate Amount Beneficially Owned by Each Reporting Person

5,283,264.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

6.2 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Row 6, Row 8 and Row 9 represent (1) 3,635,597 shares of Class A Common Stock indirectly held on behalf of the Reporting Person and (2) 1,647,667 shares of Class A Common Stock subject to warrants indirectly held on behalf of the Reporting Person. Subsequent to September 30, 2025, October 27, 2025, such warrants were exercised on a net-exercise basis, resulting in the issuance of 1,646,317 shares of Class A Common Stock. The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Heartflow UK Limited

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

UNITED KINGDOM

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 3,635,597.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 3,635,597.00

Aggregate Amount Beneficially Owned by Each Reporting Person

3,635,597.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

4.3 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Tourmaline LuxCo S.a.r.l.

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

LUXEMBOURG

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,647,667.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,647,667.00

Aggregate Amount Beneficially Owned by Each Reporting Person

1,647,667.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

1.9 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Row 6, Row 8 and Row 9 represent 1,647,667 shares of Class A Common Stock subject to warrants indirectly held on behalf of the Reporting Person. Subsequent to September 30, 2025, on October 27, 2025, such warrants were exercised on a net-exercise basis, resulting in the issuance of 1,646,317 shares of Class A Common Stock. The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Healthcare Opportunities Fund GP S.a.r.l.

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

LUXEMBOURG

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,267,181.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,267,181.00

Aggregate Amount Beneficially Owned by Each Reporting Person

1,267,181.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

1.5 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Row 6, Row 8 and Row 9 represent (1) 1,061,221 shares of Class A Common Stock indirectly held on behalf of the Reporting Person and (2) 205,960 shares of Class A Common Stock subject to warrants indirectly held on behalf of the Reporting Person. Subsequent to September 30, 2025, on October 27, 2025, such warrants were exercised on a net-exercise basis, resulting in the issuance of 205,791 shares of Class A Common Stock. The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Healthcare Opportunities Invest LP

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,267,181.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,267,181.00

Aggregate Amount Beneficially Owned by Each Reporting Person

1,267,181.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

1.5 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin SOF III GP S.a.r.l.

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

LUXEMBOURG

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,174,580.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,174,580.00

Aggregate Amount Beneficially Owned by Each Reporting Person

1,174,580.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

1.4 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Row 6, Row 8 and Row 9 represent (1) 549,941 shares of Class A Common Stock indirectly held on behalf of the Reporting Person and (2) 624,639 shares of Class A Common Stock subject to warrants indirectly held on behalf of the Reporting Person. Subsequent to September 30, 2025, on October 27, 2025, such warrants were exercised on a net-exercise basis, resulting in the issuance of 624,127 shares of Class A Common Stock. The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Special Opportunities Fund III SCSp

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

LUXEMBOURG

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,174,580.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,174,580.00

Aggregate Amount Beneficially Owned by Each Reporting Person

1,174,580.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

1.4 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Hostplus GP Limited

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 123,243.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 123,243.00

Aggregate Amount Beneficially Owned by Each Reporting Person

123,243.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.1 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Row 6, Row 8 and Row 9 represent (1) 56,691 shares of Class A Common Stock indirectly held on behalf of the Reporting Person and (2) 66,552 shares of Class A Common Stock subject to warrants indirectly held on behalf of the Reporting Person. Subsequent to September 30, 2025, on October 27, 2025, such warrants were exercised on a net-exercise basis, resulting in the issuance of 66,498 shares of Class A Common Stock. The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Hostplus LP

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

UNITED KINGDOM

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 123,243.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 123,243.00

Aggregate Amount Beneficially Owned by Each Reporting Person

123,243.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.1 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Chief GP Limited

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 236,807.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 236,807.00

Aggregate Amount Beneficially Owned by Each Reporting Person

236,807.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.3 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Row 6, Row 8 and Row 9 represent (1) 164,624 shares of Class A Common Stock indirectly held on behalf of the Reporting Person and (2) 72,183 shares of Class A Common Stock subject to warrants indirectly held on behalf of the Reporting Person. Subsequent to September 30, 2025, on October 27, 2025, such warrants were exercised on a net-exercise basis, resulting in the issuance of 72,125 shares of Class A Common Stock. The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Chief LP

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 236,807.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 236,807.00

Aggregate Amount Beneficially Owned by Each Reporting Person

236,807.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.3 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

SunHay GP Limited

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 217,086.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 217,086.00

Aggregate Amount Beneficially Owned by Each Reporting Person

217,086.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.3 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Row 6, Row 8 and Row 9 represent (1) 92,297 shares of Class A Common Stock indirectly held on behalf of the Reporting Person and (2) 124,789 shares of Class A Common Stock subject to warrants indirectly held on behalf of the Reporting Person. Subsequent to September 30, 2025, on October 27, 2025, such warrants were exercised on a net-exercise basis, resulting in the issuance of 124,687 shares of Class A Common Stock. The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

SunHay LP

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

UNITED KINGDOM

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 217,086.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 217,086.00

Aggregate Amount Beneficially Owned by Each Reporting Person

217,086.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.3 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Big Cypress GP Limited

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 246,672.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 246,672.00

Aggregate Amount Beneficially Owned by Each Reporting Person

246,672.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.3 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Row 6, Row 8 and Row 9 represent (1) 171,481 shares of Class A Common Stock indirectly held on behalf of the Reporting Person and (2) 75,191 shares of Class A Common Stock subject to warrants indirectly held on behalf of the Reporting Person. Subsequent to September 30, 2025, on October 27, 2025, such warrants were exercised on a net-exercise basis, resulting in the issuance of 75,129 shares of Class A Common Stock. The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Big Cypress LP

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 246,672.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 246,672.00

Aggregate Amount Beneficially Owned by Each Reporting Person

246,672.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.3 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Hamilton GP Limited

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 97,498.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 97,498.00

Aggregate Amount Beneficially Owned by Each Reporting Person

97,498.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.1 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Hamilton LP

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 97,498.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 97,498.00

Aggregate Amount Beneficially Owned by Each Reporting Person

97,498.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.1 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Opal 2020 GP Limited

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 968,606.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 968,606.00

Aggregate Amount Beneficially Owned by Each Reporting Person

968,606.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

1.1 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Row 6, Row 8 and Row 9 represent (1) 401,112 shares of Class A Common Stock indirectly held on behalf of the Reporting Person and (2) 166,382 shares of Class A Common Stock subject to warrants indirectly held on behalf of the Reporting Person. Subsequent to September 30, 2025, on October 27, 2025, such warrants were exercised on a net-exercise basis, resulting in the issuance of 166,245 shares of Class A Common Stock. The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Opal 2020 (A) LP

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

UNITED KINGDOM

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 241,179.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 241,179.00

Aggregate Amount Beneficially Owned by Each Reporting Person

241,179.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.3 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Row 6, Row 8 and Row 9 represent (1) 174,627 shares of Class A Common Stock indirectly held on behalf of the Reporting Person and (2) 66,552 shares of Class A Common Stock subject to warrants indirectly held on behalf of the Reporting Person. Subsequent to September 30, 2025, on October 27, 2025, such warrants were exercised on a net-exercise basis, resulting in the issuance of 66,498 shares of Class A Common Stock. The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Opal 2020 (B) LP

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

UNITED KINGDOM

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 326,315.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 326,315.00

Aggregate Amount Beneficially Owned by Each Reporting Person

326,315.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.4 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Row 6, Row 8 and Row 9 represent (1) 226,485 shares of Class A Common Stock indirectly held on behalf of the Reporting Person and (2) 99,830 shares of Class A Common Stock subject to warrants indirectly held on behalf of the Reporting Person. Subsequent to September 30, 2025, on October 27, 2025, such warrants were exercised on a net-exercise basis, resulting in the issuance of 99,747 shares of Class A Common Stock The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin SOF II GP Limited

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 311,971.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 311,971.00

Aggregate Amount Beneficially Owned by Each Reporting Person

311,971.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.4 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person: Row 6, Row 8 and Row 9 represent 311,971 shares of Class A Common Stock subject to warrants indirectly held on behalf of the Reporting Person. Subsequent to September 30, 2025, on October 27, 2025, such warrants were exercised on a net-exercise basis, resulting in the issuance of 311,715 shares of Class A Common Stock. The percentage ownership reported in Row 11 was calculated based upon an aggregate of 85,158,719 shares of Class A Common Stock outstanding as of October 31, 2025 as reported in Heartflow, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025 filed with the Securities and Exchange Commission on November 12, 2025.

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Special Opportunities Fund II LP

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

CAYMAN ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 311,971.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 311,971.00

Aggregate Amount Beneficially Owned by Each Reporting Person

311,971.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.4 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin SOF III AIV GP S.a.r.l.

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

LUXEMBOURG

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 1,040,732.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,040,732.00

Aggregate Amount Beneficially Owned by Each Reporting Person

1,040,732.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

1.2 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin AUS AIV LP - Hostplus Series

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 100,209.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 100,209.00

Aggregate Amount Beneficially Owned by Each Reporting Person

100,209.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.1 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin Special Opportunities Fund III AIV LP

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 798,665.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 798,665.00

Aggregate Amount Beneficially Owned by Each Reporting Person

798,665.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.9 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

CUSIP No.

42238D107

Names of Reporting Persons

Hayfin AUS AIV LP - AUS SOF III Series

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

Sec Use Only

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 141,858.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 141,858.00

Aggregate Amount Beneficially Owned by Each Reporting Person

141,858.00

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in row (9)

0.2 %

Type of Reporting Person (See Instructions)

SCHEDULE 13G

Item 1.

(a)

Name of issuer:

HEARTFLOW, INC.

(b)

Address of issuer's principal executive offices:

331 E. Evelyn Avenue Mountain View, California 94041

Item 2.

(a)

Name of person filing:

Hayfin Management Holdings Limited Hayfin Heartflow UK Limited Hayfin Tourmaline LuxCo S.a.r.l. Hayfin Healthcare Opportunities Fund GP S.a.r.l. Hayfin Healthcare Opportunities Invest LP Hayfin SOF III GP S.a.r.l. Hayfin Special Opportunities Fund III ScSp Hayfin Hostplus GP Limited Hayfin Hostplus LP Hayfin Chief GP Limited Hayfin Chief LP SunHay GP Limited SunHay LP Hayfin Big Cypress GP Limited Hayfin Big Cypress LP Hayfin Hamilton GP Limited Hayfin Hamilton LP Hayfin Opal 2020 GP Limited Hayfin Opal (A) LP Hayfin Opal (B) LP Hayfin SOF II GP Limited Hayfin SOF II GP LP Hayfin Special Opportunities Fund II LP Hayfin SOF III AIV GP S.a.r.l. Hayfin AUS AIV LP - Hostplus Series Hayfin Special Opportunities Fund III AIV LP Hayfin AUS AIV LP AUS SOF III Series

(b)

Address or principal business office or, if none, residence:

The principal business office of Hayfin Management Holdings Limited and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of Hayfin Heartflow UK Limited and each of its executive officers is: 65 Davies Street London W1K 5JL England The principal business office of Hayfin Tourmaline LuxCo S.a.r.l. and each of its executive officers is: 15 Boulevard F.W. Raffeisen L-2411 Luxembourg The principal business office of Hayfin Healthcare Opportunities Fund GP S.a.r.l. and each of its executive officers is: 15 Boulevard F.W. Raffeisen L-2411 Luxembourg The principal business office of Hayfin Healthcare Opportunities Invest LP and each of its executive officers is: c/o The Corporation Trust Company Corporation Trust Center 1209 Orange Street Wilmington, Delaware 19801 The principal business office of Hayfin SOF III GP S.a.r.l. and each of its executive officers is: 15 Boulevard F.W. Raffeisen L-2411 Luxembourg The principal business office of Hayfin Special Opportunities Fund III ScSp and each of its executive officers is: 15 Boulevard F.W. Raffeisen L-2411 Luxembourg The principal business office of Hayfin Hostplus GP Limited and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of Hayfin Hostplus LP and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of Hayfin Chief GP Limited and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of Hayfin Chief LP and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of SunHay GP Limited and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of SunHay LP and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of Hayfin Big Cypress GP Limited and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of Hayfin Big Cypress LP and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of Hayfin Hamilton GP Limited and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of Hayfin Hamilton LP and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of Hayfin Opal 2020 GP Limited and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of Hayfin Opal 2020 (A) LP and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of Hayfin Opal 2020 (B) LP and each of its executive officers is: One Nexus Way Camana Bay George Town, Grand Cayman KY1-9005 Cayman Islands The principal business office of Hayfin SOF II GP Limited and each of its executive officers is: Walkers Corporate Limited 190 Elgin Avenue George Town, Grand Cayman KY1-9008 Cayman Islands The principal business office of Hayfin Special Opportunities Fund II LP and each of its executive officers is: Walkers Corporate Limited 190 Elgin Avenue George Town, Grand Cayman KY1-9008 Cayman Islands The principal business office of Hayfin SOF III AIV GP S.a.r.l. and each of its executive officers is: 15 Boulevard F.W. Raiffeisen L-2411 Luxembourg The principal business office of Hayfin AUS AIV LP - Hostplus Series, and each of its executive officers is: c/o The Corporation Trust Company Corporation Trust Center 1209 Orange Street New Castle County Wilmington, Delaware 19801 The principal business office of Hayfin Special Opportunities Fund III AIV LP and each of its executive officers is: c/o The Corporation Trust Company Corporation Trust Center 1209 Orange Street New Castle County Wilmington, Delaware 19801 The principal business office of Hayfin AUS AIV LP - AUS SOF III Series, and each of its executive officers is: c/o The Corporation Trust Company Corporation Trust Center 1209 Orange Street New Castle County Wilmington, Delaware 19801

(c)

Citizenship:

Hayfin Management Holdings Limited is a Cayman Islands exempted company. Hayfin Heartflow UK Limited is a limited company incorporated in England and Wales. Hayfin Tourmaline LuxCo S.a.r.l.is a limited liability company incorporated in Luxembourg. Hayfin Healthcare Opportunities Fund GP S.a.r.l. is a limited liability company incorporated in Luxembourg. Hayfin Healthcare Opportunities Invest LP is a Delaware limited partnership. Hayfin SOF III GP S.a.r.l. is a limited liability company incorporated in Luxembourg. Hayfin Special Opportunities Fund III ScSp is a special limited partnership organized in Luxembourg. Hayfin Hostplus GP Limited is a limited company incorporated in England and Wales. Hayfin Hostplus LP is a limited partnership organized in England and Wales. Hayfin Chief GP Limited is a Cayman Islands exempted company. Hayfin Chief LP a Cayman Islands limited partnership. SunHay GP Limited is a Cayman Islands exempted company. SunHay LP is a limited partnership organized in England and Wales. Hayfin Big Cypress GP Limited is a Cayman Islands exempted company. Hayfin Big Cypress LP is a Cayman Islands limited partnership. Hayfin Hamilton GP Limited is a Cayman Islands exempted company. Hayfin Hamilton LP is a limited partnership organized in England and Wales. Hayfin Opal 2020 GP Limited is a Cayman Islands exempted company. Hayfin Opal (A) LP is a limited partnership organized in England and Wales. Hayfin Opal (B) LP is a limited partnership organized in England and Wales. Hayfin SOF II GP Limited is a Cayman Islands exempted company. Hayfin Special Opportunities Fund II LP is a Cayman Islands limited partnership. Hayfin SOF III AIV GP S.a.r.l. is a limited liability company incorporated in Luxembourg. Hayfin AUS AIV LP - Hostplus Series, is a Delaware limited partnership. Hayfin Special Opportunities Fund III AIV LP is a Delaware limited liability company. Hayfin AUS AIV LP - AUS SOF III Series, is a Delaware limited liability company.

(d)

Title of class of securities:

Class A Common Stock, $0.001 par value

(e)

CUSIP No.:

42238D107

Item 3.

If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);

(b)

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

(c)

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);

(d)

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);

(e)

An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f)

An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g)

A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h)

A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:

(k)

Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

Item 4.

Ownership

(a)

Amount beneficially owned:

(a) The reporting persons own an aggregate of 5,283,264 shares of Class A Common Stock of Heartflow, Inc. Direct ownership of such shares by the reporting persons is as follows: Hayfin Management Holdings Limited: 0 Hayfin Heartflow UK Limited: 3,635,597 Hayfin Tourmaline LuxCo S.a.r.l.: 1,647,667 (subject to warrants held by the Reporting Person) Hayfin Healthcare Opportunities Fund GP S.a.r.l.: 0 Hayfin Healthcare Opportunities Invest LP: 0 Hayfin SOF III GP S.a.r.l.: 0 Hayfin Special Opportunities Fund III ScSp: 0 Hayfin Hostplus GP Limited: 0 Hayfin Hostplus LP: 0 Hayfin Chief GP Limited: 0 Hayfin Chief LP: 0 SunHay GP Limited: 0 SunHay LP: 0 Hayfin Big Cypress GP Limited: 0 Hayfin Big Cypress LP: 0 Hayfin Hamilton GP Limited: 0 Hayfin Hamilton LP: 0 Hayfin Opal 2020 GP Limited: 0 Hayfin Opal (A) LP: 0 Hayfin Opal (B) LP: 0 Hayfin SOF II GP Limited: 0 Hayfin Special Opportunities Fund II LP: 0 Hayfin SOF III AIV GP S.a.r.l.: 0 Hayfin AUS AIV LP - Hostplus Series: 0 Hayfin Special Opportunities Fund III AIV LP: 0 Hayfin AUS AIV LP - AUS SOF III Series: 0 Hayfin Management Holdings Limited is the sole member of, or the sole shareholder of, the general partners identified in the paragraphs that follow for Hayfin Healthcare Opportunities Invest LP, Hayfin Special Opportunities Fund III ScSp, Hayfin Hostplus LP, Hayfin Chief LP, SunHay LP, Hayfin Big Cypress LP, Hayfin Hamilton LP, Hayfin Opal (A) LP, Hayfin Opal (B) LP, Hayfin Special Opportunities Fund II LP, Hayfin AUS AIV LP - Hostplus Series, Hayfin Special Opportunities Fund III AIV LP and Hayfin AUS AIV LP - AUS SOF III Series. Accordingly, Hayfin Management Holdings Limited may be deemed to beneficially own the shares indirectly held by Hayfin Healthcare Opportunities Invest LP, Hayfin Special Opportunities Fund III ScSp, Hayfin Hostplus LP, Hayfin Chief LP, SunHay LP, Hayfin Big Cypress LP, Hayfin Hamilton LP, Hayfin Opal (A) LP, Hayfin Opal (B) LP, Hayfin Special Opportunities Fund II LP, Hayfin AUS AIV LP - Hostplus Series, Hayfin Special Opportunities Fund III AIV LP and Hayfin AUS AIV LP - AUS SOF III Series. Hayfin Healthcare Opportunities Fund GP S.a.r.l. is the sole member of Hayfin HP GP LLC, which is the general partner of Hayfin Healthcare Opportunities Fund Invest LP. Accordingly, Hayfin Healthcare Opportunities Fund GP S.a.r.l. may be deemed to beneficially own the shares and shares subject to warrants indirectly held through Hayfin Heartflow UK Limited and Hayfin Tourmaline Luxco S.a.r.l., respectively, by Hayfin HP GP LLC, which is the general partner of Hayfin Healthcare Opportunities Fund Invest LP. Hayfin SOF III GP S.a.r.l. is the general partner of Hayfin Special Opportunities Fund III ScSp. Accordingly, Hayfin SOF III GP S.a.r.l. may be deemed to beneficially own the shares and shares subject to warrants indirectly held through Hayfin Heartflow UK Limited and Hayfin Tourmaline Luxco S.a.r.l., respectively, by Hayfin Special Opportunities Fund III ScSp. Hayfin Hostplus GP Limited is the general partner of Hayfin Hostplus LP. Accordingly, Hayfin Hostplus GP Limited may be deemed to beneficially own the shares and shares subject to warrants indirectly held through Hayfin Heartflow UK Limited and Hayfin Tourmaline Luxco S.a.r.l., respectively, by Hayfin Hostplus LP. Hayfin Chief GP Limited is the general partner of Hayfin Chief LP. Accordingly, Hayfin Chief GP Limited may be deemed to beneficially own the shares and shares subject to warrants indirectly held through Hayfin Heartflow UK Limited and Hayfin Tourmaline Luxco S.a.r.l., respectively, by Hayfin Chief LP. SunHay GP Limited is the general partner of SunHay LP. Accordingly, SunHay GP Limited may be deemed to beneficially own the shares and shares subject to warrants indirectly held by SunHay LP. Hayfin Big Cypress GP Limited is the general partner of Hayfin Big Cypress LP. Accordingly, Hayfin Big Cypress GP Limited may be deemed to beneficially own the shares and shares subject to warrants indirectly held through Hayfin Heartflow UK Limited and Hayfin Tourmaline Luxco S.a.r.l., respectively, by Hayfin Big Cypress LP. Hayfin Hamilton GP Limited is the general partner of Hayfin Hamilton LP. Accordingly, Hayfin Hamilton GP Limited may be deemed to beneficially own the shares indirectly held through Hayfin Heartflow UK Limited by Hayfin Hamilton LP. Hayfin Opal 2020 GP Limited is the general partner of each of Hayfin Opal 2020 (A) LP and Hayfin Opal 2020 (B) LP. Accordingly, Hayfin Opal 2020 GP Limited may be deemed to beneficially own the shares and shares subject to warrants indirectly held through Hayfin Heartflow UK Limited and Hayfin Tourmaline Luxco S.a.r.l., respectively, by Hayfin Opal 2020 (A) LP and Hayfin Opal 2020 (B) LP. Hayfin SOF II GP Limited is the general partner of Hayfin SOF II GP LP which is the general partner of Hayfin Special Opportunities Fund II LP. Accordingly, Hayfin SOF II GP Limited may be deemed to beneficially own the shares subject to warrants indirectly held through Hayfin Tourmaline Luxco S.a.r.l.by Hayfin Special Opportunities Fund II LP. Hayfin SOF III AIV GP S.a.r.l. is the sole member of (i) Hayfin AUS AIV GP LLC, which is the general partner of Hayfin AUS AIV LP - Hostplus Series, (ii) Hayfin SOF III AIV GP LLC, which is the general partner of Hayfin Special Opportunities Fund III AIV LP and (iii) Hayfin AUS AIV GP LLC, which is the general partner of Hayfin AUS AIV LP - AUS SOF III Series. Accordingly, Hayfin SOF III AIV GP S.a.r.l. may be deemed to beneficially own the shares indirectly held through Hayfin Heartflow UK Limited by Hayfin AUS AIV LP - Hostplus sSeries, Hayfin Special Opportunities Fund III AIV LP and Hayfin AUS AIV LP - AUS SOF III Series. The foregoing should not be construed in and of itself as an admission by any reporting person as to beneficial ownership of any shares owned by another reporting person. Hayfin Management Holdings Limited, Hayfin Healthcare Opportunities Fund GP S.a.r.l., Hayfin SOF III GP S.a.r.l., Hayfin Hostplus GP Limited, Hayfin Chief GP Limited, SunHay GP Limited, Hayfin Big Cypress GP Limited, Hayfin Hamilton GP Limited, Hayfin Opal 2020 GP Limited, Hayfin SOF II GP Limited and Hayfin SOF III AIV GP S.a.r.l. each disclaim beneficial ownership of such securities except to the extent of their pecuniary interests therein.

(b)

Percent of class:

See Cover Pages Items 5-11.

(c)

Number of shares as to which the person has:

(i) Sole power to vote or to direct the vote:

See Cover Pages Items 5-9.

(ii) Shared power to vote or to direct the vote:

See Cover Pages Items 5-9.

(iii) Sole power to dispose or to direct the disposition of:

See Cover Pages Items 5-9.

(iv) Shared power to dispose or to direct the disposition of:

See Cover Pages Items 5-9.

Item 5.

Ownership of 5 Percent or Less of a Class.

Not Applicable

Item 6.

Ownership of more than 5 Percent on Behalf of Another Person.

If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.

See Item 4.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.

Not Applicable

Item 8.

Identification and Classification of Members of the Group.

If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(K), so indicate under Item 3(k) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group.

See Exhibit 99.1.

Item 9.

Notice of Dissolution of Group.

Not Applicable

Item 10.

Certifications:

Not Applicable

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Hayfin Management Holdings Limited

Signature:	By: /s/ David Rushford
Name/Title:	David Rushford, Authorised Signatory
Date:	11/13/2025

Hayfin Heartflow UK Limited

Signature:	By: /s/ Jessica Gray
Name/Title:	Jessica Gray, Director
Date:	11/13/2025

Hayfin Tourmaline LuxCo S.a.r.l.

Signature:	By: /s/ John Molloy
Name/Title:	John Molloy, Manager
Date:	11/13/2025

Signature:	By: /s/ Taavi Davies
Name/Title:	Taavi Davies, Manager
Date:	11/13/2025

Hayfin Healthcare Opportunities Fund GP S.a.r.l.

Signature:	By: /s/ John Molloy
Name/Title:	John Molloy, Manager
Date:	11/13/2025

Signature:	By: /s/ Taavi Davies
Name/Title:	Taavi Davies, Manager
Date:	11/13/2025

Hayfin Healthcare Opportunities Invest LP

Signature:	acting by its general partner, HAYFIN HF GP LLC, acting by its sole member, Hayfin Healthcare Opportunities Fund GP S.a.r.l., By: /s/ John Molloy
Name/Title:	John Molloy, Manager
Date:	11/13/2025

Signature:	By: /s/ Taavi Davies
Name/Title:	Taavi Davies, Manager
Date:	11/13/2025

Hayfin SOF III GP S.a.r.l.

Signature:	By: /s/ John Molloy
Name/Title:	John Molloy, Manager
Date:	11/13/2025

Signature:	By: /s/ Emmanuel Mougeolle
Name/Title:	Emmanuel Mougeolle, Manager
Date:	11/13/2025

Hayfin Special Opportunities Fund III SCSp

Signature:	acting by its general partner, HAYFIN SOF III GP S.A.R.L., By: /s/ John Molloy
Name/Title:	John Molloy, Manager
Date:	11/13/2025

Signature:	By: /s/ Emmanuel Mougeolle
Name/Title:	Emmanuel Mougeolle, Manager
Date:	11/13/2025

Hayfin Hostplus GP Limited

Signature:	By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin Hostplus LP

Signature:	acting by its general partner, HAYFIN HOSTPLUS GP LIMITED, By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin Chief GP Limited

Signature:	By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin Chief LP

Signature:	acting by its general partner, HAYFIN CHIEF GP LIMITED, By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

SunHay GP Limited

Signature:	By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

SunHay LP

Signature:	acting by its general partner, SUNHAY GP LIMITED, By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin Big Cypress GP Limited

Signature:	By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin Big Cypress LP

Signature:	acting by its general partner, HAYFIN BIG CYPRESS GP LIMITED, By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin Hamilton GP Limited

Signature:	By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin Hamilton LP

Signature:	acting by its general partner, HAYFIN HAMILTON GP LIMITED, By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin Opal 2020 GP Limited

Signature:	By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin Opal 2020 (A) LP

Signature:	acting by its general partner, HAYFIN OPAL 2020 GP LIMITED, By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin Opal 2020 (B) LP

Signature:	acting by its general partner, HAYFIN OPAL 2020 GP LIMITED, By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin SOF II GP Limited

Signature:	By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin Special Opportunities Fund II LP

Signature:	acting by its general partner, HAYFIN SOF II GP LP, acting by its general partner, HAYFIN SOF II GP LIMITED, By: /s/ Anneka Bavalia
Name/Title:	Anneka Bavalia, Director
Date:	11/13/2025

Hayfin SOF III AIV GP S.a.r.l.

Signature:	By: /s/ John Molloy
Name/Title:	John Molloy, Manager
Date:	11/13/2025

Signature:	By: /s/ Emmanuel Mougeolle
Name/Title:	Emmanuel Mougeolle, Manager
Date:	11/13/2025

Hayfin AUS AIV LP - Hostplus Series

Signature:	acting by its general partner, HAYFIN AUS AIV GP LLC, acting by its member, HAYFIN SOF III AIV GP S.A.R.L. -, By: /s/ John Molloy
Name/Title:	John Molloy, Manager
Date:	11/13/2025

Signature:	By: /s/ Emmanuel Mougeolle
Name/Title:	Emmanuel Mougeolle, Manager
Date:	11/13/2025

Hayfin Special Opportunities Fund III AIV LP

Signature:	acting by its general partner, HAYFIN SOF III AIV GP LLC, acting by its sole member, HAYFIN SOF III AIV GP S.A.R.L., By: /s/ John Molloy
Name/Title:	John Molloy, Manager
Date:	11/13/2025

Signature:	By: /s/ Emmanuel Mougeolle
Name/Title:	Emmanuel Mougeolle, Manager
Date:	11/13/2025

Hayfin AUS AIV LP - AUS SOF III Series

Signature:	acting by its general partner, HAYFIN AUS AIV GP LLC, acting by its member, HAYFIN SOF III AIV GP S.A.R.L., By: /s/ John Molloy
Name/Title:	John Molloy, Manager
Date:	11/13/2025

Signature:	By: /s/ Emmanuel Mougeolle
Name/Title:	Emmanuel Mougeolle, Manager
Date:	11/13/2025

Exhibit Information

Exhibit Index Exhibit No. Description 99.1 Joint Filing Agreement, dated as of November 13, 2025, by and among Hayfin Management Holdings Limited, Hayfin Heartflow UK Limited, Hayfin Tourmaline LuxCo S.a.r.l., Hayfin Healthcare Opportunities Fund GP S.a.r.l., Hayfin Healthcare Opportunities Invest LP, Hayfin SOF III GP S.a.r.l., Hayfin Special Opportunities Fund III ScSp, Hayfin Hostplus GP Limited, Hayfin Hostplus LP, Hayfin Chief GP Limited, Hayfin Chief LP, SunHay GP Limited, SunHay LP, Hayfin Big Cypress GP Limited, Hayfin Big Cypress LP, Hayfin Hamilton GP Limited, Hayfin Hamilton LP, Hayfin Opal 2020 GP Limited, Hayfin Opal 2020 (A) LP, Hayfin Opal 2020 (B) LP, Hayfin SOF II GP Limited, Hayfin Special Opportunities Fund II LP, Hayfin SOF III AIV GP S.a.r.l., Hayfin AUS AIV LP - Hostplus Series, Hayfin Special Opportunities Fund III AIV LP, and Hayfin AUS AIV LP - AUS SOF III Series.