SCHEDULE 13G

CUSIP No.

1

Names of Reporting Persons

Hill City Capital Master Fund LP

2

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

(a)

(b)

3

Sec Use Only

4

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 12,891,300.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 12,891,300.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

12,891,300.00

10

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

Checkbox not checked

11

Percent of class represented by amount in row (9)

8.4 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP No.

1

Names of Reporting Persons

Hill City Capital GP LLC

2

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

(a)

(b)

3

Sec Use Only

4

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 12,891,300.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 12,891,300.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

12,891,300.00

10

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

Checkbox not checked

11

Percent of class represented by amount in row (9)

8.4 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP No.

1

Names of Reporting Persons

Hill City Capital LP

2

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

(a)

(b)

3

Sec Use Only

4

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 12,891,300.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 12,891,300.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

12,891,300.00

10

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

Checkbox not checked

11

Percent of class represented by amount in row (9)

8.4 %

12

Type of Reporting Person (See Instructions)

PN, IA

SCHEDULE 13G

CUSIP No.

1

Names of Reporting Persons

Hill City GP LLC

2

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

(a)

(b)

3

Sec Use Only

4

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 12,891,300.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 12,891,300.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

12,891,300.00

10

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

Checkbox not checked

11

Percent of class represented by amount in row (9)

8.4 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP No.

1

Names of Reporting Persons

Herbert Frazier

2

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

(a)

(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 12,891,300.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 12,891,300.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

12,891,300.00

10

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

Checkbox not checked

11

Percent of class represented by amount in row (9)

8.4 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.

(a)

Name of issuer:

Array Technologies, Inc.

(b)

Address of issuer's principal executive offices:

3901 Midway Place NE, Albuquerque, New Mexico 87109

Item 2.

(a)

Name of person filing:

This Schedule 13G is being filed by Hill City Capital Master Fund LP (the "Fund"); Hill City Capital GP LLC (the "General Partner"), which serves as the general partner of the Fund; Hill City Capital LP (the "Investment Manager"), which serves as investment manager of the Fund; Hill City GP LLC (the "Investment Manager GP"), which serves as the general partner of the Investment Manager; and Herbert Frazier, who serves as managing member of the General Partner and the Investment Manager GP (each of whom may be referred to herein as a "Reporting Person" and collectively as the "Reporting Persons"). The Reporting Persons are making this single, joint filing, and the agreement among the Reporting Persons to file jointly is attached hereto as Exhibit 1.

(b)

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

The principal business address of the Fund is c/o Ogier Global (Cayman) Limited, 89 Nexus Way, Camana Bay, Grand Cayman KY1-9009. The principal business address of the General Partner, the Investment Manager, the Investment Manager GP and Mr. Frazier is 121 High St, 3rd Floor, Boston, Massachusetts 02110.

(c)

Citizenship:

The Fund is a Cayman Islands exempted limited partnership; each of the General Partner and the Investment Manager GP is a Delaware limited liability company; the Investment Manager is a Delaware limited partnership; and Mr. Frazier is a citizen of the United States.

(d)

Title of class of securities:

Common Stock

(e)

CUSIP No.:

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:

See Item 9 of each cover page.

(b)

Percent of class:

See Item 11 of each cover page, which is based on 154,007,692 shares of Common Stock outstanding as of July 31, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2026 and filed with the Securities and Exchange Commission on August 5, 2026.

(c)

Number of shares as to which the person has:

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

See Item 5 of each cover page.

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

See Item 6 of each cover page.

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

See Item 7 of each cover page.

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

See Item 8 of each cover page.

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.

Not Applicable

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.

Not Applicable

Item 9.

Notice of Dissolution of Group.

Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

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.

Hill City Capital Master Fund LP

Signature:	/s/ Herbert Frazier
Name/Title:	Herbert Frazier/Managing Member of Hill City Capital GP LLC, its General Partner
Date:	08/10/2026

Hill City Capital GP LLC

Signature:	/s/ Herbert Frazier
Name/Title:	Herbert Frazier/Managing Member
Date:	08/10/2026

Hill City Capital LP

Signature:	/s/ Herbert Frazier
Name/Title:	Herbert Frazier/Managing Member of Hill City GP LLC, its General Partner
Date:	08/10/2026

Hill City GP LLC

Signature:	/s/ Herbert Frazier
Name/Title:	Herbert Frazier/Managing Member
Date:	08/10/2026

Herbert Frazier

Signature:	/s/ Herbert Frazier
Name/Title:	Herbert Frazier
Date:	08/10/2026