| Filed by the Registrant ☒ | Filed by a Party other than the Registrant  ☐ | 
| ☐ | Preliminary Proxy Statement | 
| ☐ | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) | 
| ☐ | Definitive Proxy Statement | 
| ☒ | Definitive Additional Materials | 
| ☐ | Soliciting Material under § 240.14a-12 | 
| ☒ | No fee required. | 
| ☐ | Fee paid previously with preliminary materials. | 
| ☐ | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. | 
|  |  | |
| Equillium, Inc.  2223 Avenida de la Playa, Suite 105 La Jolla, California 92037 (858) 240-1200 Attn: Investor Relations | Metacrine, Inc. 4225 Executive Square, Suite 600 San Diego, CA 92037 (858) 369-7800 Attn: Investor Relations | 
| All Transactions | Total Transaction Value1 | 1 Day Prior Implied Premium + Fees | 5 Day Prior Implied Premium + Fees | 10 Day Prior Implied Premium + Fees | 15 Day Prior Implied Premium + Fees | ||||||||||||||
| Minimum: | $0.5 | 1.67 | % | -21.77 | % | -31.17 | % | -27.70 | % | ||||||||||
| Lower (First) Quartile: | $2.7 | 11.99 | % | 6.09 | % | 2.29 | % | 3.57 | % | ||||||||||
| Median: | $10.0 | 21.29 | % | 23.05 | % | 23.56 | % | 20.74 | % | ||||||||||
| Average: | $17.8 | 26.22 | % | 22.08 | % | 22.74 | % | 19.91 | % | ||||||||||
| Upper (Third) Quartile: | $25.0 | 35.16 | % | 36.38 | % | 38.78 | % | 32.95 | % | ||||||||||
| Maximum: | $85.0 | 76.52 | % | 81.28 | % | 105.46 | % | 79.92 | % | ||||||||||
| 2022 Transactions | Total Transaction Value1 | 1 Day Prior Implied Premium + Fees | 5 Day Prior Implied Premium + Fees | 10 Day Prior Implied Premium + Fees | 15 Day Prior Implied Premium + Fees | ||||||||||||||
| Minimum: | $3.5 | 8.07 | % | -7.86 | % | -13.36 | % | 4.12 | % | ||||||||||
| Lower (First) Quartile: | $12.1 | 10.50 | % | 1.67 | % | 11.34 | % | 16.18 | % | ||||||||||
| Median: | $15.4 | 15.58 | % | 24.37 | % | 43.10 | % | 49.09 | % | ||||||||||
| Average: | $27.5 | 20.51 | % | 24.57 | % | 41.75 | % | 44.02 | % | ||||||||||
| Upper (Third) Quartile: | $33.7 | 22.29 | % | 47.38 | % | 64.37 | % | 69.82 | % | ||||||||||
| Maximum: | $85.0 | 50.52 | % | 57.37 | % | 105.46 | % | 79.92 | % | ||||||||||
| 2021 Transactions | Total Transaction Value | 1 Day Prior Implied Premium + Fees | 5 Day Prior Implied Premium + Fees | 10 Day Prior Implied Premium + Fees | 15 Day Prior Implied Premium + Fees | ||||||||||||||
| Minimum: | $1.0 | 3.14 | % | -21.77 | % | -20.20 | % | -27.70 | % | ||||||||||
| Lower (First) Quartile: | $7.5 | 20.38 | % | -6.16 | % | -8.46 | % | -14.98 | % | ||||||||||
| Median: | $15.0 | 32.26 | % | 8.23 | % | 6.94 | % | 0.73 | % | ||||||||||
| Average: | $19.9 | 35.43 | % | 18.77 | % | 13.22 | % | 9.20 | % | ||||||||||
| Upper (Third) Quartile: | $25.1 | 57.00 | % | 43.48 | % | 26.38 | % | 27.98 | % | ||||||||||
| Maximum: | $75.0 | 76.52 | % | 81.28 | % | 74.04 | % | 65.35 | % | ||||||||||
| 2021 Transactions | Total Transaction Value | 1 Day Prior Implied Premium + Fees | 5 Day Prior Implied Premium + Fees | 10 Day Prior Implied Premium + Fees | 15 Day Prior Implied Premium + Fees | ||||||||||||||
| Minimum: | $1.0 | 3.14 | % | -21.77 | % | -20.20 | % | -27.70 | % | ||||||||||
| Lower (First) Quartile: | $7.5 | 16.12% |  | -11.24% |  | -9.37% |  | -13.27% |  | ||||||||||
| Median: | $14.5 | 32.26 | % | 4.69% |  | 6.63% |  | 0.73 | % | ||||||||||
| Average: | $14.9 | 33.07% |  | 13.33% |  | 8.23% |  | 6.02% |  | ||||||||||
| Upper (Third) Quartile: | $21.6 | 51.15% |  | 42.85% |  | 24.24% |  | 22.93% |  | ||||||||||
| Maximum: | $34.6 | 70.23% |  | 54.69% |  | 52.00% |  | 50.38% |  | ||||||||||
| ($ in millions) | 2022E |  | 2023E |  | 2024E |  | 2025E |  | 2026E | 2027E |  | 2028E |  | 2029E |  | 2030E |  | 2031E |  | 2032E |  | 2033E |  | 2034E | 2035E |  | 2036E |  | 2037E |  | 2038E |  | |||||||||||||||||||
| EBIT | ($56 | ) | ($17 | ) | ($39 | ) | ($29 | ) | ($75 | ) | ($60 | ) | $9 | $85 | $134 | $174 | $177 | $181 | $190 | $193 | $194 | $195 | $203 | ||||||||||||||||||||||||||||
|   (-) Taxes | - | - | - | - | - | - | (0 | ) | (3 | ) | (5 | ) | (7 | ) | (14 | ) | (38 | ) | (39 | ) | (40 | ) | (40 | ) | (41 | ) | (42 | ) | |||||||||||||||||||||||
| NOPAT | ($56 | ) | ($17 | ) | ($39 | ) | ($29 | ) | ($75 | ) | ($60 | ) | $9 | $81 | $129 | $167 | $163 | $143 | $150 | $153 | $154 | $154 | $161 | ||||||||||||||||||||||||||||
|   (-) Change in Net Working Capital | (2 | ) | (1 | ) | 2 | (1 | ) | 2 | (4 | ) | (5 | ) | (9 | ) | (6 | ) | (5 | ) | (1 | ) | (1 | ) | (1 | ) | (1 | ) | (0 | ) | (0 | ) | (1 | ) | |||||||||||||||||||
| Free Cash Flow | ($59 | ) | ($18 | ) | ($37 | ) | ($31 | ) | ($73 | ) | ($63 | ) | $4 | $72 | $123 | $162 | $163 | $143 | $149 | $152 | $153 | $154 | $160 | 
| ($ in millions) | 2023E |  | 2024E |  | 2025E | 2026E |  | 2027E |  | 2028E |  | 2029E |  | 2030E |  | 2031E |  | 2032E |  | 2033E |  | 2034E |  | 2035E |  | 2036E |  | 2037E |  | 2038E |  | |||||||||||||||||
| EBIT | ($8 | ) | ($37 | ) | ($24 | ) | ($75 | ) | ($58 | ) | $9 | $85 | $134 | $174 | $177 | $181 | $190 | $193 | $194 | $195 | $203 | |||||||||||||||||||||||||||
|   (-) Taxes | - | - | - | - | - | (0 | ) | (3 | ) | (5 | ) | (7 | ) | (19 | ) | (38 | ) | (39 | ) | (40 | ) | (40 | ) | (41 | ) | (42 | ) | |||||||||||||||||||||
| NOPAT | ($8 | ) | ($37 | ) | ($24 | ) | ($75 | ) | ($58 | ) | $9 | $81 | $129 | $167 | $158 | $143 | $150 | $153 | $154 | $154 | $161 | |||||||||||||||||||||||||||
|   (-) Change in Net Working Capital | (1 | ) | 3 | (2 | ) | 2 | (4 | ) | (5 | ) | (9 | ) | (6 | ) | (5 | ) | (1 | ) | (1 | ) | (1 | ) | (1 | ) | (0 | ) | (0 | ) | (1 | ) | ||||||||||||||||||
| Free Cash Flow | ($9 | ) | ($34 | ) | ($26 | ) | ($72 | ) | ($62 | ) | $4 | $72 | $123 | $162 | $158 | $143 | $149 | $152 | $153 | $154 | $160 | 
| • | KalVista Pharmaceuticals, Inc. ($247) | 
| • | MoonLake Immunotherapeutics ($216) | 
| • | Allakos Inc. ($87) | 
| • | VectivBio Holding AG ($59) | 
| • | Immunic Inc. ($48) | 
| • | Abivax Societe Anonyme ($122) | 
| • | Akari Therapeutics Plc ($61) | 
| • | X4 Pharmaceuticals, Inc. ($59) | 
| • | Applied Molecular Transport Inc. (– $41) | 
| Publicly Traded Comparable Company | Equity  Value ($ millions) | ||
| VectivBio Holding AG | $105 | ||
| Allakos Inc. | $135 | 
| ($ in millions) | 2022E |  | 2023E |  | 2024E |  | 2025E |  | 2026E |  | 2027E |  | 2028E |  | 2029E |  | 2030E |  | 2031E |  | 2032E |  | 2033E |  | 2034E |  | 2035E |  | 2036E |  | 2037E |  | 2038E |  | |||||||||||||||||
| G&A Savings | $15 | $12 | $12 | $6 | $3 | $3 | $3 | $3 | $3 | $3 | $3 | $3 | $3 | $3 | $3 | $3 | $3 | 
| Varying Sensitivity Inputs | Metacrine Liquidation Analysis Per Share Value | Implied Pro Forma Metacrine Per Share Value Range | ||||
| Cumulative aGVHD POS (40% - 80%) and Combined Company WACC (13.5% - 17.5%) | ||||||
| High End of the Collar (0.151x Exchange Ratio) | $0.58 | $0.52 - $0.89 | ||||
| Implied 0.243x Exchange Ratio, (as of 09/01/2022) | $0.58 | $0.76 - $1.30 | ||||
| Low End of the Collar (0.251x Exchange Ratio) | $0.58 | $0.78 - $1.33 | 
| ($ in millions) | 2022E |  | 2023E |  | 2024E |  | 2025E |  | 2026E |  | 2027E |  | 2028E |  | 2029E |  | 2030E |  | 2031E |  | 2032E |  | 2033E |  | 2034E |  | 2035E |  | 2036E |  | 2037E |  | 2038E |  | |||||||||||||||||
| EBIT | ($80 | ) | ($54 | ) | ($89 | ) | ($107 | ) | ($113 | ) | ($63 | ) | $62 | $167 | $264 | $319 | $441 | $322 | $508 | $235 | $547 | $543 | $534 | ||||||||||||||||||||||||||||
|   (-) Taxes | - | - | - | - | - | - | (2 | ) | (7 | ) | (11 | ) | (13 | ) | (90 | ) | (67 | ) | (106 | ) | (49 | ) | (114 | ) | (113 | ) | (111 | ) | |||||||||||||||||||||||
| NOPAT | ($80 | ) | ($54 | ) | ($89 | ) | ($107 | ) | ($113 | ) | ($63 | ) | $60 | $161 | $254 | $306 | $351 | $255 | $402 | $186 | $433 | $430 | $424 | ||||||||||||||||||||||||||||
|   (-) Change in Net Working Capital | - | - | - | (2 | ) | (1 | ) | (7 | ) | (11 | ) | (14 | ) | (14 | ) | (11 | ) | (6 | ) | (4 | ) | (5 | ) | (4 | ) | (2 | ) | 0 | 1 | ||||||||||||||||||||||
| Free Cash Flow | ($80 | ) | ($54 | ) | ($89 | ) | ($108 | ) | ($114 | ) | ($70 | ) | $49 | $147 | $239 | $295 | $345 | $251 | $397 | $182 | $431 | $430 | $424 | 
| • | KalVista Pharmaceuticals, Inc. (– $30) | 
| • | MoonLake Immunotherapeutics ($222) | 
| • | VectivBio Holding AG ($159) | 
| • | Immunic Inc. ($232) | 
| • | Abivax Societe Anonyme ($155) | 
| • | Akari Therapeutics Plc ($58) | 
| • | X4 Pharmaceuticals, Inc. ($114) | 
| • | Applied Molecular Transport Inc. (– $44) | 
| Publicly Traded Comparable Company | Equity  Value ($ millions) | |||
| Akari Therapeutics Plc |  | $80 | ||
| X4 Pharmaceuticals, Inc. |  | $130 | ||
| Metric | Metric Range ($ millions) | Implied Equillium Price Per Share | ||||||
| Equity Value |  | $125 - $175 |  | $3.70 - $5.05 | ||||
| Varying Sensitivity Inputs | Total Pro Forma Metacrine Per Share Value Range (in millions) | Implied Pro Forma Metacrine Per Share Value Range | ||||||
| Cumulative aGVHD POS (40% - 80%) and Combined Company WACC (14.0% - 18.0%) | ||||||||
| Low End of the Collar (0.282x Exchange Ratio) | $300-$615 |  | $6.30 - $12.70 | |||||