Company: PHAT
Filing Date: 2025-05-13
Form Type: SCHEDULE 13D/A
Source: 0001415889-25-012779
Chunk: 1

Company: Phathom Pharmaceuticals, Inc.
Filing Date: 2025-05-13
Form: SCHEDULE 13D/A
Chunk 1
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 is the general partner of Frazier Life Sciences X, L.P. and FHMLS X, L.L.C. is the general partner of FHMLS X, L.P. Patrick J. Heron and James N. Topper are the members of FHMLS X, L.L.C. and therefore share voting and investment power over the shares held by Frazier Life Sciences X, L.P. FHMLS XI, L.P. is the general partner of by Frazier Life Sciences XI, L.P. and FHMLS XI, L.L.C. is the general partner of FHMLS XI, L.P. Patrick J. Heron, James N. Topper and Daniel Estes are the members of FHMLS XI, L.L.C. and therefore share voting and investment power over the shares held by Frazier Life Sciences XI, L.P. FHMLS XII, L.P. is the general partner of Frazier Life Sciences XII, L.P. and FHMLS XII, L.L.C. is the general partner of FHMLS XII, L.P. Patrick J. Heron, James N. Topper and Daniel Estes are the members of FHMLS XII, L.L.C. and therefore share voting and investment power over the shares held by Frazier Life Sciences XII, L.P. The percentage listed in row 13 is calculated based the sum of (i) 69,814,121 shares of the Issuer's Common Stock outstanding as of April 29, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q filed with the SEC on May 1, 2025, (ii) 1,774,790 shares of Common Stock issuable to Frazier Life Sciences Public Fund, L.P. pursuant to pre-funded warrants exercisable within 60 days of May 9, 2025, (iii) 523,547 shares of Common Stock issuable to Frazier Life Sciences Public Overage Fund, L.P. pursuant to pre-funded warrants exercisable within 60 days of May 9, 2025, (iv) 11,085 shares of Common Stock issuable to Frazier Life Sciences XI, L.P. pursuant to pre-funded warrants exercisable within 60 days of May 9, 2025 and (v) 62,500 shares of Common Stock that are issuable upon the exercise of options held directly by Dr. Topper that are exercisable within 60 days of May 9, 2025.

| SCHEDULE 13