Investor Frazier Life Sciences IX, L.P.
13D/G Filings

This page shows a list of all the recent 13D/G filings made by Frazier Life Sciences IX, L.P. . Schedule 13D is commonly referred to as a “beneficial ownership report.” The term "beneficial owner" is defined under SEC rules. It includes any person who directly or indirectly shares voting power or investment power (the power to sell the security).

When a person or group of persons acquires beneficial ownership of more than 5% of a voting class of a company’s equity securities, they are required to file a Schedule 13D within ten days after the purchase. Click the link icon to see the full transaction history.

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Date Form Target Prev
Shares		 Current
Shares		 Change
(Percent)		 Ownership
(Percent)		 Change
(Percent)
2025-08-20 13D/A MIRM / Mirum Pharmaceuticals, Inc. 6,226,392 3,735,220
2024-11-06 13G/A TARS / Tarsus Pharmaceuticals, Inc. 1,417,157 1,587,527
2023-09-05 13D/A MIRM / Mirum Pharmaceuticals, Inc. 4,411,107 6,226,392
2023-06-15 13D/A PASG / Passage Bio, Inc. 3,756,915 2,543,698
2023-04-14 13D/A MIRM / Mirum Pharmaceuticals, Inc. 3,861,781 4,411,107
2022-09-26 13D/A PHAT / Phathom Pharmaceuticals, Inc. 8,221,324 8,424,772
2022-08-16 13D/A MIRM / Mirum Pharmaceuticals, Inc. 3,566,912 3,861,781
2022-08-15 13D/A PASG / Passage Bio, Inc. 5,021,438 3,756,915
2022-08-11 13D/A PHAT / Phathom Pharmaceuticals, Inc. 5,843,924 8,221,324
2022-01-28 13G/A TARS / Tarsus Pharmaceuticals, Inc. 1,917,157 1,417,157
2021-02-04 13G/A KRYS / Krystal Biotech, Inc. 895,000 895,000
2021-01-27 13D/A PASG / Passage Bio, Inc. 5,009,219 5,021,438
2020-12-23 13D/A PHAT / Phathom Pharmaceuticals, Inc. 5,843,924 5,843,924
2020-12-18 13D/A MIRM / Mirum Pharmaceuticals, Inc. 3,566,912 3,566,912
2020-10-23 13G TARS / Tarsus Pharmaceuticals, Inc. 1,917,157
2020-06-17 13D/A PHAT / Phathom Pharmaceuticals, Inc. 5,843,924 5,843,924
2020-06-16 13D/A PHAT / Phathom Pharmaceuticals, Inc. 7,284,269 5,843,924
2020-04-29 13D/A MIRM / Mirum Pharmaceuticals, Inc. 3,566,912 3,566,912
2020-03-09 13D PASG / Passage Bio, Inc. 5,009,219
2020-02-13 13G/A KRYS / Krystal Biotech, Inc. 895,000 895,000
2020-02-12 13G/A KRYS / Krystal Biotech, Inc. 875,000 895,000
2019-11-06 13D PHAT / Phathom Pharmaceuticals, Inc. 7,284,269
2019-07-26 13D MIRM / Mirum Pharmaceuticals, Inc. 3,566,912
2019-02-14 13G/A KRYS / Krystal Biotech, Inc. 625,000 875,000
2018-08-27 13G KRYS / Krystal Biotech, Inc. 625,000