13F Filings History of Foresite Capital Management IV, LLC

Latest 13F report
Q4 2025 - 17 Feb 2026
Value $
$229,710,880
Signature - Title
James B. Tananbaum - Managing Member
Location
West Hollywood, CA
Summary
This page shows a list of all the recent 13F filings made by Foresite Capital Management IV, LLC. Form 13F is required to be filed within 45 days of the end of a calendar quarter. Foresite Capital Management IV, LLC reported 7 stock holdings with total value $229,710,880 as of Q4 2025. Top holdings included PHVS, CYTK, LYEL, MAZE, and RLAY.

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Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Filing Time
Q4 2025 7 $229,710,880 +$6,064,032 $0 +$6,064,032 PHVS, CYTK, LYEL, MAZE, RLAY 13F-HR 13 Feb 2026, 17:55
Q3 2025 6 $182,608,465 +$34,369,493 -$45,922,973 -$11,553,480 PHVS, CYTK, MAZE, LYEL, XENE 13F-HR 14 Nov 2025, 16:07
Q2 2025 6 $123,796,408 +$12,083,527 -$10,314,453 +$1,769,074 PHVS, MAZE, LYEL, XENE, KURA 13F-HR 12 Aug 2025, 16:01
Q1 2025 5 $111,069,074 +$27,585,071 -$4,059,000 +$23,526,071 PHVS, MAZE, LYEL, KURA, RLAY 13F-HR 15 May 2025, 16:02
Q4 2024 4 $108,796,521 $0 -$17,915,646 -$17,915,646 PHVS, KURA, LYEL, RLAY 13F-HR 14 Feb 2025, 14:28
Q3 2024 5 $153,008,970 +$9,006,580 $0 +$9,006,580 PHVS, KURA, SNDX, LYEL, RLAY 13F-HR 14 Nov 2024, 14:18
Q2 2024 4 $148,849,864 +$4,794,226 -$25,726,570 -$20,932,344 PHVS, KURA, SNDX, LYEL 13F-HR 13 Aug 2024, 14:27
Q1 2024 5 $197,913,329 $0 $0 $0 PHVS, KURA, KNTE, SNDX, LYEL 13F-HR 15 May 2024, 12:28
Q4 2023 5 $197,872,800 +$8,285,746 -$46,772,642 -$38,486,896 PHVS, KURA, KNTE, SNDX, LYEL 13F-HR 13 Feb 2024, 14:04
Q3 2023 7 $180,036,899 $0 -$1,345,325 -$1,345,325 PHVS, CBAY, ACRS, KURA, KNTE 13F-HR 13 Nov 2023, 16:43
Q2 2023 7 $203,401,092 +$7,517,373 -$4,071,398 +$3,445,975 PHVS, LYEL, KNTE, ACRS, KURA 13F-HR 11 Aug 2023, 06:52
Q1 2023 8 $192,724,463 $0 $0 $0 KNTE, PHVS, LYEL, ACRS, KURA 13F-HR 12 May 2023, 09:17
Q4 2022 8 $234,124,533 +$4,708,250 $0 +$4,708,250 KNTE, ACRS, PHVS, LYEL, KURA 13F-HR 13 Feb 2023, 16:49
Q3 2022 8 $310,955,000 +$16,581,000 -$32,637,387 -$16,056,387 KNTE, LYEL, ACRS, KURA, PHVS 13F-HR 14 Nov 2022, 09:28
Q2 2022 8 $371,386,000 $0 -$14,028,300 -$14,028,300 KNTE, LYEL, PHVS, ACRS, KURA 13F-HR 12 Aug 2022, 09:25
Q1 2022 9 $357,448,000 $0 -$15,860,585 -$15,860,585 KNTE, LYEL, PHVS, ACRS, KURA 13F-HR 13 May 2022, 09:07
Q4 2021 9 $486,015,000 $0 -$14,473,000 -$14,473,000 KNTE, LYEL, ACRS, PHVS, QSI 13F-HR 11 Feb 2022, 15:01
Q3 2021 12 $679,115,000 +$11,882,014 -$31,146,000 -$19,263,986 KNTE, LYEL, ACRS, PHVS, QSI 13F-HR 12 Nov 2021, 09:56
Q2 2021 13 $739,796,000 +$272,554,000 -$213,618,081 +$58,935,919 KNTE, LYEL, PHVS, ACRS, QSI 13F-HR 13 Aug 2021, 18:21
Q1 2021 13 $834,839,000 +$157,518,378 -$113,861,808 +$43,656,570 KNTE, PHVS, ACRS, KROS, RLAY 13F-HR 14 May 2021, 19:19
Q4 2020 13 $920,621,000 +$445,616,820 -$39,907,233 +$405,709,587 KNTE, KROS, RLAY, ALXO, NRIX 13F-HR 16 Feb 2021, 08:48
Q3 2020 15 $443,450,000 +$228,868,245 -$42,101,063 +$186,767,182 RLAY, NRIX, KROS, KURA, ALXO 13F-HR 13 Nov 2020, 10:55
Q2 2020 12 $205,283,000 +$128,874,627 -$54,392,767 +$74,481,860 KROS, CYTK, KURA, FULC, PCVX 13F-HR 13 Aug 2020, 10:04
Q1 2020 11 $81,136,000 +$11,983,436 -$120,133,818 -$108,150,382 CYTK, MYOK, FULC, INSM, BHVN Restatement 28 May 2020, 12:58
Q4 2019 14 $231,764,000 +$23,290,319 -$159,684,633 -$136,394,314 AERI, MDCO, INSM, CYTK, FULC 13F-HR 14 Feb 2020, 15:31
Q3 2019 17 $305,570,000 +$49,706,636 -$49,285,359 +$421,277 TPTX, AERI, INSM, MDCO, ASND 13F-HR 13 Nov 2019, 09:05
Q2 2019 20 $347,852,000 +$122,206,579 -$21,904,588 +$100,301,991 TPTX, INSM, ASND, ALEC, CYTK 13F-HR 13 Aug 2019, 10:02
Q1 2019 16 $267,578,000 +$23,468,027 -$68,391,303 -$44,923,276 INSM, CBAY, ASND, BHVN, OPTN 13F-HR 14 May 2019, 10:47
Q4 2018 18 $217,868,000 +$40,687,902 -$54,853,433 -$14,165,531 BHVN, INSM, MYOK, CBAY, IMMU 13F-HR 13 Feb 2019, 17:12
Q3 2018 21 $305,020,000 +$47,213,102 -$10,462,355 +$36,750,747 INSM, MYOK, BHVN, IMMU, ABUS 13F-HR 13 Nov 2018, 14:33
Q2 2018 16 $287,838,000 +$65,292,236 -$43,402,068 +$21,890,168 INSM, BHVN, IMMU, MYOK, CBAY 13F-HR 14 Aug 2018, 16:03
Q1 2018 15 $221,586,000 +$73,191,053 -$8,626,696 +$64,564,357 INSM, ASND, CBAY, BHVN, MYOK 13F-HR 15 May 2018, 09:43
Q4 2017 13 $142,664,000 $0 $0 $0 INSM, ASND, CBAY, IMMU, MYOK 13F-HR 13 Feb 2018, 13:14