Septerna Inc

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Septerna Inc
TickerSEPN
CIK #0001984086
CUSIP81734D104
SectorLife Sciences - Pharmaceutical Preparations
Address250 East Grand Avenue, Suite 65, South San Francisco, CA 94080
Source [EDGAR]
CIK Filing 2011 - 2025
[0001984086] 10-K
[0001984086] 10-Q
[0001984086] 3
[0001984086] 4
[0001984086] 8-K
[0001984086] D
[0001984086] SC 13D
[0001984086] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Driehaus Capital Management LLC Septerna Inc [2025-02-14] 0.0
Third Rock Ventures V LP Septerna Inc [2025-02-13] 0.0
Samsara Biocapital LP Septerna Inc [2024-11-04] 6.2
RA Capital Management LP Septerna Inc [2024-11-04] 15.8
Biotechnology Value Fund L P Septerna Inc [2024-11-01] 2.9
Form 3/4/5 Filer 2011 - 2025
Septerna, Inc.
Klein Uwe
Shaikhly Samira
Bhatt Elizabeth
Kim Jae B.
Labrucherie Gil M
Long Daniel D.
Finer Jeffrey
Ezekowitz Alan
RA Capital Management LP
Kolchinsky Peter
RA Capital Healthcare Fund LP
RA Capital Nexus Fund III, L.P.
Shah Rajeev M.
Sharp Shalini
Tong Jeffrey K
Coulie Bernard
Simson Jake
Bassan Abraham
TRV GP VI LLC
Third Rock Ventures GP VI, L.P.
Third Rock Ventures V, L.P.
TRV GP V LLC
Third Rock Ventures VI, L.P.
Third Rock Ventures GP V, LP
Xiao Ran
Form 13F Holdings
Firm Period DFND Voting Shares
RA Capital Management LP [2025-06-30] SOLE 6,995,858 6,995,858
TRV GP V LLC [2025-06-30] SOLE 6,215,591 6,215,591
Driehaus Capital Management LLC [2025-06-30] SOLE 4,020,525 4,680,431
BVF Inc/IL [2025-06-30] DFND 0 4,396,124
TRV GP VI LLC [2025-06-30] SOLE 4,211,659 4,211,659
Samsara Biocapital LLC [2025-06-30] SOLE 3,149,128 3,149,128
Siren, L.L.C. [2025-06-30] DFND 2,202,514 2,202,514
Goldman Sachs Group Inc [2025-06-30] DFND 1,416,314 1,416,314
Vanguard Group Inc [2025-06-30] SOLE 0 1,398,393
BlackRock, Inc. [2025-06-30] SOLE 1,349,290 1,390,800
Avoro Capital Advisors LLC [2025-06-30] SOLE 1,237,500 1,237,500
Adar1 Capital Management LLC [2025-06-30] SOLE 847,227 847,227
Susquehanna International Group LLP [2025-06-30] OTR 166,506 722,206
Checkpoint Capital LP [2025-06-30] SOLE 586,473 586,473
SIO Capital Management LLC [2025-06-30] SOLE 584,435 584,435
Casdin Capital LLC [2025-06-30] SOLE 553,268 553,268
Perceptive Advisors LLC [2025-06-30] SOLE 541,450 541,450
VR Adviser LLC [2025-06-30] SOLE 540,453 540,453
Geode Capital Management LLC [2025-06-30] DFND 487,956 487,956
Jane Street Group LLC [2025-06-30] DFND 448,300 448,300
State Street Corp [2025-06-30] DFND 345,292 369,992
Catalio Capital Management LP [2025-06-30] SOLE 294,360 294,360
Woodline Partners LP [2025-06-30] SOLE 282,585 282,585
Universal- Beteiligungs- und Servicegesellschaft mbH [2025-06-30] DFND 222,702 222,702
Charles Schwab Investment Management Inc [2025-06-30] SOLE 154,781 154,781
Northern Trust Corp [2025-06-30] DFND 150,983 150,983
Citadel Advisors LLC [2025-06-30] DFND 130,274 130,274
Deep Track Capital LP [2025-06-30] SOLE 121,716 121,716
Logos Global Management LP [2025-06-30] SOLE 109,202 109,202
Bank of America Corp /DE/ [2025-06-30] DFND 4,142 99,213
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