BOSTON, MA
SEAPORT THERAPEUTICS, INC.SPTX— Latest position per institution from SEC 13F filings
15
Institutional holders
35.15M
Total shares held
736.43M
Estimated value
1.76M
Avg. position size
ARCH VENTURE MANAGEMENT, LLC
CIK 1274403
Shares
6.29M
Value
136.60M
Filed
Jun 30, 2026
GENERAL ATLANTIC, L.P.
CIK 1017645
Shares
6.10M
Value
132.53M
Filed
Jun 30, 2026
SOFINNOVA INVESTMENTS, INC.
CIK 1631134
Shares
3.56M
Value
77.43M
Filed
Jun 30, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
2.18M
Value
47.32M
Filed
Jun 30, 2026
TRV GP VI, LLC
CIK 1990716
Shares
2.06M
Value
44.77M
Filed
Jun 30, 2026
CANADA PENSION PLAN INVESTMENT BOARD
CIK 1283718
Shares
1.98M
Value
42.91M
Filed
Jun 30, 2026
JPMORGAN CHASE & CO
CIK 19617
Shares
1.82M
Value
40.89M
Filed
Jun 30, 2026
FORESITE CAPITAL MANAGEMENT VI LLC
CIK 2013341
Shares
1.78M
Value
38.65M
Filed
Jun 30, 2026
PRICE T ROWE ASSOCIATES INC /MD/
CIK 80255
Shares
1.31M
Value
28.42K
Filed
Jun 30, 2026
FMR LLC
CIK 315066
Shares
1.19M
Value
25.74M
Filed
Jun 30, 2026
BELLEVUE GROUP AG
CIK 1674546
Shares
1.10M
Value
23.89M
Filed
Jun 30, 2026
SIREN, L.L.C.
CIK 2005245
Shares
1.10M
Value
23.79M
Filed
Jun 30, 2026
JENNISON ASSOCIATES LLC
CIK 53417
Shares
1.08M
Value
23.45M
Filed
Jun 30, 2026
RA CAPITAL MANAGEMENT, L.P.
CIK 1346824
Shares
700K
Value
15.20M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
599.22K
Value
13.01M
Filed
Jun 30, 2026
WOODLINE PARTNERS LP
CIK 1784547
Shares
586.35K
Value
12.74M
Filed
Jun 30, 2026
BRAIDWELL LP
CIK 1920938
Shares
500K
Value
10.86M
Filed
Jun 30, 2026
PERCEPTIVE ADVISORS LLC
CIK 1224962
Shares
500K
Value
10.86M
Filed
Jun 30, 2026
PRINCIPAL FINANCIAL GROUP INC
CIK 1126328
Shares
414.67K
Value
9.01M
Filed
Jun 30, 2026
ABERDEEN GROUP PLC
CIK 1716774
Shares
310.36K
Value
6.74M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | ARCH VENTURE MANAGEMENT, LLC | 1274403 | 6.29M | 136.60M | Jun 30, 2026 |
| 2 | GENERAL ATLANTIC, L.P. | 1017645 | 6.10M | 132.53M | Jun 30, 2026 |
| 3 | SOFINNOVA INVESTMENTS, INC. | 1631134 | 3.56M | 77.43M | Jun 30, 2026 |
| 4 | GOLDMAN SACHS GROUP INC | 886982 | 2.18M | 47.32M | Jun 30, 2026 |
| 5 | TRV GP VI, LLC | 1990716 | 2.06M | 44.77M | Jun 30, 2026 |
| 6 | CANADA PENSION PLAN INVESTMENT BOARD | 1283718 | 1.98M | 42.91M | Jun 30, 2026 |
| 7 | JPMORGAN CHASE & CO | 19617 | 1.82M | 40.89M | Jun 30, 2026 |
| 8 | FORESITE CAPITAL MANAGEMENT VI LLC | 2013341 | 1.78M | 38.65M | Jun 30, 2026 |
| 9 | PRICE T ROWE ASSOCIATES INC /MD/ | 80255 | 1.31M | 28.42K | Jun 30, 2026 |
| 10 | FMR LLC | 315066 | 1.19M | 25.74M | Jun 30, 2026 |
| 11 | BELLEVUE GROUP AG | 1674546 | 1.10M | 23.89M | Jun 30, 2026 |
| 12 | SIREN, L.L.C. | 2005245 | 1.10M | 23.79M | Jun 30, 2026 |
| 13 | JENNISON ASSOCIATES LLC | 53417 | 1.08M | 23.45M | Jun 30, 2026 |
| 14 | RA CAPITAL MANAGEMENT, L.P. | 1346824 | 700K | 15.20M | Jun 30, 2026 |
| 15 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 599.22K | 13.01M | Jun 30, 2026 |
| 16 | WOODLINE PARTNERS LP | 1784547 | 586.35K | 12.74M | Jun 30, 2026 |
| 17 | BRAIDWELL LP | 1920938 | 500K | 10.86M | Jun 30, 2026 |
| 18 | PERCEPTIVE ADVISORS LLC | 1224962 | 500K | 10.86M | Jun 30, 2026 |
| 19 | PRINCIPAL FINANCIAL GROUP INC | 1126328 | 414.67K | 9.01M | Jun 30, 2026 |
| 20 | ABERDEEN GROUP PLC | 1716774 | 310.36K | 6.74M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.