# SEAPORT THERAPEUTICS INC COMMON STOCK

SEAPORT THERAPEUTICS INC COMMON STOCK is a security (CUSIP 81221K108) tracked across SEC portfolio filings. 11 institutional managers reported $50.6M on Form 13F as of 2026-06-30; 3 registered fund positions totaling $12.2M via N-PORT as of 2026-05-31.

## Summary

- Issuer: SEAPORT THERAPEUTICS INC
- Class: COMMON STOCK
- CUSIP: 81221K108
- Asset category: EC
- 13F holders: 11
- 13F value: $50.6M
- 13F period: 2026-06-30
- N-PORT fund positions: 3
- N-PORT value: $12.2M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [JENNISON ASSOCIATES LLC](https://search.stillhousedata.com/firm/107959) | NEW YORK, NY | $23.5M | 1,079,669 |
| PRINCIPAL FINANCIAL GROUP INC | DES MOINES, IA | $9.0M | 414,672 |
| Aberdeen Group plc | EDINBURGH, X0 | $6.7M | 310,355 |
| BlackRock, Inc. | New York, NY | $5.0M | 229,863 |
| [Pier Capital, LLC](https://search.stillhousedata.com/firm/131212) | STAMFORD, CT | $3.7M | 169,985 |
| [ALPS ADVISORS INC](https://search.stillhousedata.com/firm/134340) | Denver, CO | $1.2M | 54,328 |
| TD Asset Management Inc | Toronto, A6 | $1.0M | 47,944 |
| [HighTower Advisors, LLC](https://search.stillhousedata.com/firm/145323) | CHICAGO, IL | $362K | 16,666 |
| CITIGROUP INC | NEW YORK, NY | $53K | 2,454 |
| [ASSETMARK, INC](https://search.stillhousedata.com/firm/109018) | CONCORD, CA | $31K | 1,431 |
| GSA CAPITAL PARTNERS LLP | LONDON, X0 | $721 | 33,178 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [PGIM Jennison Health Sciences Fund](https://search.stillhousedata.com/fund/S000004380) | Prudential Sector Funds, Inc. | $8.0M | 57.48% |
| [Fidelity Growth Company Fund](https://search.stillhousedata.com/fund/S000007119) | Fidelity Mt. Vernon Street Trust | $4.1M | 0.41% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $144K | 0.08% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/81221K108.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.