Seaport Therapeutics
SPTX
17.93
+0.56
+3.22%
Seaport Therapeutics
US · SPTX
#3277 by market cap
Listed 2026
17.93
+0.56
+3.22%
Live - 5344 symbols - heartbeat 299s ago
· 2026-10-07 20:02
After-hours
17.93
0.00%
- Market cap
- 959.80M
- P/E (TTM)i
- -7.13
- P/Bi
- 2.27
- EPSi
- -1.41
- Div yieldi
- 0.00%
- 52W posi
- 23%
Reader sentiment
Are you bullish or bearish on SPTX?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Accumulating
- The number of reporting institutions increased by 1 in the most recent period (2026/Q3).
- Total institutional ownership rose 0.1 percentage points.
Institutional ownership
- Held by institutions
- 102.15% +0.12pp
- Institutions
- 62 +1
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
DivergingInstitutions added shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two are pointing in different directions.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
VC/PE Fund41.28%
Public Company33.49%
Mutual Fund19.49%
Individual/Insider4.58%
Government Pension Fund3.69%
Hedge Fund3.53%
Sovereign Wealth Fund0.64%
Top holders as of 2026-06-30
PureTech Health plc
31.17% · 16.69M sh
Arch Venture Partners, L.P.
11.76% · 6.29M sh
General Atlantic Service Company, L.P.
11.40% · 6.10M sh
Sofinnova Investments, Inc.
6.66% · 3.56M sh
Third Rock Ventures, LLC
3.85% · 2.06M sh
Canada Pension Plan Investment Board
3.69% · 1.98M sh
J.P. Morgan Asset Management, Inc.
3.33% · 1.79M sh
Foresite Capital Management, LLC
3.32% · 1.78M sh
T. Rowe Price Group, Inc.
2.44% · 1.31M sh
The Goldman Sachs Group, Inc.
2.23% · 1.19M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
40 filings tracked · 19 buys · 0 sells
| Name | Role | Stake |
|---|---|---|
| PureTech Health plc | -- | 31.17% |
| General Atlantic Service Company, L.P. | -- | 11.40% |
| Daphne Zohar | Chief Executive Officer | 2.23% |
| Steven Paul | Founder & Non-Employee Chair of the Board | 1.61% |
| Lana Gladstein | General Counsel | 0.06% |
| Antony Loebel | Chief Medical Officer & President of Clinical Development | 0.04% |
| Denice Torres | Independent Director | 0.03% |
| Robert Hombach | Independent Director | 0.02% |
| Lauren White | Chief Financial Officer | 0.01% |
| Michael Chen | Co-Founder & CSO | 0.01% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-06-21 | Robert Hombach | Independent Director | Open Market Acquisition | +13,000 | $18.14 |
| 2026-05-03 | General Atlantic Service Company, L.P. | -- | Initial Statement of Beneficial | 0 | -- |
| 2026-05-03 | Steven Paul | Founder & Non-Employee Chair of the Board | Derivative Exercise and Retained | +67,031 | -- |
| 2026-05-03 | PureTech Health plc | -- | Derivative Exercise and Retained | +16,382,534 | -- |
| 2026-05-03 | Antony Loebel | Chief Medical Officer & President of Clinical Development | Derivative Exercise and Retained | +20,109 | -- |
| 2026-05-03 | Denice Torres | Independent Director | Derivative Exercise and Retained | +13,406 | -- |
| 2026-05-03 | Lana Gladstein | General Counsel | Derivative Exercise and Retained | +33,515 | -- |
| 2026-05-03 | Lauren White | Chief Financial Officer | Derivative Exercise and Retained | +6,702 | -- |
| 2026-05-03 | Michael Chen | Co-Founder & CSO | Derivative Exercise and Retained | +3,351 | -- |
| 2026-04-29 | Sandra Peterson | Independent Director | Other Derivative Acquisition | +12,258 | $18.00 |
| 2026-04-29 | Sandra Peterson | Independent Director | Initial Statement of Beneficial | 0 | -- |
| 2026-04-29 | Sharon Mates | Independent Director | Other Derivative Acquisition | +49,033 | $18.00 |
| 2026-04-29 | Steven Paul | Founder & Non-Employee Chair of the Board | Other Derivative Acquisition | +1,003,450 | $18.00 |
| 2026-04-29 | Steven Paul | Founder & Non-Employee Chair of the Board | Initial Statement of Beneficial | 0 | -- |
| 2026-04-29 | PureTech Health plc | -- | Initial Statement of Beneficial | 0 | -- |
| 2026-04-29 | Daphne Zohar | Chief Executive Officer | Other Derivative Acquisition | +1,758,599 | $18.00 |
| 2026-04-29 | Daphne Zohar | Chief Executive Officer | Initial Statement of Beneficial | 0 | -- |
| 2026-04-29 | Robert Hombach | Independent Director | Other Derivative Acquisition | +12,258 | $18.00 |
| 2026-04-29 | Robert Hombach | Independent Director | Initial Statement of Beneficial | 0 | -- |
| 2026-04-29 | David Wheadon | Independent Director | Other Derivative Acquisition | +12,258 | $18.00 |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-07 20:02:48 · For reference only, not investment advice and not tailored to your situation.