In the last 12 months, insiders at Seaport Therapeutics, Inc. ($SPTX) filed 34 transactions with the SEC: 1 open-market purchases totaling $19,800,000 and 0 sales totaling $0. Net insider sentiment: net buying.
Seaport Therapeutics, Inc. operates in the Pharmaceutical preparations industry (Life sciences sector).
Most Active Insiders
- ARCH Venture Partners XII, LLC (Not found) — 5 transactions totaling $19,800,000
- Mates Sharon (Not found) — 1 transaction totaling $0
- Loebel Antony (Chief Medical Officer) — 3 transactions totaling $0
- Zohar Daphne (Chief Executive Officer) — 2 transactions totaling $0
- Torres Denice (Not found) — 3 transactions totaling $0
View all SEC Filings for Seaport Therapeutics, Inc. (SPTX).
Set Up your own filters →Recent Insider Transactions
| Transaction Date | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|
| April 30, 2026 | Zohar Daphne | Chief Executive Officer | A | Stock Option (Right to Buy) | 271813 | $0.00 | 271,813.0000 | 0 | 9999.99% | 0.00% |
| April 30, 2026 | Zohar Daphne | Chief Executive Officer | A | Stock Option (Right to Buy) | 1486786 | $0.00 | 1,486,786.0000 | 0 | 9999.99% | 0.00% |
| May 4, 2026 | HEALY JAMES | Not found | C | Common Stock | 1927159 | $0.00 | 1,927,159.0000 | 0 | 9999.99% | 0.00% |
| May 4, 2026 | HEALY JAMES | Not found | C | Common Stock | 804379 | $0.00 | 2,731,538.0000 | 0 | 41.74% | 0.00% |
| May 4, 2026 | HEALY JAMES | Not found | C | Series A-2 Preferred Stock | 6052631 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 4, 2026 | HEALY JAMES | Not found | C | Series B Preferred Stock | 2526315 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 4, 2026 | White Lauren | Chief Financial Officer | C | Common Stock | 6702 | $0.00 | 6,702.0000 | 0 | 9999.99% | 0.00% |
| April 30, 2026 | White Lauren | Chief Financial Officer | A | Stock Option (Right to Buy) | 63680 | $0.00 | 63,680.0000 | 0 | 9999.99% | 0.00% |
| May 4, 2026 | White Lauren | Chief Financial Officer | C | Series B Preferred Stock | 21052 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| April 30, 2026 | Wheadon David E. | Not found | A | Stock Option (Right to Buy) | 12258 | $0.00 | 12,258.0000 | 0 | 9999.99% | 0.00% |
| April 30, 2026 | PETERSON SANDRA E | Not found | A | Stock Option (Right to Buy) | 12258 | $0.00 | 12,258.0000 | 0 | 9999.99% | 0.00% |
| May 4, 2026 | Gladstein Lana | General Counsel | C | Common Stock | 33515 | $0.00 | 33,515.0000 | 0 | 9999.99% | 0.00% |
| April 30, 2026 | Gladstein Lana | General Counsel | A | Stock Option (Right to Buy) | 63680 | $0.00 | 63,680.0000 | 0 | 9999.99% | 0.00% |
| May 4, 2026 | Gladstein Lana | General Counsel | C | Series B Preferred Stock | 105263 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 4, 2026 | Chen Michael Cunyuan | Chief Scientific Officer | C | Common Stock | 3351 | $0.00 | 3,351.0000 | 0 | 9999.99% | 0.00% |
| April 30, 2026 | Chen Michael Cunyuan | Chief Scientific Officer | A | Stock Option (Right to Buy) | 63680 | $0.00 | 63,680.0000 | 0 | 9999.99% | 0.00% |
| May 4, 2026 | Chen Michael Cunyuan | Chief Scientific Officer | C | Series B Preferred Stock | 10526 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 4, 2026 | Torres Denice | Not found | C | Common Stock | 13406 | $0.00 | 13,406.0000 | 0 | 9999.99% | 0.00% |
| April 30, 2026 | Torres Denice | Not found | A | Stock Option (Right to Buy) | 12258 | $0.00 | 12,258.0000 | 0 | 9999.99% | 0.00% |
| May 4, 2026 | Torres Denice | Not found | C | Series B Preferred Stock | 42105 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 4, 2026 | PAUL STEVEN M | Not found | C | Common Stock | 67031 | $0.00 | 863,031.0000 | 0 | 8.42% | 0.00% |
| April 30, 2026 | PAUL STEVEN M | Not found | A | Stock Option (Right to Buy) | 12258 | $0.00 | 12,258.0000 | 0 | 9999.99% | 0.00% |
| April 30, 2026 | PAUL STEVEN M | Not found | A | Stock Option (Right to Buy) | 991192 | $0.00 | 991,192.0000 | 0 | 9999.99% | 0.00% |
| May 4, 2026 | PAUL STEVEN M | Not found | C | Series B Preferred Stock | 210526 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 4, 2026 | ARCH Venture Partners XII, LLC | Not found | C | Common Stock | 2513686 | $0.00 | 2,513,686.0000 | 0 | 9999.99% | 0.00% |
| May 4, 2026 | ARCH Venture Partners XII, LLC | Not found | C | Common Stock | 2681265 | $0.00 | 5,194,951.0000 | 0 | 106.67% | 0.00% |
| May 4, 2026 | ARCH Venture Partners XII, LLC | Not found | P | Common Stock | 1100000 | $18.00 | 6,294,951.0000 | 0 | 21.17% | 0.00% |
| May 4, 2026 | ARCH Venture Partners XII, LLC | Not found | C | Series A-2 Preferred Stock | 2513686 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 4, 2026 | ARCH Venture Partners XII, LLC | Not found | C | Series B Preferred Stock | 2681265 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| April 30, 2026 | HOMBACH ROBERT J. | Not found | A | Stock Option (Right to Buy) | 12258 | $0.00 | 12,258.0000 | 0 | 9999.99% | 0.00% |
| May 4, 2026 | Loebel Antony | Chief Medical Officer | C | Common Stock | 20109 | $0.00 | 20,109.0000 | 0 | 9999.99% | 0.00% |
| April 30, 2026 | Loebel Antony | Chief Medical Officer | A | Stock Option (Right to Buy) | 63680 | $0.00 | 63,680.0000 | 0 | 9999.99% | 0.00% |
| May 4, 2026 | Loebel Antony | Chief Medical Officer | C | Series B Preferred Stock | 63157 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| April 30, 2026 | Mates Sharon | Not found | A | Stock Option (Right to Buy) | 49033 | $0.00 | 49,033.0000 | 0 | 9999.99% | 0.00% |