Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Seaport Therapeutics, Inc.SPTX · Entity 4799 | Chief Scientific Officer | April 30, 2026 | May 04, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Seaport Therapeutics, Inc.
Report date April 30, 2026 · Filed May 04, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 3,351 |
Reported balance
After 2026-05-04 transaction · row 1
1 source rowRow 1 · 2026-05-04 · Conversion · Acquired 3,351 · Balance 3,351 F1: Each share of Series B Preferred Stock (the "Preferred Stock") was convertible into Common Stock of the Issuer on a one-for-3.1407 basis at the option of the holder, and automatically converted upon the closing of the Issuer's initial public offering without payment of further consideration. The Preferred Stock had no expiration date. |
| Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $18.00 · Expires 2036-04-29 | Direct | 63,680 |
Reported balance
After 2026-04-30 transaction · row 2
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 2 · 2026-04-30 · Grant · Acquired 63,680 · Balance 63,680 F2: The shares underlying this option shall vest in forty-eight (48) equal monthly installments following April 30, 2026, subject to the Reporting Person's continued service on each such vesting date. |
| Series B Preferred StockSEC Table II · derivative / convertible security | Direct | 0 |
Reported balance
After 2026-05-04 transaction · row 3
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 3 · 2026-05-04 · Conversion · Disposed 10,526 · Balance 0 F1: Each share of Series B Preferred Stock (the "Preferred Stock") was convertible into Common Stock of the Issuer on a one-for-3.1407 basis at the option of the holder, and automatically converted upon the closing of the Issuer's initial public offering without payment of further consideration. The Preferred Stock had no expiration date. |
Filing footnotes · ownership attribution and instrument terms
F1: Each share of Series B Preferred Stock (the "Preferred Stock") was convertible into Common Stock of the Issuer on a one-for-3.1407 basis at the option of the holder, and automatically converted upon the closing of the Issuer's initial public offering without payment of further consideration. The Preferred Stock had no expiration date.
F2: The shares underlying this option shall vest in forty-eight (48) equal monthly installments following April 30, 2026, subject to the Reporting Person's continued service on each such vesting date.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| May 04, 2026 Filed May 4, 2026 22:07 UTC | Seaport Therapeutics, Inc. SPTX · Entity 4799 | ConversionSeries B Preferred Stock · Derivative | 10,526 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-204471 · ownership.xml · derivative · entry 3 Chen Michael Cunyuan · CIK 0002127529 · Chief Scientific Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 3,351 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each share of Series B Preferred Stock (the "Preferred Stock") was convertible into Common Stock of the Issuer on a one-for-3.1407 basis at the option of the holder, and automatically converted upon the closing of the Issuer's initial public offering without payment of further consideration. The Preferred Stock had no expiration date. F1 · derivative.exercise_date: Each share of Series B Preferred Stock (the "Preferred Stock") was convertible into Common Stock of the Issuer on a one-for-3.1407 basis at the option of the holder, and automatically converted upon the closing of the Issuer's initial public offering without payment of further consideration. The Preferred Stock had no expiration date. F1 · derivative.expiration_date: Each share of Series B Preferred Stock (the "Preferred Stock") was convertible into Common Stock of the Issuer on a one-for-3.1407 basis at the option of the holder, and automatically converted upon the closing of the Issuer's initial public offering without payment of further consideration. The Preferred Stock had no expiration date. Read SEC document |
| May 04, 2026 Filed May 4, 2026 22:07 UTC | Seaport Therapeutics, Inc. SPTX · Entity 4799 | ConversionCommon Stock | 3,351 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001193125-26-204471 · ownership.xml · nonDerivative · entry 1 Chen Michael Cunyuan · CIK 0002127529 · Chief Scientific Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,351 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Each share of Series B Preferred Stock (the "Preferred Stock") was convertible into Common Stock of the Issuer on a one-for-3.1407 basis at the option of the holder, and automatically converted upon the closing of the Issuer's initial public offering without payment of further consideration. The Preferred Stock had no expiration date. Read SEC document |
| April 30, 2026 Filed May 4, 2026 22:07 UTC | Seaport Therapeutics, Inc. SPTX · Entity 4799 | GrantStock Option (Right to Buy) · Derivative | 63,680 | $0.00 Strike: $18.00 | $0.00 |
DisclosureSEC source: 0001193125-26-204471 · ownership.xml · derivative · entry 2 Chen Michael Cunyuan · CIK 0002127529 · Chief Scientific Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 63,680 Underlying: Common Stock · 63,680 shares Expires 2036-04-29 F2 · derivative.exercise_date: The shares underlying this option shall vest in forty-eight (48) equal monthly installments following April 30, 2026, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.