Form 4 for SPTX Seaport Therapeutics, Inc.
Accepted 2026-05-04 18:01:22 ET · period of report 2026-04-30 · accession 0001193125-26-204452 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-05-04 18:01 | 2026-05-04 | SPTX | Loebel Antony | Chief Medical Off | C - Cnv Deriv | — | +20.1K | 20.1K | New | — |
| D | 2026-05-04 18:01 | 2026-04-30 | SPTX | Loebel Antony | Chief Medical Off | A - Grant | $0.00 | +63.7K | 63.7K | New | $0 |
| D | 2026-05-04 18:01 | 2026-05-04 | SPTX | Loebel Antony | Chief Medical Off | C - Cnv Deriv | $0.00 | -63.2K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-05-04 | C | A | 20,109 | — | 20,109 | D | — | — | (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. |
| 2 | Derivative | Stock Option (Right to Buy) | 2026-04-30 | A | A | 63,680 | $0.00 | 63,680 | D | $18.00 · — to 2036-04-29 | 63,680 Common Stock | (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. |
| 3 | Derivative | Series B Preferred Stock | 2026-05-04 | C | D | 63,157 | $0.00 | 0 | D | — · — to — | 20,109 Common Stock | (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. (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. (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. |