Form 4 for SIGA SIGA TECHNOLOGIES INC
Accepted 2026-01-28 00:00:00 ET · period of report 2026-01-27 · accession 0001193125-26-027202 · 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 | 2026-01-28 | 2026-01-27 | SIGA | Nguyen Diem | CEO, Dir | M - OptEx | $0.00 | +55.9K | 123.6K | +83% | $0 |
| D | 2026-01-28 | 2026-01-27 | SIGA | Nguyen Diem | CEO, Dir | F - Tax | $6.82 | -22.8K | 100.8K | -18% | -$155.5K |
| D | 2026-01-28 | 2026-01-27 | SIGA | Nguyen Diem | CEO, Dir | M - OptEx | $0.00 | -55.9K | 55.9K | -50% | $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, par value $.0001 per share | 2026-01-27 | M | A | 55,902 | $0.00 | 123,555 | D | — | — | (F1) Represents the acquisition of Common Stock from the vesting of one-third of the restricted stock units ("RSUs") granted on January 27, 2024. |
| 2 | Common | Common Stock, par value $.0001 per share | 2026-01-27 | F | D | 22,804 | $6.82 | 100,751 | D | — | — | (F2) Represents the withholding by the Issuer of shares of Common Stock (based on $6.82 per share, the closing stock price on January 27, 2026) to satisfy tax withholding obligations associated with the vesting of RSUs and the consequent issuance of Common Stock. |
| 3 | Derivative | Restricted Stock Units | 2026-01-27 | M | D | 55,902 | $0.00 | 55,903 | D | — · — to — | 55,902 Common Stock, par value $.0001 per share | (F3) RSUs represent contingent rights to receive Common Stock on a one-for-one basis. The RSUs vest over three years, one-third on each of the first three anniversaries of the date of grant. |