InsiderTrades

Form 4 for ETRA Electra Therapeutics, Inc.

Accepted 2026-09-21 18:19:01 ET · period of report 2026-09-21 · accession 0001817449-26-000009 · 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 2026-09-21 18:19 2026-09-21 ETRA Stagliano Nancy Dir C - Cnv Deriv — +255.6K 255.6K New —
D 2026-09-21 18:19 2026-09-21 ETRA Stagliano Nancy Dir C - Cnv Deriv — -255.6K 0 -100% —

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-09-21 C A 255,635 — 255,635 D — — (F1) Each share of Series A Convertible Preferred Stock (the "Preferred Stock") converted automatically into 1 share of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock had no expiration date.
2 Derivative Series A Convertible Preferred Stock 2026-09-21 C D 255,635 — 0 D — · — to — 255,635 Common Stock (F1) Each share of Series A Convertible Preferred Stock (the "Preferred Stock") converted automatically into 1 share of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock had no expiration date. (F1) Each share of Series A Convertible Preferred Stock (the "Preferred Stock") converted automatically into 1 share of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock had no expiration date. (F1) Each share of Series A Convertible Preferred Stock (the "Preferred Stock") converted automatically into 1 share of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock had no expiration date. (F1) Each share of Series A Convertible Preferred Stock (the "Preferred Stock") converted automatically into 1 share of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock had no expiration date.