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Otello Stampacchia

CIK 1361712 · Chief Executive Officer · last filed 2026-06-18

Otello Stampacchia is a Chief Executive Officer who has filed 49 SEC Form 4 insider transactions across 8 companies since 2007. The most recent filing, for IMA, was dated Jun 18, 2026. Across all open-market trades the lifetime net is −$8.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $29.8M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$29.78M

Companies

8

Total Filings

49

Lifetime Open-Market Net

-$8.60M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
IMA Director 455,361 $5.76 $2.62M $8.00M 2 2026-06-18
ImageneBio, Inc. (IKNA) Delisted Director 149,927 $17.16 $2.57M $0 5 2024-06-10
Kronos Bio, Inc. (KRON) Delisted Director 3,818,283 $0.88 $3.36M $8.55M 3 2022-06-29
REPL Director 4,811,245 $5.35 $25.74M -$5.86M 2 2021-11-18
Morphic Holding, Inc. (MORF) Delisted Director 5,209,524 $56.99 $296.89M -$39.44M 9 2021-03-25
Omega Alpha SPAC (OMEG) Delisted Chief Executive Officer 501,000 $10.10 $5.06M $5.01M 1 2021-01-13
GOSS Director 6,899,639 $0.21 $1.42M -$9.57M 2 2019-09-12
MICROMET, INC. (MITI) Delisted Director 45,048 — — $24.72M 25 2010-03-04

Recent Filings

49 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-06-18 IMA Grant (A) — $0 EDGAR
2025-07-30 IMA Mixed +267,935 $8.00M EDGAR
2024-06-10 ImageneBio, Inc. (IKNA) Delisted Grant (A) — $0 EDGAR
2023-06-13 ImageneBio, Inc. (IKNA) Delisted Grant (A) — $0 EDGAR
2022-06-29 Kronos Bio, Inc. (KRON) Delisted Grant (A) — $0 EDGAR
2022-06-13 ImageneBio, Inc. (IKNA) Delisted Grant (A) — $0 EDGAR
2021-12-23 ImageneBio, Inc. (IKNA) Delisted Grant (A) — $0 EDGAR
2021-11-18 REPL Sell (S) −10,376 -$347.6K EDGAR
2021-06-23 Kronos Bio, Inc. (KRON) Delisted Grant (A) — $0 EDGAR
2021-04-01 ImageneBio, Inc. (IKNA) Delisted Mixed +2,249,123 $7.20M EDGAR
Showing 1–10 of 49
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.