ALLO · Insider Trading

Allogene Therapeutics, Inc. Common Stock

Every open-market purchase and sale reported by ALLO officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
0
code P
Sales
26
code S
Reporting Insiders
14
current holders
ALLO — Recent Form 4 Transactions (latest 2026-10-23)
FiledInsiderRole TypeSharesValue
2026-10-23 Geoffrey M. Parker CHIEF FINANCIAL OFFICER Sell −36,342 −$48.70K
2026-08-25 Earl Martin Douglas SVP, General Counsel Sell −29,697 −$62.96K
2026-07-06 Zachary Roberts President and CEO A +610,720 deriv. —
2026-06-23 Vicki L Sato Director A +95,400 deriv. —
2026-06-23 Franz B Humer Director A +95,400 deriv. —
2026-06-23 Stephen Mayo Director A +144,400 deriv. —
2026-06-23 Joshua A Kazam Director M +47,700 —
2026-06-23 Elizabeth A. Barrett Director A +95,400 deriv. —
2026-06-23 Deborah M. Messemer Director A +95,400 deriv. —
2026-06-23 Owen N. Witte Director A +95,400 deriv. —
2026-04-23 Annie Yoshiyama SVP, Finance Sell −9,586 −$22.14K
2026-04-02 Benjamin Machinas Beneski SVP, Chief Technical Officer Sell −2,867 −$7.17K
2026-03-18 Benjamin Machinas Beneski SVP, Chief Technical Officer Sell −4,835 −$11.94K
2026-03-18 David D Chang President and CEO Sell −47,763 −$117.97K
2026-03-04 Benjamin Machinas Beneski SVP, Chief Technical Officer Sell −7,132 −$18.54K
2026-02-04 Geoffrey M. Parker CHIEF FINANCIAL OFFICER Sell −24,001 −$42.24K
2026-02-04 Zachary Roberts EVP of R&D Sell −35,700 −$63.19K
2026-02-04 Annie Yoshiyama SVP, Finance Sell −4,167 −$7.17K
2026-02-04 Benjamin Machinas Beneski SVP, Chief Technical Officer Sell −7,549 −$13.06K
2026-02-04 David D Chang President and CEO Sell −95,269 −$171.48K
2026-02-04 Arie Belldegrun Director A — —
2026-02-04 Earl Martin Douglas SVP, General Counsel Sell −22,900 −$40.30K
2026-01-23 Zachary Roberts EVP of R&D Sell −26,269 −$40.98K
2025-12-22 Joshua A Kazam Director M +47,700 —
2025-11-19 Benjamin Machinas Beneski SVP, Chief Technical Officer Sell −786 −$959
2025-10-23 Geoffrey M. Parker CHIEF FINANCIAL OFFICER Sell −36,744 −$46.17K
2025-06-23 Stephen Mayo Director A +95,400 deriv. —
2025-06-23 Elizabeth A. Barrett Director A +95,400 deriv. —
2025-06-23 Owen N. Witte Director A +95,400 deriv. —
2025-06-23 Vicki L Sato Director A +144,400 deriv. —
2025-06-23 Deborah M. Messemer Director A +95,400 deriv. —
2025-06-23 Joshua A Kazam Director A +94,500 deriv. —
2025-06-23 Franz B Humer Director A +95,400 deriv. —
2025-06-12 Deborah M. Messemer Director Sell −36,885 −$52.38K
2025-04-23 Annie Yoshiyama SVP, Finance Sell −9,601 −$13.54K
2025-03-18 David D Chang President and CEO Sell −46,668 −$91.47K
2025-03-18 Benjamin Machinas Beneski SVP, Chief Technical Officer Sell −5,488 −$10.84K
2025-03-05 Benjamin Machinas Beneski SVP, Chief Technical Officer A +31,755 —
2025-02-20 Deborah M. Messemer Director Sell −13,313 −$32.35K
2025-02-05 Timothy L. Moore Chief Technical Officer Sell −14,746 −$25.22K
2025-02-05 Geoffrey M. Parker CHIEF FINANCIAL OFFICER Sell −4,361 −$7.54K
2025-02-05 Zachary Roberts EVP of R&D Sell −18,832 −$32.01K
2025-02-05 Earl Martin Douglas SVP, General Counsel Sell −6,404 −$10.95K
2025-02-05 David D Chang President and CEO Sell −46,003 −$77.29K
2025-01-28 Geoffrey M. Parker CHIEF FINANCIAL OFFICER A +173,913 —
2025-01-28 Annie Yoshiyama SVP, Finance A +36,232 —
2025-01-28 Zachary Roberts EVP of R&D A +173,913 —
2025-01-28 Earl Martin Douglas SVP, General Counsel A +144,928 —
2025-01-28 David D Chang President and CEO A +552,174 —
2025-01-28 Arie Belldegrun Director A +369,957 —
ALLO — Current Insider Holders
InsiderRole Shares HeldValue
David D Chang President and CEO 6,006,643 $7.27M
Arie Belldegrun Director 4,034,979 $4.88M
Geoffrey M. Parker CHIEF FINANCIAL OFFICER 1,045,877 $1.27M
Zachary Roberts President and CEO 581,166 $703.21K
Earl Martin Douglas SVP, General Counsel 488,267 $590.80K
Joshua A Kazam Director 398,463 $482.14K
Franz B Humer Director 307,507 $372.08K
Owen N. Witte Director 292,832 $354.33K
Timothy L. Moore Chief Technical Officer 250,713 $303.36K
Benjamin Machinas Beneski SVP, Chief Technical Officer 195,338 $236.36K
Vicki L Sato Director 162,575 $196.72K
Annie Yoshiyama SVP, Finance 124,517 $150.67K
Deborah M. Messemer Director 113,966 $137.90K
Stephen Mayo Director 25,328 $30.65K
ALLO Insider Trading FAQ
Who are the insiders at ALLO?
14 officers, directors and 10%+ beneficial owners currently report holdings in ALLO via SEC Form 4.
Are ALLO insiders buying or selling?
Across the 50 most recent Form 4 filings for ALLO, 0 were open-market purchases (code P) and 26 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is ALLO insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent ALLO filing is dated 2026-10-23.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the ALLO quote page; the site-wide leaderboard is on the insider transactions hub.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.