ALXO (ALX Oncology Holdings Inc. Common Stock)

Insider Trading Activity

Every open-market purchase and sale reported by ALXO 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.

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.

Form 4 Filings
50
most recent
Open-Market Buys
3
code P
Sales
14
code S
Reporting Insiders
16
current holders
ALXO — Recent Form 4 Transactions (latest 2026-08-18)
FiledInsiderRole TypeSharesValue
2026-08-18 Jason Lettmann CHIEF EXECUTIVE OFFICER Sell
2026-08-18 Shelly Wong SVP, FINANCE AND CAO Sell
2026-07-06 Shelly Wong SVP, FINANCE AND CAO Sell
2026-04-17 Jeff E. Knight Chief Dev & Operating Officer A
2026-04-17 Barbara Klencke Chief Medical Officer A
2026-03-23 Shelly Pinto SVP, FINANCE AND CAO Sell
2026-03-23 Jason Lettmann CHIEF EXECUTIVE OFFICER Sell
2026-03-05 Barbara Klencke Chief Medical Officer A
2026-02-20 Shelly Pinto SVP, FINANCE AND CAO Sell
2026-02-19 Jason Lettmann CHIEF EXECUTIVE OFFICER F
2026-02-04 COREY S GOODMAN Director Buy
2026-01-28 Jason Lettmann CHIEF EXECUTIVE OFFICER A
2026-01-28 Harish Shantharam Chief Financial Officer A
2026-01-28 Shelly Pinto SVP, FINANCE AND CAO A
2026-01-21 Rekha Hemrajani Director A
2026-01-21 Alan B. Sandler Director A
2026-01-21 J. Scott Garland Director A
2026-01-21 Daniel J. Curran Director A
2026-01-21 COREY S GOODMAN Director A
2026-01-21 Chris H Takimoto Director A
2026-01-07 Shelly Pinto SVP, FINANCE AND CAO Sell
2025-10-16 Harish Shantharam Chief Financial Officer A
2025-10-16 Shelly Pinto SVP, FINANCE AND CAO A
2025-10-16 Jason Lettmann CHIEF EXECUTIVE OFFICER A
2025-09-19 Barbara Klencke Director A
2025-09-18 Jason Lettmann CHIEF EXECUTIVE OFFICER Buy
2025-08-20 Harish Shantharam Chief Financial Officer Buy
2025-08-19 Jason Lettmann CHIEF EXECUTIVE OFFICER Sell
2025-08-19 Shelly Pinto SVP, FINANCE AND CAO Sell
2025-08-13 Daniel J. Curran Director A
2025-07-08 Shelly Pinto SVP, FINANCE AND CAO Sell
2025-07-01 Shelly Pinto SVP, FINANCE AND CAO Sell
2025-04-15 Harish Shantharam Chief Financial Officer A
2025-04-15 Alan B. Sandler Chief Medical Officer A
2025-04-15 Shelly Pinto SVP, FINANCE AND CAO A
2025-04-15 Jason Lettmann CHIEF EXECUTIVE OFFICER A
2025-03-18 Jason Lettmann CHIEF EXECUTIVE OFFICER A
2025-03-18 Shelly Pinto SVP, FINANCE AND CAO A
2025-02-21 Jaume Pons PRESIDENT & CSO Sell
2025-02-21 Shelly Pinto SVP, FINANCE AND CAO Sell
2025-02-21 Jason Lettmann CHIEF EXECUTIVE OFFICER Sell
2025-01-23 Chris H Takimoto Director A
2025-01-23 Alan B. Sandler Chief Medical Officer A
2025-01-23 Jason Lettmann CHIEF EXECUTIVE OFFICER A
2025-01-23 J. Scott Garland Director A
2025-01-23 COREY S GOODMAN Director A
2025-01-23 Shelly Pinto SVP, FINANCE AND CAO A
2025-01-23 Barbara Klencke Director A
2025-01-23 Rekha Hemrajani Director A
2025-01-23 Harish Shantharam Chief Financial Officer A
ALXO — Current Insider Holders
InsiderRole Shares HeldValue
10%+ Owner 4,066,195
CHIEF EXECUTIVE OFFICER 2,317,848
10%+ Owner 2,097,326
Director 995,000
PRESIDENT & CSO 579,388
CHIEF MEDICAL OFFICER 325,711
10%+ Owner 309,222
10%+ Owner 185,526
CHIEF FINANCIAL OFFICER 121,516
10%+ Owner 120,212
Director 113,287
SVP, FINANCE AND CAO 87,828
Chief Financial Officer 75,000
Director 33,000
Chief Business Officer 11,254
VP Fin & Chief Acct Officer 3,000
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 ALXO quote page; the site-wide leaderboard is on the insider transactions hub.