ABCL · Insider Trading

AbCellera Biologics Inc. Common Shares

Every open-market purchase and sale reported by ABCL 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
15
code P
Sales
0
code S
Reporting Insiders
8
current holders
ABCL — Recent Form 4 Transactions (latest 2026-08-24)
FiledInsiderRole TypeSharesValue
2026-08-24 Michael R Hayden Director Buy +53,613 +$570.44K
2026-08-18 John S. Montalbano Director Buy +10,000 +$110.30K
2026-08-14 Michael R Hayden Director Buy +46,387 +$481.03K
2026-08-14 Andrew Booth Chief Financial Officer Buy +37,200 +$383.90K
2026-08-13 Michael R Hayden Director G −50,000 —
2026-07-06 Lynn Seely Director A +152,207 deriv. —
2026-07-06 Victor Sandor Director A +152,207 deriv. —
2026-06-12 Michael R Hayden Director A +111,701 deriv. —
2026-06-12 Stephen Quake Director A +111,701 deriv. —
2026-06-12 John S. Montalbano Director A +111,701 deriv. —
2026-06-03 Andrew Booth Chief Financial Officer M +250,000 +$47.50K
2026-05-18 John S. Montalbano Director Buy +20,000 +$95.40K
2026-03-02 Thermopylae Holdings Ltd. 10%+ Owner Buy +38,000 +$130.72K
2026-02-27 Thermopylae Holdings Ltd. 10%+ Owner Buy +177,457 +$580.28K
2026-02-27 Andrew Booth Chief Financial Officer Buy +42,600 +$145.69K
2026-01-05 Veronique Lecault Chief Technology Officer A +539,265 deriv. —
2026-01-05 Andrew Booth Chief Financial Officer A +808,898 deriv. —
2026-01-05 Tryn Stimart Chief Legal Officer A +539,265 deriv. —
2026-01-05 Carl L. G. Hansen Chief Executive Officer A +2,106,505 deriv. —
2025-12-19 Stephen Quake Director A +194,932 deriv. —
2025-12-19 Thermopylae Holdings Ltd. 10%+ Owner G −225,000 —
2025-11-26 John S. Montalbano Director Buy +50,000 +$178.46K
2025-07-01 Michael R Hayden Director A +238,864 deriv. —
2025-06-16 John S. Montalbano Director A +238,864 deriv. —
2025-06-16 Andrew Lo Director A +238,864 deriv. —
2025-03-11 Thermopylae Holdings Ltd. 10%+ Owner Buy +343,631 +$742.24K
2025-03-10 John S. Montalbano Director Buy +25,000 +$57.50K
2025-03-07 John S. Montalbano Director Buy +60,000 +$140.57K
2025-01-03 Andrew Booth Chief Financial Officer A +1,352,054 deriv. —
2025-01-03 Tryn Stimart Chief Legal Officer A +832,033 deriv. —
2025-01-03 Veronique Lecault Chief Operating Officer A +832,033 deriv. —
2025-01-03 Carl L. G. Hansen Chief Executive Officer A +2,730,109 deriv. —
2024-12-05 Thermopylae Holdings Ltd. 10%+ Owner G −286,000 —
2024-11-26 Carl L. G. Hansen Chief Executive Officer M +56,125 +$151.54K
2024-09-24 Carl L. G. Hansen Chief Executive Officer M +56,125 +$151.54K
2024-08-29 Thermopylae Holdings Ltd. 10%+ Owner Buy +283,516 +$739.98K
2024-06-24 John S. Montalbano Director A +163,934 deriv. —
2024-06-24 Michael R Hayden Director A +163,934 deriv. —
2024-06-24 Andrew Lo Director A +163,934 deriv. —
2024-06-24 Veronique Lecault Chief Operating Officer M +83,334 +$15.67K
2024-06-03 Carl L. G. Hansen Chief Executive Officer M +56,125 +$151.54K
2024-02-27 Carl L. G. Hansen Chief Executive Officer M +56,125 +$151.54K
2024-01-16 Tryn Stimart Chief Legal Officer A +616,333 deriv. —
2024-01-16 Veronique Lecault Chief Operating Officer A +770,416 deriv. —
2024-01-16 Andrew Booth Chief Financial Officer A +770,416 deriv. —
2024-01-16 Carl L. G. Hansen Chief Executive Officer A +2,095,532 deriv. —
2023-12-19 Thermopylae Holdings Ltd. 10%+ Owner G −210,000 —
2023-11-27 Carl L. G. Hansen Chief Executive Officer M +56,125 +$151.54K
2023-11-08 John S. Montalbano Director Buy +30,000 +$137.40K
2023-09-26 Michael R Hayden Director Buy +20,000 +$98.20K
ABCL — Current Insider Holders
InsiderRole Shares HeldValue
Carl L. G. Hansen Chief Executive Officer 56,984,009 $697.48M
Thermopylae Holdings Ltd. 10%+ Owner 56,134,097 $687.08M
Veronique Lecault Chief Technology Officer 2,397,086 $29.34M
Michael R Hayden Director 1,373,397 $16.81M
Andrew Booth Chief Financial Officer 613,759 $7.51M
John S. Montalbano Director 256,000 $3.13M
Andrew Lo Director 86,938 $1.06M
Tryn Stimart Chief Legal Officer 500 $6.12K
ABCL Insider Trading FAQ
Who are the insiders at ABCL?
8 officers, directors and 10%+ beneficial owners currently report holdings in ABCL via SEC Form 4.
Are ABCL insiders buying or selling?
Across the 50 most recent Form 4 filings for ABCL, 15 were open-market purchases (code P) and 0 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is ABCL insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent ABCL filing is dated 2026-08-24.
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 ABCL 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.