ABCL insider buying and SEC filings, explained
AbCellera Biologics Inc. · CIK 1703057
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$2.7M
Insiders who bought
4
Sold (not marked 10b5-1)
$0
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Aug 24, 2026 | Purchase (code P) | Michael R Hayden (Director) bought 53,613 shares indirectly at about $10.64 ($570K), reported as a purchase (code P). Indirect holdings up 4% to 1,373,397 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 24, 2026 |
| Aug 18, 2026 | Purchase (code P) | John S. Montalbano (Director) bought 10,000 shares at $11.03 ($110K), reported as a purchase (code P). Holdings up 4% to 251,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 18, 2026 |
| Aug 14, 2026 | Purchase (code P) | Andrew Booth (CFO) bought 37,200 shares at $10.32 ($384K), reported as a purchase (code P). Holdings up 8% to 482,800 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 14, 2026 |
| Aug 12, 2026 | Purchase (code P) | Michael R Hayden (Director) bought 46,387 shares indirectly at about $10.37 ($481K), reported as a purchase (code P). Indirect holdings up 4% to 1,319,784 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 14, 2026 |
| May 14, 2026 | Purchase (code P) | John S. Montalbano (Director) bought 20,000 shares at $4.77 ($95K), reported as a purchase (code P). Holdings up 9% to 241,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 18, 2026 |
| Feb 27, 2026 | Purchase (code P) | Thermopylae Holdings Ltd. (10% owner) bought 38,000 shares at about $3.44 ($131K), reported as a purchase (code P). Holdings up <1% to 56,134,097 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 2, 2026 |
| Feb 27, 2026 | Purchase (code P) | Andrew Booth (CFO) bought 42,600 shares at $3.42 ($146K), reported as a purchase (code P). Holdings up 28% to 195,600 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 27, 2026 |
| Feb 26, 2026 | Purchase (code P) | Thermopylae Holdings Ltd. (10% owner) bought 177,457 shares at about $3.27 ($580K), reported as a purchase (code P). Holdings up <1% to 56,096,097 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 27, 2026 |
| Nov 26, 2025 | Purchase (code P) | John S. Montalbano (Director) bought 50,000 shares at $3.57 ($179K), reported as a purchase (code P). Holdings up 29% to 221,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 26, 2025 |
13 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
3 insiders bought in 30 days
$1.5M in purchases since Aug 12, 2026 · Purchases traded Aug 12, 2026 to Aug 24, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Michael R Hayden (Director) | $481K | Aug 12, 2026 | SEC filing |
| Andrew Booth (CFO) | $384K | Aug 14, 2026 | SEC filing |
| John S. Montalbano (Director) | $110K | Aug 18, 2026 | SEC filing |
| Michael R Hayden (Director) | $570K | Aug 24, 2026 | SEC filing |
2 insiders bought in 30 days
$857K in purchases since Feb 26, 2026 · Purchases traded Feb 26, 2026 to Feb 27, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Thermopylae Holdings Ltd. (10% owner) | $580K | Feb 26, 2026 | SEC filing |
| Andrew Booth (CFO) | $146K | Feb 27, 2026 | SEC filing |
| Thermopylae Holdings Ltd. (10% owner) | $131K | Feb 27, 2026 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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