Summary
Updated Aug 30, 2026
John S. Montalbano is Director of AbCellera Biologics Inc. (ABCL). 4 SEC Form 4 filings on record going back to 2025, most recently on 18 August 2026. Most recent open-market trade: bought $110K of ABCL on 18 August 2026. Lifetime open-market purchases: $384K.
Recent Transactions
3Every recent SEC Form 4 transaction John S. Montalbano has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies John S. Montalbano files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Michael R. Hayden - $1.05M of ABCL open-market activity in the last 12 months
- Thermopylae Holdings Ltd. - $711K of ABCL open-market activity in the last 12 months
- Andrew Booth - $530K of ABCL open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is John S. Montalbano?
John S. Montalbano is a corporate insider, tracked as Director of AbCellera Biologics Inc. (ABCL). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has John S. Montalbano submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has John S. Montalbano been buying or selling stock?
Recorded transactions: 3 open-market purchases ($384K) and 0 open-market sales across all tracked filings.
Where can I see all of John S. Montalbano's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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