Summary
Updated Aug 31, 2026
Catherine Bollard files SEC Form 4 reports at Cabaletta Bio, Inc. (CABA). 2 SEC Form 4 filings on record, most recently on 10 June 2026. Most recent open-market trade: bought $10K of CABA on 21 January 2026. Lifetime open-market purchases: $10K.
Recent Transactions
1Every recent SEC Form 4 transaction Catherine Bollard has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Catherine Bollard go back to 2026: 2 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $10K (1 buy totaling $10K). The largest single buy on record is $10K of CABA in 2026. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Catherine Bollard 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.
- Steven Nichtberger - $101K of CABA open-market activity in the last 12 months
- Shawn Tomasello - $50K of CABA open-market activity in the last 12 months
- Steve Gavel - $50K of CABA open-market activity in the last 12 months
- Mark Simon - $25K of CABA open-market activity in the last 12 months
- Gwendolyn Binder - $25K of CABA open-market activity in the last 12 months
- David J. Chang - $20K of CABA 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 Catherine Bollard?
Catherine Bollard is a corporate insider of Cabaletta Bio, Inc. (CABA). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Catherine Bollard submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Catherine Bollard been buying or selling stock?
Recorded transactions: 1 open-market purchase ($10K) and 0 open-market sales across all tracked filings.
Where can I see all of Catherine Bollard'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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