Summary
Updated Aug 31, 2026
Thomas J. Klima files SEC Form 4 reports at bluebird bio, Inc. (BLUE). 2 SEC Form 4 filings on record going back to 2024, most recently on 3 June 2025. Most recent open-market trade: sold $529 of BLUE on 2 October 2024. Lifetime open-market sales: $529.
Recent Transactions
6Every recent SEC Form 4 transaction Thomas J. Klima has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Thomas J. Klima go back to 2024: 2 primary Form 4 filings, an average of 0.7 per year. 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 have reported open-market trades at the same companies as Thomas J. Klima. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Andrew Obenshain - $19K of BLUE open-market activity on record
- Richard A. Colvin - $1K of BLUE open-market activity on record
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Thomas J. Klima?
Thomas J. Klima is a corporate insider of bluebird bio, Inc. (BLUE). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Thomas J. Klima last file a Form 4?
The most recent primary Form 4 on record is dated 3 June 2025, one of 2 filings going back to 2024.
Has Thomas J. Klima been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($529) across all tracked filings.
Where can I see all of Thomas J. Klima'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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