Summary
Updated Aug 31, 2026
Thomas P. Lynch files SEC Form 4 reports at BillionToOne, Inc. (BLLN). 1 SEC Form 4 filing on record, dated 12 November 2025. Most recent open-market trade: bought $6K of BLLN on 12 November 2025. Lifetime open-market purchases: $6K.
Recent Transactions
3Every recent SEC Form 4 transaction Thomas P. Lynch has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Thomas P. Lynch go back to 2025: 1 primary Form 4 filing, an average of 0.5 per year. The typical open-market purchase is $6K (1 buy totaling $6K). The largest single buy on record is $6K of BLLN in 2025. 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 Thomas P. Lynch 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.
- Oguzhan Atay - $18.60M of BLLN open-market activity in the last 12 months
- David Tsao - $6.53M of BLLN open-market activity in the last 12 months
- Nancy Joann Johnson - $3.74M of BLLN open-market activity in the last 12 months
- Shan Riku Sakakibara - $3.23M of BLLN open-market activity in the last 12 months
- Thomas S. Bremner - $2.50M of BLLN open-market activity in the last 12 months
- Bosch John Roderick Ten - $1.31M of BLLN 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 Thomas P. Lynch?
Thomas P. Lynch is a corporate insider of BillionToOne, Inc. (BLLN). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Thomas P. Lynch last file a Form 4?
The only primary Form 4 on record is dated 12 November 2025.
Has Thomas P. Lynch been buying or selling stock?
Recorded transactions: 1 open-market purchase ($6K) and 0 open-market sales across all tracked filings.
Where can I see all of Thomas P. Lynch'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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