Kolchinsky Peter
Director, 10% Owner · Climb Bio, Inc.
Every open-market stock purchase Kolchinsky Peter has reported to the SEC on Form 4 that met our signal bar, parsed straight from the filings. Insiders sell for many reasons, but they buy with their own money for one — this page tracks where those buys landed inside insider clusters and how the prices paid compare to where the stock trades now.
Where the buys stand today
- ARTVArtiva Biotherapeutics, Inc.
2 purchases totalling $100.0M at an average of $12.00 per share. See all insider buying in ARTV →
Avg price paid$12.00Latest price—Market capUnknown - CDTXCidara Therapeutics, Inc.
One purchase totalling $100.0M at an average of $44.00 per share. See all insider buying in CDTX →
Avg price paid$44.00Latest price—Market cap$7.0B - JANXJanux Therapeutics, Inc.
One purchase totalling $53.7M at an average of $44.75 per share. See all insider buying in JANX →
Avg price paid$44.75Latest price—Market capUnknown - ETNB89bio, Inc.
One purchase totalling $50.0M at an average of $8.75 per share. See all insider buying in ETNB →
Avg price paid$8.75Latest price—Market cap$2.3B - ELYMEliem Therapeutics, Inc.
2 purchases totalling $50.0M at an average of $3.84 per share. See all insider buying in ELYM →
Avg price paid$3.84Latest price—Market capUnknown - TYRA+203.1% vs price paidTyra Biosciences, Inc.
2 purchases totalling $11.8M at an average of $9.70 per share; the stock last traded at $29.41. See all insider buying in TYRA →
Avg price paid$9.70Latest price$29.41Market cap$1.8B - BOLDBoundless Bio, Inc.
2 purchases totalling $5.0M at an average of $16.00 per share. See all insider buying in BOLD →
Avg price paid$16.00Latest price—Market capUnknown - CLYM+453.1% vs price paidClimb Bio, Inc.
2 purchases totalling $754.7K at an average of $2.40 per share; the stock last traded at $13.27. See all insider buying in CLYM →
Avg price paid$2.40Latest price$13.27Market cap$759.9M
Cluster participation
Buys that landed within days of other insiders buying the same stock — the pattern this site exists to catch.
All reported buys
| Date | Ticker | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Dec 12, 2025 | CLYMcluster | 101,462 | $2.86 | $290.2K | SEC ↗ |
| Dec 11, 2025 | CLYMcluster | 213,099 | $2.18 | $464.6K | SEC ↗ |
| Jun 26, 2025 | CDTXcluster | 2,272,727 | $44.00 | $100.0M | SEC ↗ |
| Jun 5, 2025 | TYRAcluster | 213,334 | $10.04 | $2.1M | SEC ↗ |
| Jun 4, 2025 | TYRAcluster | 997,864 | $9.63 | $9.6M | SEC ↗ |
| Jan 30, 2025 | ETNBcluster | 5,714,285 | $8.75 | $50.0M | SEC ↗ |
| Oct 18, 2024 | 1,200,000 | $44.75 | $53.7M | SEC ↗ | |
| Jul 22, 2024 | ARTVcluster | 688,326 | $12.00 | $8.3M | SEC ↗ |
| Jul 22, 2024 | ARTVcluster | 7,645,007 | $12.00 | $91.7M | SEC ↗ |
| Jun 27, 2024 | 1,059,375 | $3.84 | $4.1M | SEC ↗ | |
| Jun 27, 2024 | 11,949,171 | $3.84 | $45.9M | SEC ↗ | |
| Apr 2, 2024 | BOLDcluster | 15,625 | $16.00 | $250.0K | SEC ↗ |
| Apr 2, 2024 | BOLDcluster | 296,875 | $16.00 | $4.8M | SEC ↗ |
Get alerted the next time Kolchinsky Peter — or any insider — buys
We watch every Form 4 as it hits SEC EDGAR and alert you when insiders cluster into the same stock.
About this data
Figures are parsed from Kolchinsky Peter's Form 4 filings on SEC EDGAR (CIK 1384859) and cover open-market purchases (transaction code P) — grants, option exercises, and sales are excluded, which is why totals here can differ from raw filing counts. Every row links to its source document.
This page is informational and reflects public filing data. It is not investment advice.