Latest filing published 20 Feb 2026 for Caribou Biosciences, Inc.. Read the official filing
Across 1 buy signal with a settled T+90 return. Return basis: close on the day after publication.
Rachel E. Haurwitz, listed as chief executive, has filed trades across 2 companies (mainly through SEC (Form 4)), most often in Caribou Biosciences, Inc. and Seer, Inc. The record holds 12 filings, for trades running from 26 January 2022 to 20 February 2026.
The open-market record is one-sided, with 1 purchase worth €19k and not one sale. Unlike grants, an open-market purchase is paid for by the insider, at the market price. Besides market trades, the filings include 6 share grants and 5 option exercises.
The record was last updated on 20 February 2026 with a share grant in Caribou Biosciences, Inc. The last insider purchase was made public on 17 March 2025, 580 days ago. Typically, a trade is published a median of 2 days after it takes place. The legal deadline for a Form 4 is two business days after the transaction. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.
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12 of 12 declarations