Christopher Krawtschuk, Chief Financial Officer at bluebird bio, Inc. (BLUE), sold 4,526 shares at $4.52 ($20K) on 2023-12-06, disclosed to the SEC on 2023-12-08.
Open-market sale of $20k BLUE by Chief Financial Officer. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Something here stands out, but not much.