Bylund James 4

What Happened

• James Bylund, Chief Operating Officer of Repligen Corp (RGEN), had restricted stock units (RSUs) released and the company withheld shares to cover tax withholding obligations. A total of 3,911 shares were withheld/disposed: 1,478 shares at $128.73 on 2026-02-27 ($190,263) and 2,433 shares at $124.97 on 2026-03-02 ($304,052). Combined value of the withheld shares is about $494,315.
• This is a tax-withholding/cashless-type disposition (routine) rather than an open-market sale intended as a market signal.

Key Details

• Transaction dates and amounts:
  • 2026-02-27: 1,478 shares withheld at $128.73 — $190,263
  • 2026-03-02: 2,433 shares withheld at $124.97 — $304,052
• Total shares withheld/disposed: 3,911; total value ≈ $494,315.
• Shares owned after the transaction: Not specified in the provided filing.
• Footnote: F1 — these shares were withheld by the issuer to satisfy the reporting person’s tax withholding obligations upon RSU release.
• Filing info: Form 4 filed with the SEC on 2026-03-03; timing appears to be within the normal Form 4 reporting window.

Context

• This was a tax-withholding (cashless) disposition tied to RSU vesting, a common administrative action that reduces an insider’s share count to cover taxes and does not necessarily indicate a discretionary sale or change in sentiment.
• For retail investors, withholding disposals are routine and generally less informative than open-market purchases or planned sales.