Aby J. Mathew, Executive Vice President and Chief Scientific Officer of BioLife Solutions Inc, filed a Form 4 on September 10, 2026, disclosing a share withholding transaction dated September 8, 2026, related to the release of restricted stock units.

Key Highlights

  • Reporting person: Aby J. Mathew, EVP and Chief Scientific Officer of BioLife Solutions Inc (NASDAQ:BLFS)
  • Transaction date: September 8, 2026
  • Shares disposed: 627 shares of Common Stock withheld by the issuer at $35.38 per share
  • Purpose of disposition: Shares withheld to satisfy tax withholding obligations upon release of restricted stock units
  • Beneficial ownership following transaction: 387,833 shares of Common Stock held directly

BioLife Solutions Officer Reports RSU Tax Withholding Event

According to the filing, Aby J. Mathew, who serves as Executive Vice President and Chief Scientific Officer at BioLife Solutions Inc, reported a single transaction involving the disposition of 627 shares of Common Stock on September 8, 2026. The transaction was coded "F," indicating shares withheld by the issuer. The filing's footnote states that the shares represent "the number of shares withheld by the Issuer to satisfy tax withholding obligations of the reporting person that arose upon the release of restricted stock units."

The shares were disposed of at a price of $35.38 each, and the transaction was reported as a direct holding. Following this transaction, the filing discloses that Mathew directly beneficially owned 387,833 shares of Common Stock. No derivative securities transactions were reported in Table II of the filing.

The Form 4 was filed by one reporting person and signed by Aby J. Mathew on September 10, 2026. The filing does not indicate that the transaction was made pursuant to a Rule 10b5-1(c) plan, as the corresponding box was not checked.

What Was Disclosed

The filing disclosed a tax-related withholding of 627 shares of Common Stock at $35.38 per share from Aby J. Mathew upon the vesting of restricted stock units, leaving the officer with direct beneficial ownership of 387,833 shares.