Werner Sean 4

What Happened

• Sean Werner, Chief Technology Officer of BioLife Solutions (BLFS), had 275 shares withheld by the company to satisfy tax withholding obligations tied to the release of restricted stock units. The shares were valued at $29.15 each, totaling approximately $8,016. This was a tax-withholding disposition (code F), not an open-market sale.

Key Details

• Transaction date: 2026-07-17
• Price per share: $29.15; Shares involved: 275; Total value: ~$8,016
• Transaction code: F (shares withheld to satisfy tax liability on RSU release)
• Footnote: F1 – issuer withheld these shares to satisfy the reporting person’s tax withholding obligations upon RSU release
• Filing: Report filed 2026-07-21 for the 2026-07-17 transaction (appears timely based on filing date)
• Shares owned after transaction: Not specified in the provided data

Context

• This was a tax-withholding action related to vested restricted stock units, a routine administrative disposition that does not reflect an open-market sale. Such withholdings are common when RSUs vest and generally do not by themselves indicate the insider’s view of the company’s stock.