Bolanowski Katherine 4

What Happened

• Katherine Bolanowski, General Counsel, Vice President and Secretary of Gibraltar Industries (ROCK), disposed of 739 shares on March 1, 2026 to satisfy a tax payment/withholding obligation. The shares were disposed at $45.48 each for total proceeds of approximately $33,610. The transaction is reported on a Form 4 filed March 3, 2026 and is coded as "F" (payment of exercise price or tax liability).

Key Details

• Transaction date: 2026-03-01; Price: $45.48 per share; Total value: ~$33,610
• Transaction type/code: F — payment of tax liability / exercise price (i.e., shares disposed to cover taxes)
• Filing date: 2026-03-03 (reported on Form 4); filing appears timely
• Shares owned after the transaction: not specified in the filing
• Footnote F1: These shares relate to matching restricted stock units (RSUs) allocated in connection with the Reporting Person’s deferral of salary and annual cash incentive under the Company’s 2018 Management Stock Purchase Plan.
• Footnote F2: The RSUs have vesting/forfeiture and cash-settlement rules (forfeited if service ends before the 5th anniversary of vesting commencement; if service continues beyond that, RSUs are payable in cash in lump sum or installments as elected).

Context

• This disposition appears to be a routine tax-withholding sale tied to restricted stock units rather than an open-market, discretionary sale; such transactions are commonly used to satisfy tax obligations on compensation awards and do not necessarily signal a change in the insider’s view of the company.