Apostolou Stephanie L 4
4 · Koppers Holdings Inc. · Filed Mar 2, 2026
Research Summary
AI-generated summary of this filing
Koppers (KOP) CLO Stephanie Apostolou Surrenders 3,149 Shares
What Happened
Stephanie L. Apostolou, Chief Legal & Sustainability Officer and Secretary of Koppers Holdings, had performance-based awards vest on Feb 26, 2026 and received shares as a result. The filing shows she was credited with 7,223 shares from vested PSUs and an additional 174 shares tied to dividend-equivalent rights (DERs) (total = 7,397 shares acquired at $0). To satisfy tax withholding on the vesting, she surrendered 3,149 shares to the issuer (disposed) at an imputed value of $37.24 per share for a tax withholding amount of $117,269. The filing also lists derivative conversion entries (code M) tied to the DERs.
Key Details
- Transaction date: February 26, 2026; Form 4 filed March 2, 2026 (filed within the typical two-business-day window).
- Awards/acquisitions: 7,223 shares (PSUs) + 174 DER-related shares acquired at $0.
- Disposition for tax withholding: 3,149 shares surrendered at $37.24 each = $117,269.
- Transaction codes: A = award/grant; M = exercise/conversion of a derivative; F = shares surrendered for tax withholding.
- Shares owned after transaction: Not stated in the Form 4 filing.
- Footnotes: PSUs were granted Jan 4, 2023 and performance conditions for the 2023–2025 measurement period were met; DERs are economic equivalents to shares and were released on vesting; shares were surrendered specifically to cover tax withholding.
Context
This was primarily an award vesting and tax-withholding event — not an open-market sale. The reported dispositions were shares surrendered to the company to satisfy tax obligations on vested PSUs (a routine administrative action). The derivative entries reflect conversion/release of DERs related to the vested PSUs. Such internal tax-withholding surrenders generally do not indicate a change in the insider’s investment view of the company.
Insider Transaction Report
- Award
Common Stock
[F1]2026-02-26+7,223→ 66,125 total - Exercise/Conversion
Common Stock
[F2]2026-02-26+174→ 66,299 total - Tax Payment
Common Stock
[F3]2026-02-26$37.24/sh−3,149$117,269→ 63,150 total - Award
Dividend Equivalent Rights
[F4]2026-02-26+174→ 322 total→ Common Stock (174 underlying) - Exercise/Conversion
Dividend Equivalent Rights
[F5]2026-02-26−174→ 148 total→ Common Stock (174 underlying)
Footnotes (5)
- [F1]On January 4, 2023, the reporting person was granted performance share units ("PSUs") for which the performance criteria for the measurement period from January 1, 2023 through December 31, 2025 have been satisfied.
- [F2]Represents shares acquired upon release of dividend equivalent rights ("DERs"), as reported in Table II, on a one-for-one basis.
- [F3]Shares surrendered to the issuer by the reporting person as payment for the tax withholding related to the vesting of PSUs.
- [F4]The DERs accrued with respect to additional PSUs credited to the reporting person with respect to PSUs granted on January 4, 2023. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock.
- [F5]These DERs were released in connection with the vesting of PSUs granted on January 4, 2023. Each DER is the economic equivalent of one share of Koppers Holdings Inc. common stock.