Welcome to our dedicated page for Koppers Hldgs SEC filings (Ticker: KOP), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Koppers Holdings Inc. filings document the regulatory record for a NYSE-listed operating company with common stock trading under KOP. Its Form 8-K reports cover operating results, financial condition, executive officer changes, compensation arrangements, board committee assignments, and costs associated with exit or disposal activities.
Proxy and annual-report filings provide disclosure on governance, director elections, executive compensation, shareholder voting matters, audited financial statements, risk oversight and the company's capital structure. The filings tie these matters to Koppers' treated wood products, wood treatment chemicals and carbon compounds businesses.
Simcoe Capital and affiliates have disclosed a sizable stake in Koppers Holdings Inc. The group reports beneficial ownership of 1,349,005 shares of common stock, or approximately 7.0% of the company, based on 19,231,826 shares outstanding as of April 30, 2026.
Simcoe Partners directly owns 1,226,375 shares, Simcoe Select owns 86,845 shares and SDR Partners owns 35,785 shares, all bought in open-market transactions using working capital, including possible margin loans. Aggregate purchase prices are about $40.7 million, $3.7 million and $1.2 million, respectively.
The investors state they bought the stock because they believed it was substantially undervalued and say they are supportive of management’s current profitability, free cash flow, debt reduction and share repurchase focus. They reserve flexibility to increase or reduce their position, use derivatives or short sales, and potentially engage with management, the board and other shareholders on operational, governance, capital structure or strategic matters, including possible business combinations or asset dispositions.
Pearce Bradley A reported acquisition or exercise transactions in this Form 4 filing.
Koppers Holdings Inc. interim CFO and CAO Bradley A. Pearce received a compensation-related stock grant rather than buying shares on the market. On May 12, 2026, he was awarded 5,000 time-based restricted stock units that require no purchase price and will vest in full on May 12, 2029. After this award, he directly holds 43,037 shares of Koppers common stock.
Koppers Holdings Inc. CEO and director M. Leroy Ball reported an open-market sale of 2,659 shares of common stock at $42.55 per share. After this transaction, he directly holds about 444,096.4007 shares. This total includes 496 shares acquired through the company’s Employee Stock Purchase Plan on March 31, 2026.
Koppers Holdings Inc. — filing reports a passive investor's beneficial ownership. Fuller & Thaler Asset Management, Inc. states beneficial ownership of 978,590.23 shares, representing 4.98% of common stock. The filer reports sole voting power of 963,104.23 shares and sole dispositive power of 978,590.23 shares.
The filing is an amendment to a Schedule 13G, signed by the Chief Compliance Officer on 05/13/2026, and is labeled as ownership of 5 percent or less of a class.
Koppers Holdings Inc. director David L. Motley reported routine equity compensation-related transactions. He acquired 50 shares of common stock through the exercise or conversion of derivative securities, bringing his directly held common stock to 22,044 shares.
Motley also received a grant of 3,280 Restricted Stock Units, each representing the right to receive one share of common stock on a one-for-one basis, increasing his RSU balance to 13,198 units. In addition, 50 Dividend Equivalent Rights tied to prior RSU awards were released and converted on a one-for-one basis into common stock, contributing to 275.501 Dividend Equivalent Rights-related units outstanding. All transactions were classified as acquisitions, with no open-market buys or sells.
WILKERSON SONJA MICHELLE reported acquisition or exercise transactions in this Form 4 filing.
Koppers Holdings Inc. director Sonja Michelle Wilkerson received a grant of 3,280 Restricted Stock Units (RSUs) on May 7, 2026. Each RSU represents the right to receive one share of common stock and was granted at $0.00 as part of director compensation.
After this award, Wilkerson holds 17,976 RSUs directly. According to the company’s Director Deferred Compensation Plan, the RSUs will be paid in common stock either in a lump sum or annual installments, starting on May 31 following her separation from service or a later May 31 date she previously elected.
Sandifer Andrew D reported acquisition or exercise transactions in this Form 4 filing.
Koppers Holdings Inc. director Andrew D. Sandifer reported receiving a grant of 3,280 Restricted Stock Units (RSUs), each representing the right to receive one share of common stock on a one-for-one basis. Following this award, he directly holds 10,137 RSUs tied to Koppers common stock.
The RSUs are governed by the Koppers Holdings Inc. Director Deferred Compensation Plan. They will be paid in either a lump sum or annual installments starting on May 31 following his separation from service, or on a later May 31 if he previously elected a different year under the plan.
Koppers Holdings Inc. director Laura J. Posadas reported equity-based compensation and a small related share acquisition. She received a grant of 3,280 shares of common stock at no cost, bringing one reported direct holding to 5,531 shares. She also acquired 11 additional common shares through the exercise of dividend equivalent rights tied to previously granted restricted stock units, with that holding reported at 2,251 shares after the transaction. All activity reflects awards and derivative exercises rather than open-market buying or selling.
Koppers Holdings Inc. director Xudong Feng reported an equity compensation grant of common stock. On May 7, 2026, he acquired 3,280 shares of common stock at $0.00 per share as a grant described as time-based restricted stock units. Following this award, Feng directly holds 32,184 shares of Koppers common stock.
Koppers Holdings Inc. director Albert J. Neupaver acquired 50 shares of common stock on May 7, 2026. The shares were issued upon the release of Dividend Equivalent Rights, which convert on a one-for-one basis into common stock when related RSUs vest. These rights were tied to RSUs granted on May 8, 2025. After this compensation-related transaction, Neupaver directly holds 83,834 shares of Koppers common stock.