A. Mark Zeffiro

Companies

• Atkore Inc.Board member Jun 9, 2016 to now¹
• Horizon Global CorpChief executive officer Mar 3, 2016 to Mar 5, 2018²
• Horizon Global CorpBoard member Jun 22, 2015 to Mar 5, 2018³
• Horizon Global CorpPresident Jun 22, 2015 to Mar 5, 2018³
• TRIMAS CORPChief financial officer Sep 25, 2008 to Oct 31, 2014⁴

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• AAtkore Inc. ATKR23,994 shares⁵$2.3M at $94.96Aug 28, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Aug 28, 2026Granted 48 shares of Atkore Inc.⁵
• May 29, 2026Granted 54 shares of Atkore Inc.⁶
• Feb 27, 2026Granted 69 shares of Atkore Inc.⁷
• Jan 29, 2026Granted 2,275 shares of Atkore Inc.⁸
• Dec 17, 2025Granted 68 shares of Atkore Inc.⁹
• Aug 29, 2025Granted 74 shares of Atkore Inc.¹⁰
• May 28, 2025Granted 64 shares of Atkore Inc.¹¹
• Feb 28, 2025Granted 67 shares of Atkore Inc.¹²
• Jan 30, 2025Granted 1,795 shares of Atkore Inc.¹³
• Dec 16, 2024Granted 43 shares of Atkore Inc.¹⁴
• Aug 30, 2024Granted 40 shares of Atkore Inc.¹⁵
• May 31, 2024Granted 25 shares of Atkore Inc.¹⁵
• May 22, 2024Sold 2,000 shares at $154.11 of Atkore Inc.¹⁶
• Mar 15, 2024Granted 23 shares of Atkore Inc.¹⁵
• Jan 30, 2024Granted 956 shares of Atkore Inc.¹⁷
• May 24, 2023Sold 750 shares at $118.82 of Atkore Inc.¹⁸
• Jan 27, 2023Granted 1,099 shares of Atkore Inc.¹⁹
• Jan 27, 2022Granted 1,491 shares of Atkore Inc.²⁰