Peter Altabef

Companies

• NiSourceBoard member Jan 30, 2017 to now¹
• UnisysBoard member Jan 7, 2015 to now²
• UnisysChief executive officer Jan 7, 2015 to Mar 3, 2025²
• UnisysPresident Jan 7, 2015 to Mar 3, 2020²
• BeloBoard member Jul 29, 2011 to Dec 23, 2013³
• Micros SystemsBoard member Jan 2, 2013 to Nov 25, 2013⁴
• Micros SystemsChief executive officer Jan 2, 2013 to Nov 25, 2013⁴
• Micros SystemsPresident Jan 2, 2013 to Nov 25, 2013⁴

Holdings

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

Shares held

• Unisys UIS1,454,013 shares⁵$3.2M at $2.23Feb 27, 2026
• NiSource NI56,615 shares⁶$2.4M at $41.98May 11, 2026

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

Recent filings

• May 11, 2026Granted 3,807 shares at $47.03 of NiSource⁶
• Feb 27, 2026Granted 82,305 shares of Unisys⁵
• May 12, 2025Granted 4,541 shares at $38.32 of NiSource⁷
• Apr 1, 2025Granted 44,248 shares of Unisys⁸
• Mar 31, 2025Shares withheld for tax 27,406 shares at $4.59 of Unisys⁸
• Mar 31, 2025Shares withheld for tax 49,183 shares at $4.59 of Unisys⁸
• Feb 28, 2025Shares withheld for tax 27,406 shares at $4.31 of Unisys⁹
• Feb 28, 2025Shares withheld for tax 15,555 shares at $4.31 of Unisys⁹
• Feb 26, 2025Shares withheld for tax 24,591 shares at $4.41 of Unisys¹⁰
• Feb 26, 2025Shares withheld for tax 32,184 shares at $4.41 of Unisys¹⁰
• Feb 25, 2025Shares withheld for tax 6,365 shares at $4.30 of Unisys¹¹
• Feb 11, 2025Granted 81,790 shares of Unisys¹²
• Feb 11, 2025Granted 39,530 shares of Unisys¹²
• May 13, 2024Granted 6,042 shares at $28.80 of NiSource¹³
• Feb 28, 2024Shares withheld for tax 41,069 shares at $5.28 of Unisys¹⁴
• Feb 26, 2024Granted 187,483 shares of Unisys¹⁵
• Feb 26, 2024Shares withheld for tax 5,323 shares at $5.55 of Unisys¹⁵
• Feb 25, 2024Shares withheld for tax 6,365 shares at $5.25 of Unisys¹⁵
• Feb 12, 2024Granted 34,722 shares of Unisys¹⁶
• May 23, 2023Granted 6,031 shares at $27.36 of NiSource¹⁷
• Feb 28, 2023Shares withheld for tax 11,830 shares at $4.98 of Unisys¹⁸
• Feb 28, 2023Exercised options 30,066 shares of Unisys¹⁸
• Feb 28, 2023Shares withheld for tax 4,410 shares at $4.98 of Unisys¹⁸
• Feb 28, 2023Exercised options 11,209 shares of Unisys¹⁸
• Feb 24, 2023Shares withheld for tax 6,392 shares at $5.20 of Unisys¹⁹