Stephanie L. O'Sullivan

Sits on 2 boards. Last updated September 28, 2026

Time on boards

Boards served
2
Current seats
2
Board service
6 years
Director since
2023

6 years of board service in total across 2 boards, counting each seat separately. Longest: Huntington Ingalls Industries Inc., 3 years.

3 years ยท Since 2023
2 years ยท Since 2024

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Date Company Transaction Shares Price Value
Jul 1, 2026 Huntington Ingalls Industries Inc. Grant or award +174 $278.97 $48,541
Jun 12, 2026 Huntington Ingalls Industries Inc. Grant or award +19 โ€” โ€”
Apr 1, 2026 Huntington Ingalls Industries Inc. Grant or award +123 $393.32 $48,378
Mar 13, 2026 Huntington Ingalls Industries Inc. Grant or award +13 โ€” โ€”
Jan 2, 2026 Huntington Ingalls Industries Inc. Grant or award +139 $349.75 $48,615
Dec 12, 2025 Huntington Ingalls Industries Inc. Grant or award +16 โ€” โ€”
Oct 1, 2025 Huntington Ingalls Industries Inc. Grant or award +144 $286.01 $41,185
Sep 12, 2025 Huntington Ingalls Industries Inc. Grant or award +18 โ€” โ€”
Jul 1, 2025 Huntington Ingalls Industries Inc. Grant or award +167 $246.31 $41,134
Jun 20, 2025 Centrus Energy Corp. Grant or award +684 โ€” โ€”
Jun 20, 2025 Centrus Energy Corp. Shares withheld for tax โˆ’1,168 โ€” โ€”
Jun 13, 2025 Huntington Ingalls Industries Inc. Grant or award +20 โ€” โ€”
Apr 1, 2025 Huntington Ingalls Industries Inc. Grant or award +204 $202.20 $41,249
Mar 14, 2025 Huntington Ingalls Industries Inc. Grant or award +22 โ€” โ€”
Jan 2, 2025 Huntington Ingalls Industries Inc. Grant or award +219 $187.61 $41,087

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