Mercury Systems Inc (MRCY) Insider Ownership

Historic Insider Ownership Trends

Mercury Systems's top three insider shareholders as of May 23, 2026 are Partners Management, Lp Jana (Director, 6.55Mn shares), Partners Management, Lp Jana (Director, 5.97Mn shares), Partners Llc Jana (Director, 4.71Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Roger A Krone - 15,311 0 25 Oct, 2024
Partners Llc Jana - 0 4,711,386 22 Aug, 2023
Jean A Bua - 7,815 0 24 Oct, 2025
William K Obrien - 13,100 0 28 Oct, 2022
James Bass - 67,634 0 29 Oct, 2021
Didier M C Thibaud Evp, Coo 245,917 0 18 Aug, 2021
Howard L Lance - 27,272 0 27 Feb, 2026
Gerard J Demuro - 17,481 0 24 Oct, 2025
Mark Aslett President And Ceo 508,858 0 23 Feb, 2023
Christopher C Cambria Evp, Gen Counsel Secretary 135,721 0 26 Sep, 2023
Stuart Kupinsky Evp, Clo Corp Sec 68,010 0 19 Feb, 2026
Michael A Daniels - 81,366 0 29 Oct, 2021
William L Ballhaus Chairman, President Ceo 374,976 0 20 Aug, 2025
Mary L Krakauer - 19,360 0 28 Oct, 2022
Orlando D Carvalho - 59,448 0 24 Oct, 2025
Stephanie Georges Evp, Cco 32,259 0 21 Aug, 2024
Debora A Plunkett - 16,833 0 10 Nov, 2025
Lisa S Disbrow - 31,236 0 24 Oct, 2025
Michael Ruppert Evp, Cfo And Treasurer 202,553 0 21 Feb, 2023
Michelle M Mccarthy Svp, Cao 32,724 0 21 Dec, 2023
Brian E Perry Evp, President Processing 87,913 0 22 Aug, 2022
Thomas Huber Evp Chief Transformation Offic 66,489 0 23 Feb, 2023
James Mitch Stevison Evp, President Mission Systems 86,385 0 17 Oct, 2023
Charles Roger Iv Wells Evp, Coo 95,928 0 19 Feb, 2025
Christine Fox Harbison Evp And Chief Growth Officer 52,220 0 21 Aug, 2023
Allen Couture Evp, Execution Excellence 65,222 0 19 Oct, 2023
David E. Farnsworth Evp, Cfo 161,326 0 20 Aug, 2025
Steven Ratner Evp, Chro 34,238 0 18 Mar, 2026
Partners Management, Lp Jana - 0 6,553,120 13 Feb, 2024
Douglas Munro Svp, Cao 14,328 0 19 Feb, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
16 Apr, 2026 Barry R Nearhos Common Stock A 245 $0.00 31,324 D A
16 Mar, 2026 Steven Ratner Common Stock A 437 $0.00 34,238 D A
16 Mar, 2026 Steven Ratner Common Stock A 437 $0.00 34,238 D A
16 Mar, 2026 Steven Ratner Common Stock A 437 $0.00 34,238 D A
02 Mar, 2026 Partners Management, Lp Jana Common Stock, par value $0.01 per share (Common Stock) D 182,510 $94.05 4,384,165 I S
03 Mar, 2026 Partners Management, Lp Jana Common Stock D 168,648 $90.12 4,215,517 I S
04 Mar, 2026 Partners Management, Lp Jana Common Stock D 100,899 $89.68 4,114,618 I S
25 Feb, 2026 Howard L Lance Common Stock D 4,832 $88.98 27,272 D S
17 Feb, 2026 Douglas Munro Common Stock D 582 $83.56 14,328 D S
17 Feb, 2026 Douglas Munro Common Stock D 582 $83.56 14,328 D S
17 Feb, 2026 Stuart Kupinsky Common Stock D 2,287 $83.56 68,010 D S
17 Feb, 2026 Douglas Munro Common Stock D 582 $83.56 14,328 D S
09 Feb, 2026 Partners Management, Lp Jana Common Stock, par value $0.01 per share D 400,000 $81.00 4,566,675 I S
15 Jan, 2026 Barry R Nearhos Common Stock A 474 $0.00 31,079 D A
12 Nov, 2025 Douglas Munro Common Stock D 1,329 $73.42 14,678 D S
12 Nov, 2025 Douglas Munro Common Stock D 1,329 $73.42 14,678 D S
12 Nov, 2025 Douglas Munro Common Stock D 1,329 $73.42 14,678 D S
07 Nov, 2025 Debora A Plunkett Common Stock D 1,700 $73.99 16,833 D S
07 Nov, 2025 Debora A Plunkett Common Stock D 1,700 $73.99 16,833 D S
07 Nov, 2025 Debora A Plunkett Common Stock D 1,700 $73.99 16,833 D S