Mercury Computer Systems Inc

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Mercury Computer Systems Inc
TickerMRCY
CIK #0001049521
CUSIP589378108
SectorManufacturing - Electronic Components & Accessories
Address201 Riverneck Road, Chelmsford, MA 01824
Source [EDGAR]
CIK Filing 2011 - 2026
[0001049521] 10-K
[0001049521] 10-Q
[0001049521] 3
[0001049521] 4
[0001049521] 5
[0001049521] 8-K
[0001049521] SC 13D
[0001049521] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
State Street Corp Mercury Systems Inc [2026-05-12] 0.0
State Street Corp Mercury Systems Inc [2025-05-13] 0.0
State Street Corp Mercury Systems Inc [2025-02-05] 0.0
State Street Corp Mercury Systems Inc [2024-01-24] 5.97
Jana Partners LLC Mercury Systems Inc [2023-07-06] 8.0
Wellington Management Group LLP Mercury Systems Inc [2022-02-04] 5.04
Bank of America Corp /DE/ Mercury Systems Inc [2022-01-31] 5.2
Conestoga Capital Advisors LLC Mercury Systems Inc [2022-01-10] 6.47
Jana Partners LLC Mercury Systems Inc [2021-12-23] 6.6
William Blair Investment Management LLC Mercury Systems Inc [2021-02-11] 5.8
Barrow Hanley Mewhinney & Strauss LLC Mercury Systems Inc [2017-02-07] 12.0
Dimensional Fund Advisors LP Mercury Systems Inc [2016-02-09] 5.38
Barrow Hanley Mewhinney & Strauss LLC Mercury Systems Inc [2016-02-02] 7.05
Trigran Investments Inc Mercury Systems Inc [2015-02-13] 6.4
Barrow Hanley Mewhinney & Strauss LLC Mercury Systems Inc [2015-02-10] 7.47
Barrow Hanley Mewhinney & Strauss LLC Mercury Systems Inc [2014-02-12] 8.42
Invesco Ltd Mercury Systems Inc [2014-02-10] 5.8
Soros Fund Management LLC Mercury Systems Inc [2013-11-01] 5.02
Barrow Hanley Mewhinney & Strauss LLC Mercury Systems Inc [2013-02-11] 8.0
Mercury Computer Systems Inc Micronetics Inc [2012-06-28] 20.0
BAMCO Inc /NY/ Mercury Computer Systems Inc [2012-02-14] 5.72
Barrow Hanley Mewhinney & Strauss LLC Mercury Computer Systems Inc [2012-02-10] 5.58
Form 3/4/5 Filer 2011 - 2026
Lance Howard L
Mercury Systems Inc
Carvalho Orlando D
Ratner Steven
Nearhos Barry R
Farnsworth David E
JANA Partners Management LP
Munro Douglas
Kupinsky Stuart
Plunkett Debora A
BUA Jean A
Disbrow Lisa S
Demuro Gerard J
Ballhaus William L
Wells Charles Roger IV
Krone Roger A
Georges Stephanie
McCarthy Michelle M
Couture Allen
Stevison James Mitch
Cambria Christopher C
Jana Partners LLC
Harbison Christine Fox
Ostfeld Scott
Aslett Mark
Huber Thomas
Ruppert Michael
Obrien William K
Krakauer Mary L
Perry Brian E
Daniels Michael A
Bass James
Thibaud Didier M C
Vitto Vincent
Muellner George K
Haines Gerald M II
Newman Mark S
Speicher Charles A
Bisson Kevin M
Chamillard George W
Steele Lee C
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Ratner Steven
Common Stock
2026-03-16 Grant 437 $0.00
JANA Partners Management LP
Common Stock
2026-03-04 Sell 100,899 $89.68 9,048,622
JANA Partners Management LP
Common Stock
2026-03-03 Sell 168,648 $90.12 15,198,558
JANA Partners Management LP
"Common Stock, par value $0.01 per share (""Common Stock"")"
2026-03-02 Sell 182,510 $94.05 17,165,066
Lance Howard L
Common Stock
2026-02-25 Sell 4,832 $88.98 429,951
Munro Douglas
Common Stock
2026-02-17 Sell 582 $83.56 48,632
Kupinsky Stuart
Common Stock
2026-02-17 Sell 2,287 $83.56 191,102
JANA Partners Management LP
Common Stock, par value $0.01 per share
2026-02-09 Sell 400,000 $81.00 32,400,000
Nearhos Barry R
Common Stock
2026-01-15 Grant 474 $0.00
Munro Douglas
Common Stock
2025-11-12 Sell 1,329 $73.42 97,575
Plunkett Debora A
Common Stock
2025-11-07 Sell 1,700 $73.99 125,783
JANA Partners Management LP
Common Stock, par value $0.01 per share
2025-11-06 Sell 1,000,000 $75.45 75,450,000
Plunkett Debora A
Common Stock
2025-10-22 Grant 2,362 $0.00
JANA Partners Management LP
Common Stock, par value $0.01 per share
2025-10-22 Grant 2,362 $0.00
Disbrow Lisa S
Common Stock
2025-10-22 Grant 2,362 $0.00
Lance Howard L
Common Stock
2025-10-22 Grant 2,362 $0.00
Carvalho Orlando D
Common Stock
2025-10-22 Grant 2,362 $0.00
Demuro Gerard J
Common Stock
2025-10-22 Grant 2,362 $0.00
Nearhos Barry R
Common Stock
2025-10-22 Grant 2,362 $0.00
BUA Jean A
Common Stock
2025-10-22 Grant 2,362 $0.00
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 357 61,308,904
2025-12-31 350 61,161,419
2025-09-30 326 61,087,551
2025-06-30 285 64,194,621
2025-03-31 254 62,668,392
2024-12-31 245 63,313,434
2024-09-30 245 62,202,955
2024-06-30 234 64,765,028
2024-03-31 223 63,244,982
2023-12-31 220 59,782,796
2023-09-30 218 57,637,288
2023-06-30 239 56,396,275
Form 13F Holdings
Firm Period DFND Voting Shares
Swedbank AB [2026-06-30] DFND 244,299 244,299
Peregrine Capital Management LLC [2026-06-30] SOLE 49,262 135,071
Moody National Bank Trust Division [2026-06-30] DFND 292 46,204
Hennion & Walsh Asset Management Inc [2026-06-30] SOLE 43,902 43,902
HWG Holdings LP [2026-06-30] SOLE 36,605 36,605
Alaska Retirement Management Board [2026-06-30] SOLE 28,859 28,859
Louisiana State Employees Retirement System [2026-06-30] SOLE 23,400 23,400
Yousif Capital Management LLC [2026-06-30] SOLE 3,559 14,385
Commonwealth of Pennsylvania Public School Empls Retrmt SYS [2026-06-30] SOLE 12,530 12,530
Corecam Pte Ltd [2026-06-30] SOLE 0 9,965
Wealth Enhancement Advisory Services LLC [2026-06-30] SOLE 50 8,514
Guidance Capital Inc [2026-06-30] SOLE 0 6,927
Crossmark Global Holdings Inc [2026-06-30] SOLE 4,389 4,389
NorthCrest Asset Manangement LLC [2026-06-30] SOLE 0 3,249
Hilltop National Bank [2026-06-30] DFND 2,510 2,510
Fifth Third Wealth Advisors LLC [2026-06-30] SOLE 2,221 2,221
Gamma Investing LLC [2026-06-30] DFND 1,984 1,984
Silverberg Bernstein Capital Management LLC [2026-06-30] SOLE 0 1,700
First Bank & Trust [2026-06-30] SOLE 1,674 1,674
Merit Financial Group LLC [2026-06-30] SOLE 1 1,427
Merit Financial Group LLC [2026-06-30] OTR 0 799
IFP Advisors LLC [2026-06-30] SOLE 463 463
Versant Capital Management Inc [2026-06-30] SOLE 403 403
GHP Investment Advisors Inc [2026-06-30] SOLE 400 400
Farther Finance Advisors LLC [2026-06-30] SOLE 0 371
MassMutual Private Wealth & Trust FSB [2026-06-30] SOLE 204 204
Cedar Mountain Advisors LLC [2026-06-30] SOLE 0 152
Fortitude Family Office LLC [2026-06-30] SOLE 133 133
Toth Financial Advisory Corp [2026-06-30] SOLE 0 80
JFS Wealth Advisors LLC [2026-06-30] SOLE 0 61
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