Mercury Systems, Inc. (MRCY) Insider Trading

Over the last 3 months, MRCY insiders made 0 open-market buys and 29 sales, a net sale of -$41.4M (SEC Form 4). Over the last 6 months, 268 institutions increased and 256 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
29
Net (3m)
-$41.4M
Insider trades by month Buys Sells
Nov
Feb
Mar
Apr
May
Aug
Context3-month price -21.7%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
Aug 27, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOOption68,476$43.00
Aug 27, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOSell10,814$89.74
Aug 27, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOSell107,628$87.09
Aug 27, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOSell38,276$88.91
Aug 27, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOSell3,448$87.99
Aug 27, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOOption153,676$43.00
Aug 25, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOOption140,650$42.00
Aug 25, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOOption92,850$42.00
Aug 25, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOOption11,348$43.00
Aug 25, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOSell204$93.51
Aug 25, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOSell64,796$92.40
Aug 25, 2026Ratner Stevenofficer: EVP, CHROSell356$91.36
Aug 25, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOSell105,471$89.47
Aug 25, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOSell2,738$90.60
Aug 25, 2026KUPINSKY STUARTofficer: EVP, CLO & Corp SecSell1,000$95.23
Aug 21, 2026Ratner Stevenofficer: EVP, CHROSell2,187$100.31
Aug 21, 2026Munro Douglasofficer: SVP, CAOSell109$97.67
Aug 21, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOSell26,802$100.31
Aug 21, 2026Ratner Stevenofficer: EVP, CHROSell1,026$97.67
Aug 21, 2026KUPINSKY STUARTofficer: EVP, CLO & Corp SecSell1,308$100.31
Aug 21, 2026Munro Douglasofficer: SVP, CAOSell548$100.31
Aug 21, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOSell22,010$97.67
Aug 21, 2026Farnsworth David E.officer: EVP, CFOSell8,155$100.31
Aug 21, 2026Farnsworth David E.officer: EVP, CFOSell6,612$97.67
Aug 19, 2026Farnsworth David E.officer: EVP, CFOSell1,345$109.95
Aug 19, 2026Farnsworth David E.officer: EVP, CFOSell7,347$111.36
Aug 19, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOSell3,536$109.95
Aug 19, 2026Munro Douglasofficer: SVP, CAOSell404$109.95
Aug 19, 2026Ballhaus William Ldirector, officer: Chairman, President & CEOSell24,144$111.36
Aug 19, 2026KUPINSKY STUARTofficer: EVP, CLO & Corp SecSell1,178$111.36

Source: MRCY SEC Form 4 filings, latest Aug 27, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their MRCY positions over the last 6 months (SEC Form 13F).

Increased
268
New positions
145
Reduced
256
Sold out
43
Largest moves
InstitutionActionSharesFiled
BlackRock, Inc.Increased9.4MAug 7, 2026
BLACKROCK, INC.Increased8.9MMay 13, 2026
JANA PARTNERS MANAGEMENT, LPReduced4.1MMay 15, 2026
JANA Partners Management, LPReduced4.0MAug 14, 2026
STATE STREET CORPIncreased3.9MMay 15, 2026
STATE STREET CORPReduced3.4MAug 7, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCIncreased3.0MAug 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position2.9MMay 8, 2026
Invesco Ltd.Increased2.7MAug 14, 2026
INVESCO LTD.Increased2.4MMay 12, 2026
VANGUARD CAPITAL MANAGEMENT LLCIncreased2.4MAug 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position2.4MMay 15, 2026
CONESTOGA CAPITAL ADVISORS, LLCReduced1.9MApr 24, 2026
FMR LLCIncreased1.8MAug 13, 2026
T. Rowe Price Investment Management, Inc.Increased1.6MAug 14, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.