MERCURY SYSTEMS INC (MRCY)

Data as of Sep 23, 2026, from SEC Form 4 filings.

Net insider selling (90d)Watch MRCY

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Latest MRCY insider trades

Stuart Kupinsky - Officer
Open-market sale$87K
Sep 21, 2026
Steven Ratner - Officer

About MERCURY SYSTEMS INC (MRCY)

MERCURY SYSTEMS INC is an SEC registrant, filing under CIK 0001049521, classified as electronic components and accessories. It is grouped with Information Technology companies on this site.

Sector: Information Technology

SEC filings for MRCY on EDGAR

MRCY Form 4 activity by transaction type, last 90 days

Form 4 transaction type	Transactions	Shares	Total value
Open-market sale	31	451,186	$41.86M
Grant or award	6	45,699
Option exercise	10	934,000

MRCY insider transactions (Form 4)

80 Form 4 filings on record, the earliest from Oct 25, 2024, newest first. Filing history page 2 of 3.

Date	Insider	Transaction	Security	Shares	Price	Value
Apr 16, 2026	David E. Farnsworth - Officer	Open-market sale	Common Stock	3,625^{footnote F1}	$84.87^{footnote F2}	$308K
Footnote F1 (shares): Represents shares sold as part of a sell-to-cover program to satisfy tax withholding obligations upon the vesting of stock awards. Footnote F2 (price): Represents the per share price attributed to sales of shares on behalf of all participants under the sell-to-cover program on the transaction date indicated.
Mar 16, 2026	Steven Ratner - Officer	Grant or award	Common Stock	437^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents the deemed acquisition of restricted stock units earned as matching awards under Mercury's Deferred Compensation Matching Plan following the satisfaction of relevant performance criteria. The award governing these units was granted on December 23, 2024. The number of… Full note on SEC EDGAR
Mar 2, 2026	JANA Partners Management, LP - Director	Open-market sale	Common Stock, par value $0.01 per share ("Common Stock")	182,510	$94.05	$17.17M
Mar 3, 2026	JANA Partners Management, LP - Director	Open-market sale	Common Stock	168,648	$90.12^{footnote F3}	$15.20M
Mar 4, 2026	JANA Partners Management, LP - Director	Open-market sale	Common Stock	100,899	$89.68^{footnote F4}	$9.05M
Footnote F3 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.98 to $90.21, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F4 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.65 to $89.72, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC… Full note on SEC EDGAR
Feb 25, 2026	Howard L. Lance - Director	Open-market sale	Common Stock	4,832	$88.98^{footnote F1}	$430K
Footnote F1 (price): This transaction was executed in multiple trades at prices ranging from $88.98 to $89.30. The price reported above reflects the weighted average price of these trades. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security… Full note on SEC EDGAR
Feb 17, 2026	Stuart Kupinsky - Officer	Open-market sale	Common Stock	2,287^{footnote F1}	$83.56^{footnote F2}	$191K
Footnote F1 (shares): Represents shares sold as part of a sell-to-cover program to satisfy tax withholding obligations upon the vesting of stock awards. Footnote F2 (price): Represents the per share price attributed to sales of shares on behalf of all participants under the sell-to-cover program on the transaction date indicated.
Feb 17, 2026	Douglas Munro - Officer	Open-market sale	Common Stock	582^{footnote F1}	$83.56^{footnote F2}	$49K
Footnote F1 (shares): Represents shares sold as part of a sell-to-cover program to satisfy tax withholding obligations upon the vesting of stock awards. Footnote F2 (price): Represents the per share price attributed to sales of shares on behalf of all participants under the sell-to-cover program on the transaction date indicated.
Feb 9, 2026	JANA Partners Management, LP - Director	Open-market sale	Common Stock, par value $0.01 per share	400,000	$81.00	$32.40M
Jan 15, 2026	Barry R. Nearhos - Director	Grant or award	Common Stock	474^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents deferred stock units (DSUs) issued in lieu of a quarterly cash retainer payment for service as a director. These DSUs were fully vested upon grant, but do not convert into shares of common stock until the date on which the reporting person ceases to be a member of our… Full note on SEC EDGAR
Nov 12, 2025	Douglas Munro - Officer	Open-market sale	Common Stock	1,329	$73.42^{footnote F1}	$98K
Footnote F1 (price): This transaction was executed in multiple trades at prices ranging from $73.415 to $73.424. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the… Full note on SEC EDGAR
Nov 7, 2025	Debora A. Plunkett - Director	Open-market sale	Common Stock	1,700	$73.99	$126K
Nov 6, 2025	JANA Partners Management, LP - Director	Open-market sale	Common Stock, par value $0.01 per share	1,000,000	$75.45	$75.45M
Oct 22, 2025	Jean A. Bua - Director	Grant or award	Common Stock	2,362^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents deferred stock units (DSUs) that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders. Vested DSUs do not convert into shares of common stock until the date on which the reporting person ceases to be a member of… Full note on SEC EDGAR
Oct 22, 2025	Debora A. Plunkett - Director	Grant or award	Common Stock	2,362^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents deferred stock units (DSUs) that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders. Vested DSUs do not convert into shares of common stock until the date on which the reporting person ceases to be a member of… Full note on SEC EDGAR
Oct 22, 2025	Gerard J. Demuro - Director	Grant or award	Common Stock	2,362^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents deferred stock units (DSUs) that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders. Vested DSUs do not convert into shares of common stock until the date on which the reporting person ceases to be a member of… Full note on SEC EDGAR
Oct 22, 2025	Barry R. Nearhos - Director	Grant or award	Common Stock	2,362^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents deferred stock units (DSUs) that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders. Vested DSUs do not convert into shares of common stock until the date on which the reporting person ceases to be a member of… Full note on SEC EDGAR
Oct 22, 2025	Howard L. Lance - Director	Grant or award	Common Stock	2,362^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents restricted stock units that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders.
Oct 22, 2025	Orlando D. Carvalho - Director	Grant or award	Common Stock	2,362^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents restricted stock units that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders.
Oct 22, 2025	Lisa S. Disbrow - Director	Grant or award	Common Stock	2,362^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents restricted stock units that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders.
Oct 22, 2025	JANA Partners Management, LP - Director	Grant or award	Common Stock, par value $0.01 per share	2,362^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents deferred stock units ("DSUs") that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders. Vested DSUs do not convert into shares of common stock until the date on which Scott Ostfeld ("Mr. Ostfeld"), the Managing… Full note on SEC EDGAR
Oct 16, 2025	Barry R. Nearhos - Director	Grant or award	Common Stock	487^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents deferred stock units (DSUs) issued in lieu of a quarterly cash retainer payment for service as a director. These DSUs were fully vested upon grant, but do not convert into shares of common stock until the date on which the reporting person ceases to be a member of our… Full note on SEC EDGAR
Sep 16, 2025	Douglas Munro - Officer	Open-market sale	Common Stock	67	$73.40	$5K
Aug 20, 2025	Steven Ratner - Officer	Open-market sale	Common Stock	7,000	$63.76	$446K
Aug 18, 2025	Douglas Munro - Officer	Open-market sale	Common Stock	363	$66.52	$24K
Aug 19, 2025	Douglas Munro - Officer	Open-market sale	Common Stock	376	$64.46	$24K
Aug 18, 2025	Steven Ratner - Officer	Open-market sale	Common Stock	1,681	$66.52	$112K
Aug 19, 2025	Steven Ratner - Officer	Open-market sale	Common Stock	1,735	$64.46	$112K
Aug 18, 2025	Stuart Kupinsky - Officer	Open-market sale	Common Stock	1,182	$66.52	$79K
Aug 19, 2025	Stuart Kupinsky - Officer	Open-market sale	Common Stock	1,220	$64.46	$79K
Aug 18, 2025	David E. Farnsworth - Officer	Open-market sale	Common Stock	7,339	$66.52	$488K
Aug 19, 2025	David E. Farnsworth - Officer	Open-market sale	Common Stock	7,572	$64.46	$488K
Aug 18, 2025	William L. Ballhaus - Officer	Open-market sale	Common Stock	10,395	$66.52	$691K
Aug 19, 2025	William L. Ballhaus - Officer	Open-market sale	Common Stock	13,050	$64.46	$841K
Aug 15, 2025	Douglas Munro - Officer	Grant or award	Common Stock	3,380	$0.00	-
Aug 15, 2025	Steven Ratner - Officer	Grant or award	Common Stock	9,043	$0.00	-
Aug 15, 2025	Stuart Kupinsky - Officer	Grant or award	Common Stock	9,865	$0.00	-

Recent MRCY Form 8-K filings

Read MRCY company news

Sep 18, 2026Item 8.01

Read the filing on SEC EDGAR

Sep 16, 2026Item 1.01, 7.01, 9.01

Read the filing on SEC EDGAR

Aug 18, 2026Item 2.02, 9.01

Read the filing on SEC EDGAR

May 5, 2026Item 2.02, 9.01

Recent MRCY Form 144 notices of proposed sale

An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.

Filed	Filer	Relationship	Shares	Market value	Notice
Sep 21, 2026	KUPINSKY STUART	Officer	1,000	$87K	View on EDGAR
Sep 3, 2026	Ratner Steven	Officer	4,000	$338K

MRCY insider trading FAQ

What is the latest insider trade for MRCY?

MERCURY SYSTEMS INC (MRCY) had 26 insider filings in the last 90 days, with the most recent on 2026-09-23. The full record for MRCY runs to 80 Form 4 filings, the earliest from 2024-10-25. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.

How many insiders are buying MRCY stock?

No insider purchases of MRCY were filed in the last 90 days.

How many insiders are selling MRCY stock?

31 insider sales of MRCY were filed in the last 90 days, totaling $41.86M.

Where can I see MRCY SEC filings (Form 4, 10-K, 10-Q, 8-K)?

This page collects MRCY Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.

More Information Technology companies with insider activity

Recent insider filings

The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.

Sep 23, 2026 - Stuart Kupinsky view on EDGAR
Sep 15, 2026 - Steven Ratner view on EDGAR
Sep 15, 2026 - Douglas Munro view on EDGAR
Sep 15, 2026 - Stuart Kupinsky view on EDGAR
Sep 15, 2026 - David E. Farnsworth view on EDGAR
Sep 15, 2026 - William L. Ballhaus view on EDGAR
Sep 9, 2026 - Steven Ratner view on EDGAR
Aug 27, 2026 - William L. Ballhaus view on EDGAR
Aug 25, 2026 - Steven Ratner view on EDGAR

Related companies with recent insider activity

Learn more

Insider selling: signal or noise?: Why most insider sales are routine, and the few patterns worth a second look.
Form 144 vs Form 4: A Form 144 announces a planned sale; the Form 4 reports it after it happens.
Insider activity in Information Technology: Where MRCY's peers are being bought and sold.
Every recent Form 4: The market-wide feed, updated as filings arrive from SEC EDGAR.

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Form 4 transaction type

Transactions

Total value

Open-market sale

451,186

$41.86M

Grant or award

45,699

Option exercise

934,000

Date

Insider

Transaction

Security

Price

Value

Apr 16, 2026

David E. Farnsworth - Officer

Open-market sale

Common Stock

3,625^{footnote F1}

$84.87^{footnote F2}

$308K

Footnote F1 (shares): Represents shares sold as part of a sell-to-cover program to satisfy tax withholding obligations upon the vesting of stock awards.
Footnote F2 (price): Represents the per share price attributed to sales of shares on behalf of all participants under the sell-to-cover program on the transaction date indicated.

Mar 16, 2026

Steven Ratner - Officer

Grant or award

Common Stock

437^{footnote F1}

$0.00

Footnote F1 (shares): Represents the deemed acquisition of restricted stock units earned as matching awards under Mercury's Deferred Compensation Matching Plan following the satisfaction of relevant performance criteria. The award governing these units was granted on December 23, 2024. The number of… Full note on SEC EDGAR

Mar 2, 2026

JANA Partners Management, LP - Director

Open-market sale

Common Stock, par value $0.01 per share ("Common Stock")

182,510

$94.05

$17.17M

Mar 3, 2026

JANA Partners Management, LP - Director

Open-market sale

Common Stock

168,648

$90.12^{footnote F3}

$15.20M

Mar 4, 2026

JANA Partners Management, LP - Director

Open-market sale

Common Stock

100,899

$89.68^{footnote F4}

$9.05M

Footnote F3 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.98 to $90.21, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F4 (price): The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.65 to $89.72, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC… Full note on SEC EDGAR

Feb 25, 2026

Howard L. Lance - Director

Open-market sale

Common Stock

4,832

$88.98^{footnote F1}

$430K

Footnote F1 (price): This transaction was executed in multiple trades at prices ranging from $88.98 to $89.30. The price reported above reflects the weighted average price of these trades. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security… Full note on SEC EDGAR

Feb 17, 2026

Stuart Kupinsky - Officer

Open-market sale

Common Stock

2,287^{footnote F1}

$83.56^{footnote F2}

$191K

Footnote F1 (shares): Represents shares sold as part of a sell-to-cover program to satisfy tax withholding obligations upon the vesting of stock awards.
Footnote F2 (price): Represents the per share price attributed to sales of shares on behalf of all participants under the sell-to-cover program on the transaction date indicated.

Feb 17, 2026

Douglas Munro - Officer

Open-market sale

Common Stock

582^{footnote F1}

$83.56^{footnote F2}

$49K

Footnote F1 (shares): Represents shares sold as part of a sell-to-cover program to satisfy tax withholding obligations upon the vesting of stock awards.
Footnote F2 (price): Represents the per share price attributed to sales of shares on behalf of all participants under the sell-to-cover program on the transaction date indicated.

Feb 9, 2026

JANA Partners Management, LP - Director

Open-market sale

Common Stock, par value $0.01 per share

400,000

$81.00

$32.40M

Jan 15, 2026

Barry R. Nearhos - Director

Grant or award

Common Stock

474^{footnote F1}

$0.00

Footnote F1 (shares): Represents deferred stock units (DSUs) issued in lieu of a quarterly cash retainer payment for service as a director. These DSUs were fully vested upon grant, but do not convert into shares of common stock until the date on which the reporting person ceases to be a member of our… Full note on SEC EDGAR

Nov 12, 2025

Douglas Munro - Officer

Open-market sale

Common Stock

1,329

$73.42^{footnote F1}

$98K

Footnote F1 (price): This transaction was executed in multiple trades at prices ranging from $73.415 to $73.424. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the… Full note on SEC EDGAR

Nov 7, 2025

Debora A. Plunkett - Director

Open-market sale

Common Stock

1,700

$73.99

$126K

Nov 6, 2025

JANA Partners Management, LP - Director

Open-market sale

Common Stock, par value $0.01 per share

1,000,000

$75.45

$75.45M

Oct 22, 2025

Jean A. Bua - Director

Grant or award

Common Stock

2,362^{footnote F1}

$0.00

Footnote F1 (shares): Represents deferred stock units (DSUs) that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders. Vested DSUs do not convert into shares of common stock until the date on which the reporting person ceases to be a member of… Full note on SEC EDGAR

Oct 22, 2025

Debora A. Plunkett - Director

Grant or award

Common Stock

2,362^{footnote F1}

$0.00

Footnote F1 (shares): Represents deferred stock units (DSUs) that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders. Vested DSUs do not convert into shares of common stock until the date on which the reporting person ceases to be a member of… Full note on SEC EDGAR

Oct 22, 2025

Gerard J. Demuro - Director

Grant or award

Common Stock

2,362^{footnote F1}

$0.00

Footnote F1 (shares): Represents deferred stock units (DSUs) that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders. Vested DSUs do not convert into shares of common stock until the date on which the reporting person ceases to be a member of… Full note on SEC EDGAR

Oct 22, 2025

Barry R. Nearhos - Director

Grant or award

Common Stock

2,362^{footnote F1}

$0.00

Footnote F1 (shares): Represents deferred stock units (DSUs) that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders. Vested DSUs do not convert into shares of common stock until the date on which the reporting person ceases to be a member of… Full note on SEC EDGAR

Oct 22, 2025

Howard L. Lance - Director

Grant or award

Common Stock

2,362^{footnote F1}

$0.00

Footnote F1 (shares): Represents restricted stock units that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders.

Oct 22, 2025

Orlando D. Carvalho - Director

Grant or award

Common Stock

2,362^{footnote F1}

$0.00

Footnote F1 (shares): Represents restricted stock units that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders.

Oct 22, 2025

Lisa S. Disbrow - Director

Grant or award

Common Stock

2,362^{footnote F1}

$0.00

Footnote F1 (shares): Represents restricted stock units that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders.

Oct 22, 2025

JANA Partners Management, LP - Director

Grant or award

Common Stock, par value $0.01 per share

2,362^{footnote F1}

$0.00

Footnote F1 (shares): Represents deferred stock units ("DSUs") that vest on the earlier of the first anniversary of the grant date and the next annual meeting of shareholders. Vested DSUs do not convert into shares of common stock until the date on which Scott Ostfeld ("Mr. Ostfeld"), the Managing… Full note on SEC EDGAR

Oct 16, 2025

Barry R. Nearhos - Director

Grant or award

Common Stock

487^{footnote F1}

$0.00

Footnote F1 (shares): Represents deferred stock units (DSUs) issued in lieu of a quarterly cash retainer payment for service as a director. These DSUs were fully vested upon grant, but do not convert into shares of common stock until the date on which the reporting person ceases to be a member of our… Full note on SEC EDGAR

Sep 16, 2025

Douglas Munro - Officer

Open-market sale

Common Stock

$73.40

$5K

Aug 20, 2025

Steven Ratner - Officer

Open-market sale

Common Stock

7,000

$63.76

$446K

Aug 18, 2025

Douglas Munro - Officer

Open-market sale

Common Stock

363

$66.52

$24K

Aug 19, 2025

Douglas Munro - Officer

Open-market sale

Common Stock

376

$64.46

$24K

Aug 18, 2025

Steven Ratner - Officer

Open-market sale

Common Stock

1,681

$66.52

$112K

Aug 19, 2025

Steven Ratner - Officer

Open-market sale

Common Stock

1,735

$64.46

$112K

Aug 18, 2025

Stuart Kupinsky - Officer

Open-market sale

Common Stock

1,182

$66.52

$79K

Aug 19, 2025

Stuart Kupinsky - Officer

Open-market sale

Common Stock

1,220

$64.46

$79K

Aug 18, 2025

David E. Farnsworth - Officer

Open-market sale

Common Stock

7,339

$66.52

$488K

Aug 19, 2025

David E. Farnsworth - Officer

Open-market sale

Common Stock

7,572

$64.46

$488K

Aug 18, 2025

William L. Ballhaus - Officer

Open-market sale

Common Stock

10,395

$66.52

$691K

Aug 19, 2025

William L. Ballhaus - Officer

Open-market sale

Common Stock

13,050

$64.46

$841K

Aug 15, 2025

Douglas Munro - Officer

Grant or award

Common Stock

3,380

$0.00

Aug 15, 2025

Steven Ratner - Officer

Grant or award

Common Stock

9,043

$0.00

Aug 15, 2025

Stuart Kupinsky - Officer

Grant or award

Common Stock

9,865

$0.00

Filed

Filer

Relationship

Market value

Notice

Sep 21, 2026

KUPINSKY STUART

Officer

1,000

$87K

View on EDGAR

Sep 3, 2026

Ratner Steven

Officer

4,000

$338K