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SEC Form 4 research

MERCURY SYSTEMS INC insider transactions

Inspect MERCURY SYSTEMS INC's public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001049521
Reporting owners
60
Officers and directors
39
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-09-232026-09-21KUPINSKY STUARTS1,000$86.52Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-21 and its public availability date is 2026-09-23. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

Recent insider disclosures

Inspect all 37 displayed rows: Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Scroll sideways to compare all columns. Select a heading to sort.

2026-09-232026-09-21KUPINSKY STUARTS1,000$86.52Not reported
2026-09-152026-08-17Ratner StevenA5,187$0Not reported
2026-09-152026-08-17Munro DouglasA2,882$0Not reported
2026-09-152026-08-17KUPINSKY STUARTA5,619$0Not reported
2026-09-152026-08-17Farnsworth David E.A8,212$0Not reported
2026-09-152026-08-17Ballhaus William LA23,629$0Not reported
2026-09-092026-09-03Ratner StevenS4,000$84.51Not reported
2026-08-282026-08-26Ballhaus William LS10,814$89.74Not reported
2026-08-282026-08-26Ballhaus William LS38,276$88.91Not reported
2026-08-282026-08-25Ballhaus William LS3,448$87.99Not reported
2026-08-282026-08-25Ballhaus William LS107,628$87.09Not reported
2026-08-262026-08-21Ratner StevenS356$91.36Not reported
2026-08-262026-08-21KUPINSKY STUARTS1,000$95.23Not reported
2026-08-262026-08-24Ballhaus William LS2,738$90.6Not reported
2026-08-262026-08-24Ballhaus William LS105,471$89.47Not reported
2026-08-262026-08-21Ballhaus William LS204$93.51Not reported
2026-08-262026-08-21Ballhaus William LS64,796$92.4Not reported
2026-08-222026-08-20Munro DouglasS109$97.67Not reported
2026-08-222026-08-19Munro DouglasS548$100.31Not reported
2026-08-222026-08-20Ratner StevenS1,026$97.67Not reported
2026-08-222026-08-19Ratner StevenS2,187$100.31Not reported
2026-08-222026-08-19KUPINSKY STUARTS1,308$100.31Not reported
2026-08-222026-08-20Farnsworth David E.S6,612$97.67Not reported
2026-08-222026-08-19Farnsworth David E.S8,155$100.31Not reported
2026-08-222026-08-20Ballhaus William LS22,010$97.67Not reported
2026-08-222026-08-19Ballhaus William LS26,802$100.31Not reported
2026-08-202026-08-18Munro DouglasS494$111.36Not reported
2026-08-202026-08-17Munro DouglasS404$109.95Not reported
2026-08-202026-08-18Ratner StevenS1,971$111.36Not reported
2026-08-202026-08-17Ratner StevenS1,084$109.95Not reported
2026-08-202026-08-18KUPINSKY STUARTS1,178$111.36Not reported
2026-08-202026-08-17KUPINSKY STUARTS1,195$109.95Not reported
2026-08-202026-08-18Farnsworth David E.S7,347$111.36Not reported
2026-08-202026-08-17Farnsworth David E.S1,345$109.95Not reported
2026-08-202026-08-18Ballhaus William LS24,144$111.36Not reported
2026-08-202026-08-17Ballhaus William LS3,536$109.95Not reported
2026-07-212026-07-16Nearhos Barry RA170$0Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 44 displayed rows: Officers and directors in the directory

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Carvalho Orlando D00015731578
LANCE HOWARD L0001220679402
Bass James00011994284
KRONE ROGER A000101308214
Perry Brian E00018783986
HAINES GERALD M II000118512120
Ruppert Michael000173099714
Huber Thomas00018848535
CAMBRIA CHRISTOPHER C000127560215
Ballhaus William L000143604418
Stevison James Mitch00018868806
Plunkett Debora A00016999978
ASLETT MARK0001231657157
BARROWS CRAIG00011778137
BELLE ISLE ALBERT P000105408536
BERTELLI JAMES R000105395636
BISSON KEVIN M00012367266
CHAMILLARD GEORGE W000119244216
Couture Allen00019888841
Daniels Michael A00014038303
Farnsworth David E.00019901509
FLOOD DOUGLAS000113301523
Georges Stephanie00016222954
HULT ROBERT00012110724
JANA PARTNERS LLC0001159159577
JANA Partners Management, LP000199859734
JOHNSEN RUSSELL00011339201
KUPINSKY STUART000128959319
McCarthy Michelle M000173246132
MULLIN SHERMAN N00010540881
Munro Douglas000201170315
Nearhos Barry R00016712371
OBRIEN WILLIAM K00011874251
Radford Joel B00013818202
Ratner Steven000199511020
Ryan Terrence M000140025516
SALINE CRAIG A00012744093
SKALABRIN MARK F000121177229
Speicher Charles A000150122919
STEELE LEE C00012568542
THIBAUD DIDIER M C000121177145
Vitto Vincent00013777334
Wells Charles Roger IV00018919036
WISHNER RICHARD P00012568537

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.