Mercury Systems Inc. Insider Trading

MRCY

Last 12 months

Insiders sold $40.1M and bought nothing on the open market.

1% of the selling was scheduled in advance under 10b5-1 plans. Chairman, President & CEO William L Ballhaus sold $15.7M on Aug 24, 36% of their stake, outside a plan. The last open-market buy by an executive or director was in Feb 2024.

Net open-market

−$40.1M

0 buys · 21 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

0 / 8

executives and directors

Last open-market buy

Feb 2024

Feb 12, 2024

Get an email when MRCY's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 21	Stuart Kupinsky EVP, CLO & Corp Sec	Sold10b5-1 plan	1,000	$76.00	76K	1.6%	Form 4
Sep 21	Stuart Kupinsky EVP, CLO & Corp Sec	Sold10b5-1 plan	1,000	$86.52	87K	1.6%	Form 4
Sep 3	Steven Ratner EVP, CHRO	SoldNo plan	4,000	$84.51	338K	17%	Form 4
Aug 25 – 26	William L Ballhaus Chairman, President & CEO	SoldNo plan 4 parts	160,166	$87.72 average	$14.1M	30%	Form 4
Aug 21 – 24	William L Ballhaus Chairman, President & CEO	SoldNo plan 4 parts	173,209	$90.59 average	$15.7M	36%	Form 4
Aug 21	Steven Ratner EVP, CHRO	SoldNo plan	356	$91.36	33K	1.5%	Form 4
Aug 21	Stuart Kupinsky EVP, CLO & Corp Sec	Sold10b5-1 plan	1,000	$95.23	95K	1.7%	Form 4
Aug 19 – 20	Douglas Munro SVP, CAO	SoldNo plan 2 parts	657	$99.87 average	66K	4.7%	Form 4
Aug 19 – 20	Steven Ratner EVP, CHRO	SoldNo plan 2 parts	3,213	$99.47 average	320K	12%	Form 4
Aug 19 – 20	David E. Farnsworth EVP, CFO	SoldNo plan 2 parts	14,767	$99.13 average	$1.46M	11%	Form 4
Aug 19 – 20	William L Ballhaus Chairman, President & CEO	SoldNo plan 2 parts	48,812	$99.12 average	$4.84M	17%	Form 4
Aug 19	Stuart Kupinsky EVP, CLO & Corp Sec	SoldNo plan	1,308	$100.31	131K	2.2%	Form 4
May 26	Howard L Lance Director	SoldNo plan 2 parts	9,250	$99.75 average	923K	25%	Form 4
May 12	Orlando D Carvalho Director	SoldNo plan	7,000	$89.36	626K	12%	Form 4
May 11	Steven Ratner EVP, CHRO	SoldNo plan	2,000	$92.46	185K	5.8%	Form 4
Apr 16	David E. Farnsworth EVP, CFO	SoldNo plan	3,625	$84.87	308K	2.2%	Form 4
Mar 2 – 4	Jana Partners Management, LP Large holder	SoldNo plan 3 parts	452,057	$91.61 average	$41.4M	5.1%	Form 4
Feb 25	Howard L Lance Director	SoldNo plan	4,832	$88.98	430K	12%	Form 4
Feb 17	Stuart Kupinsky EVP, CLO & Corp Sec	SoldNo plan	2,287	$83.56	191K	3.2%	Form 4
Feb 17	Douglas Munro SVP, CAO	SoldNo plan	582	$83.56	49K	3.8%	Form 4
Feb 9	Jana Partners Management, LP Large holder	SoldNo plan	400,000	$81.00	$32.4M	8.1%	Form 4
Nov 12, 2025	Douglas Munro SVP, CAO	SoldNo plan	1,329	$73.42	98K	8.2%	Form 4
Nov 7, 2025	Debora A Plunkett Director	SoldNo plan	1,700	$73.99	126K	9.2%	Form 4
Nov 6, 2025	Jana Partners Management, LP Large holder	SoldNo plan	1,000,000	$75.45	$75.5M	17%	Form 4
Sep 16, 2025	Douglas Munro VP, CAO	SoldNo plan	67	$73.40	5K	0.4%	Form 4
Aug 20, 2025	Steven Ratner EVP, CHRO	SoldNo plan	7,000	$63.76	446K	17%	Form 4
Aug 18, 2025 – Aug 19, 2025	Douglas Munro VP, CAO	SoldNo plan 2 parts	739	$65.47 average	48K	4.4%	Form 4
Aug 18, 2025 – Aug 19, 2025	Steven Ratner EVP, CHRO	SoldNo plan 2 parts	3,416	$65.47 average	224K	7.7%	Form 4
Aug 18, 2025 – Aug 19, 2025	Stuart Kupinsky EVP, CLO & Corp Sec	SoldNo plan 2 parts	2,402	$65.47 average	157K	3.3%	Form 4
Aug 18, 2025 – Aug 19, 2025	David E. Farnsworth EVP, CFO	SoldNo plan 2 parts	14,911	$65.47 average	976K	8.4%	Form 4
Aug 18, 2025 – Aug 19, 2025	William L Ballhaus Chairman, President & CEO	SoldNo plan 2 parts	23,445	$65.37 average	$1.53M	5.8%	Form 4
Aug 13, 2025	Jana Partners Management, LP Large holder	SoldNo plan	797,000	$65.42	$52.1M	12%	Form 4
Jun 16, 2025	Steven Ratner EVP, CHRO	SoldNo plan	1,839	$53.48	98K	5.0%	Form 4
May 14, 2025	Douglas Munro VP, CAO	SoldNo plan 2 parts	2,419	$45.39 average	110K	15%	Form 4
May 8, 2025 – May 9, 2025	Jana Partners Management, LP Large holder	SoldNo plan 2 parts	188,152	$46.06 average	$8.67M	2.7%	Form 4
May 8, 2025	Steven Ratner EVP, CHRO	SoldNo plan 2 parts	4,217	$47.57 average	201K	7.0%	Form 4
Feb 18, 2025	Stuart Kupinsky EVP, CLO & Corp Sec	SoldNo plan	2,377	$44.12	105K	3.6%	Form 4
Feb 18, 2025	Douglas Munro VP, CAO	SoldNo plan	595	$44.12	26K	3.7%	Form 4
Feb 18, 2025	Charles Roger Wells IV EVP, COO	SoldNo plan	2,342	$44.12	103K	2.4%	Form 4
Nov 18, 2024	Charles Roger Wells IV EVP, COO	SoldNo plan	1,527	$38.80	59K	1.3%	Form 4

Oct 2110b5-1 plan
Stuart Kupinsky
EVP, CLO & Corp Sec · sold 1,000 at $76.00
76K
1.6% of stake
Sep 2110b5-1 plan
Stuart Kupinsky
EVP, CLO & Corp Sec · sold 1,000 at $86.52
87K
1.6% of stake
Sep 3No plan
Steven Ratner
EVP, CHRO · sold 4,000 at $84.51
338K
17% of stake
Aug 25 – 26No plan
William L Ballhaus
Chairman, President & CEO · sold 160,166 at avg $87.72
$14.1M
30% of stake
Aug 21 – 24No plan
William L Ballhaus
Chairman, President & CEO · sold 173,209 at avg $90.59
$15.7M
36% of stake
Aug 21No plan
Steven Ratner
EVP, CHRO · sold 356 at $91.36
33K
1.5% of stake
Aug 2110b5-1 plan
Stuart Kupinsky
EVP, CLO & Corp Sec · sold 1,000 at $95.23
95K
1.7% of stake
Aug 19 – 20No plan
Douglas Munro
SVP, CAO · sold 657 at avg $99.87
66K
4.7% of stake
Aug 19 – 20No plan
Steven Ratner
EVP, CHRO · sold 3,213 at avg $99.47
320K
12% of stake
Aug 19 – 20No plan
David E. Farnsworth
EVP, CFO · sold 14,767 at avg $99.13
$1.46M
11% of stake
Aug 19 – 20No plan
William L Ballhaus
Chairman, President & CEO · sold 48,812 at avg $99.12
$4.84M
17% of stake
Aug 19No plan
Stuart Kupinsky
EVP, CLO & Corp Sec · sold 1,308 at $100.31
131K
2.2% of stake
May 26No plan
Howard L Lance
Director · sold 9,250 at avg $99.75
923K
25% of stake
May 12No plan
Orlando D Carvalho
Director · sold 7,000 at $89.36
626K
12% of stake
May 11No plan
Steven Ratner
EVP, CHRO · sold 2,000 at $92.46
185K
5.8% of stake
Apr 16No plan
David E. Farnsworth
EVP, CFO · sold 3,625 at $84.87
308K
2.2% of stake
Mar 2 – 4No plan
Jana Partners Management, LP
Large holder · sold 452,057 at avg $91.61
$41.4M
5.1% of stake
Feb 25No plan
Howard L Lance
Director · sold 4,832 at $88.98
430K
12% of stake
Feb 17No plan
Stuart Kupinsky
EVP, CLO & Corp Sec · sold 2,287 at $83.56
191K
3.2% of stake
Feb 17No plan
Douglas Munro
SVP, CAO · sold 582 at $83.56
49K
3.8% of stake
Feb 9No plan
Jana Partners Management, LP
Large holder · sold 400,000 at $81.00
$32.4M
8.1% of stake
Nov 12, 2025No plan
Douglas Munro
SVP, CAO · sold 1,329 at $73.42
98K
8.2% of stake
Nov 7, 2025No plan
Debora A Plunkett
Director · sold 1,700 at $73.99
126K
9.2% of stake
Nov 6, 2025No plan
Jana Partners Management, LP
Large holder · sold 1,000,000 at $75.45
$75.5M
17% of stake
Sep 16, 2025No plan
Douglas Munro
VP, CAO · sold 67 at $73.40
5K
0.4% of stake
Aug 20, 2025No plan
Steven Ratner
EVP, CHRO · sold 7,000 at $63.76
446K
17% of stake
Aug 18, 2025 – Aug 19, 2025No plan
Douglas Munro
VP, CAO · sold 739 at avg $65.47
48K
4.4% of stake
Aug 18, 2025 – Aug 19, 2025No plan
Steven Ratner
EVP, CHRO · sold 3,416 at avg $65.47
224K
7.7% of stake
Aug 18, 2025 – Aug 19, 2025No plan
Stuart Kupinsky
EVP, CLO & Corp Sec · sold 2,402 at avg $65.47
157K
3.3% of stake
Aug 18, 2025 – Aug 19, 2025No plan
David E. Farnsworth
EVP, CFO · sold 14,911 at avg $65.47
976K
8.4% of stake
Aug 18, 2025 – Aug 19, 2025No plan
William L Ballhaus
Chairman, President & CEO · sold 23,445 at avg $65.37
$1.53M
5.8% of stake
Aug 13, 2025No plan
Jana Partners Management, LP
Large holder · sold 797,000 at $65.42
$52.1M
12% of stake
Jun 16, 2025No plan
Steven Ratner
EVP, CHRO · sold 1,839 at $53.48
98K
5.0% of stake
May 14, 2025No plan
Douglas Munro
VP, CAO · sold 2,419 at avg $45.39
110K
15% of stake
May 8, 2025 – May 9, 2025No plan
Jana Partners Management, LP
Large holder · sold 188,152 at avg $46.06
$8.67M
2.7% of stake
May 8, 2025No plan
Steven Ratner
EVP, CHRO · sold 4,217 at avg $47.57
201K
7.0% of stake
Feb 18, 2025No plan
Stuart Kupinsky
EVP, CLO & Corp Sec · sold 2,377 at $44.12
105K
3.6% of stake
Feb 18, 2025No plan
Douglas Munro
VP, CAO · sold 595 at $44.12
26K
3.7% of stake
Feb 18, 2025No plan
Charles Roger Wells IV
EVP, COO · sold 2,342 at $44.12
103K
2.4% of stake
Nov 18, 2024No plan
Charles Roger Wells IV
EVP, COO · sold 1,527 at $38.80
59K
1.3% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch MRCY, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Held by ETFs

MRCY is in 100 US ETFs. The largest of them, with MRCY's weight in each:

Spot a number that looks wrong? Check it in MRCY's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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