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MRCY · MERCURY SYSTEMS INC

Everything on this page is public record — SEC Form 4 filings and congressional disclosures — alongside any INSIDER SCANNER research case for this company.

Open-market buys0
Open-market sells32
Research cases0
Last filing2026-10-21

Insider flow: Selling only — a count of disclosed transactions, not a rating or a recommendation.

Insider transaction timeline

Every reported transaction, positioned by trade date. Purchases sit above the axis, sales below; circle area is proportional to dollar value. No share-price line is drawn — this feed carries transaction prices only, and a price history inferred from them would imply market data the filings do not contain.

Open-market purchase Open-market sale
2026-08-17 — Ballhaus William L · sold 3,536 @ $109.95 2026-08-17 — Farnsworth David E. · sold 1,345 @ $109.95 2026-08-17 — KUPINSKY STUART · sold 1,195 @ $109.95 2026-08-17 — Ratner Steven · sold 1,084 @ $109.95 2026-08-17 — Munro Douglas · sold 404 @ $109.95 2026-08-18 — Ballhaus William L · sold 24,144 @ $111.36 2026-08-18 — Farnsworth David E. · sold 7,347 @ $111.36 2026-08-18 — KUPINSKY STUART · sold 1,178 @ $111.36 2026-08-18 — Ratner Steven · sold 1,971 @ $111.36 2026-08-18 — Munro Douglas · sold 494 @ $111.36 2026-08-19 — Ballhaus William L · sold 26,802 @ $100.31 2026-08-19 — Farnsworth David E. · sold 8,155 @ $100.31 2026-08-19 — KUPINSKY STUART · sold 1,308 @ $100.31 2026-08-19 — Ratner Steven · sold 2,187 @ $100.31 2026-08-19 — Munro Douglas · sold 548 @ $100.31 2026-08-20 — Ballhaus William L · sold 22,010 @ $97.67 2026-08-20 — Farnsworth David E. · sold 6,612 @ $97.67 2026-08-20 — Ratner Steven · sold 1,026 @ $97.67 2026-08-20 — Munro Douglas · sold 109 @ $97.67 2026-08-21 — Ballhaus William L · sold 204 @ $93.51 2026-08-21 — Ballhaus William L · sold 64,796 @ $92.40 2026-08-21 — KUPINSKY STUART · sold 1,000 @ $95.23 2026-08-21 — Ratner Steven · sold 356 @ $91.36 2026-08-24 — Ballhaus William L · sold 105,471 @ $89.47 2026-08-24 — Ballhaus William L · sold 2,738 @ $90.60 2026-08-25 — Ballhaus William L · sold 107,628 @ $87.09 2026-08-25 — Ballhaus William L · sold 3,448 @ $87.99 2026-08-26 — Ballhaus William L · sold 10,814 @ $89.74 2026-08-26 — Ballhaus William L · sold 38,276 @ $88.91 2026-09-03 — Ratner Steven · sold 4,000 @ $84.51 2026-09-21 — KUPINSKY STUART · sold 1,000 @ $86.52 2026-10-21 — KUPINSKY STUART · sold 1,000 @ $76.00
2026-08-172026-10-21

Insider participation

One row per insider, one cell per reported transaction, shaded by value. Repeat buying and activity clustered in time are visible at a glance.

Ballhaus William L Chairman, President & CEO, Director
KUPINSKY STUART EVP, CLO & Corp Sec
Ratner Steven EVP, CHRO
Farnsworth David E. EVP, CFO
Munro Douglas SVP, CAO
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The analysis built on top of these filings

The filings above are public record and stay public here. What an account adds for $MRCY is the reading of them — and for this company, that is what the list below says it is, no more.

  • Transaction timelineThe [{'transaction_date': '2026-10-21', 'insider_name': 'KUPINSKY STUART', 'insider_title': 'EVP, CLO & Corp Sec', 'transaction_type': 'Open-market sell', 'shares': 1000.0, 'price': 76.0, 'value': 76000.0, 'is_buy': False}, {'transaction_date': '2026-09-21', 'insider_name': 'KUPINSKY STUART', 'insider_title': 'EVP, CLO & Corp Sec', 'transaction_type': 'Open-market sell', 'shares': 1000.0, 'price': 86.52, 'value': 86520.0, 'is_buy': False}, {'transaction_date': '2026-09-03', 'insider_name': 'Ratner Steven', 'insider_title': 'EVP, CHRO', 'transaction_type': 'Open-market sell', 'shares': 4000.0, 'price': 84.5076, 'value': 338030.4, 'is_buy': False}, {'transaction_date': '2026-08-26', 'insider_name': 'Ballhaus William L', 'insider_title': 'Chairman, President & CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 10814.0, 'price': 89.74, 'value': 970448.36, 'is_buy': False}, {'transaction_date': '2026-08-26', 'insider_name': 'Ballhaus William L', 'insider_title': 'Chairman, President & CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 38276.0, 'price': 88.91, 'value': 3403119.16, 'is_buy': False}, {'transaction_date': '2026-08-25', 'insider_name': 'Ballhaus William L', 'insider_title': 'Chairman, President & CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 107628.0, 'price': 87.09, 'value': 9373322.52, 'is_buy': False}, {'transaction_date': '2026-08-25', 'insider_name': 'Ballhaus William L', 'insider_title': 'Chairman, President & CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 3448.0, 'price': 87.99, 'value': 303389.52, 'is_buy': False}, {'transaction_date': '2026-08-24', 'insider_name': 'Ballhaus William L', 'insider_title': 'Chairman, President & CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 105471.0, 'price': 89.47, 'value': 9436490.37, 'is_buy': False}, {'transaction_date': '2026-08-24', 'insider_name': 'Ballhaus William L', 'insider_title': 'Chairman, President & CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 2738.0, 'price': 90.6, 'value': 248062.8, 'is_buy': False}, {'transaction_date': '2026-08-21', 'insider_name': 'Ballhaus William L', 'insider_title': 'Chairman, President & CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 204.0, 'price': 93.51, 'value': 19076.04, 'is_buy': False}, {'transaction_date': '2026-08-21', 'insider_name': 'Ballhaus William L', 'insider_title': 'Chairman, President & CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 64796.0, 'price': 92.4, 'value': 5987150.4, 'is_buy': False}, {'transaction_date': '2026-08-21', 'insider_name': 'KUPINSKY STUART', 'insider_title': 'EVP, CLO & Corp Sec', 'transaction_type': 'Open-market sell', 'shares': 1000.0, 'price': 95.23, 'value': 95230.0, 'is_buy': False}, {'transaction_date': '2026-08-21', 'insider_name': 'Ratner Steven', 'insider_title': 'EVP, CHRO', 'transaction_type': 'Open-market sell', 'shares': 356.0, 'price': 91.36, 'value': 32524.16, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Ballhaus William L', 'insider_title': 'Chairman, President & CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 22010.0, 'price': 97.67, 'value': 2149716.7, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Farnsworth David E.', 'insider_title': 'EVP, CFO', 'transaction_type': 'Open-market sell', 'shares': 6612.0, 'price': 97.67, 'value': 645794.04, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Ratner Steven', 'insider_title': 'EVP, CHRO', 'transaction_type': 'Open-market sell', 'shares': 1026.0, 'price': 97.67, 'value': 100209.42, 'is_buy': False}, {'transaction_date': '2026-08-20', 'insider_name': 'Munro Douglas', 'insider_title': 'SVP, CAO', 'transaction_type': 'Open-market sell', 'shares': 109.0, 'price': 97.67, 'value': 10646.03, 'is_buy': False}, {'transaction_date': '2026-08-19', 'insider_name': 'Ballhaus William L', 'insider_title': 'Chairman, President & CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 26802.0, 'price': 100.31, 'value': 2688508.62, 'is_buy': False}, {'transaction_date': '2026-08-19', 'insider_name': 'Farnsworth David E.', 'insider_title': 'EVP, CFO', 'transaction_type': 'Open-market sell', 'shares': 8155.0, 'price': 100.31, 'value': 818028.05, 'is_buy': False}, {'transaction_date': '2026-08-19', 'insider_name': 'KUPINSKY STUART', 'insider_title': 'EVP, CLO & Corp Sec', 'transaction_type': 'Open-market sell', 'shares': 1308.0, 'price': 100.31, 'value': 131205.48, 'is_buy': False}, {'transaction_date': '2026-08-19', 'insider_name': 'Ratner Steven', 'insider_title': 'EVP, CHRO', 'transaction_type': 'Open-market sell', 'shares': 2187.0, 'price': 100.31, 'value': 219377.97, 'is_buy': False}, {'transaction_date': '2026-08-19', 'insider_name': 'Munro Douglas', 'insider_title': 'SVP, CAO', 'transaction_type': 'Open-market sell', 'shares': 548.0, 'price': 100.31, 'value': 54969.88, 'is_buy': False}, {'transaction_date': '2026-08-18', 'insider_name': 'Ballhaus William L', 'insider_title': 'Chairman, President & CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 24144.0, 'price': 111.36, 'value': 2688675.84, 'is_buy': False}, {'transaction_date': '2026-08-18', 'insider_name': 'Farnsworth David E.', 'insider_title': 'EVP, CFO', 'transaction_type': 'Open-market sell', 'shares': 7347.0, 'price': 111.36, 'value': 818161.92, 'is_buy': False}, {'transaction_date': '2026-08-18', 'insider_name': 'KUPINSKY STUART', 'insider_title': 'EVP, CLO & Corp Sec', 'transaction_type': 'Open-market sell', 'shares': 1178.0, 'price': 111.36, 'value': 131182.08, 'is_buy': False}, {'transaction_date': '2026-08-18', 'insider_name': 'Ratner Steven', 'insider_title': 'EVP, CHRO', 'transaction_type': 'Open-market sell', 'shares': 1971.0, 'price': 111.36, 'value': 219490.56, 'is_buy': False}, {'transaction_date': '2026-08-18', 'insider_name': 'Munro Douglas', 'insider_title': 'SVP, CAO', 'transaction_type': 'Open-market sell', 'shares': 494.0, 'price': 111.36, 'value': 55011.84, 'is_buy': False}, {'transaction_date': '2026-08-17', 'insider_name': 'Ballhaus William L', 'insider_title': 'Chairman, President & CEO, Director', 'transaction_type': 'Open-market sell', 'shares': 3536.0, 'price': 109.95, 'value': 388783.2, 'is_buy': False}, {'transaction_date': '2026-08-17', 'insider_name': 'Farnsworth David E.', 'insider_title': 'EVP, CFO', 'transaction_type': 'Open-market sell', 'shares': 1345.0, 'price': 109.95, 'value': 147882.75, 'is_buy': False}, {'transaction_date': '2026-08-17', 'insider_name': 'KUPINSKY STUART', 'insider_title': 'EVP, CLO & Corp Sec', 'transaction_type': 'Open-market sell', 'shares': 1195.0, 'price': 109.95, 'value': 131390.25, 'is_buy': False}, {'transaction_date': '2026-08-17', 'insider_name': 'Ratner Steven', 'insider_title': 'EVP, CHRO', 'transaction_type': 'Open-market sell', 'shares': 1084.0, 'price': 109.95, 'value': 119185.8, 'is_buy': False}, {'transaction_date': '2026-08-17', 'insider_name': 'Munro Douglas', 'insider_title': 'SVP, CAO', 'transaction_type': 'Open-market sell', 'shares': 404.0, 'price': 109.95, 'value': 44419.8, 'is_buy': False}] reported transactions plotted over the window rather than listed, so concentration is visible.

Not available for MRCY today: no reported open-market purchases in this window, so there is no insider cost basis to compute; no research case — nothing here has cleared the scoring threshold. Both appear on this page on their own if that changes.

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Not financial advice. This page reports public filings and past research output. It is not a recommendation to buy or sell, and no price target here is a prediction. Trade at your own risk.