Public ownership evidence

Mercury Systems Inc. (MRCY) Ownership Disclosures

Read MRCY insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Mercury Systems Inc.: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-09-23
Trade date
2026-09-21
Reporting owners
KUPINSKY STUART
Code
S
Shares
1,000
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0001049521-26-000083
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read MRCY fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read MRCY fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity
2026-09-232026-09-21KUPINSKY STUARTS1,000Not reported
2026-09-152026-08-17Ratner StevenA5,187Not reported
2026-09-152026-08-17Munro DouglasA2,882Not reported
2026-09-152026-08-17KUPINSKY STUARTA5,619Not reported
2026-09-152026-08-17Farnsworth David E.A8,212Not reported
2026-09-152026-08-17Ballhaus William LA23,629Not reported
2026-09-092026-09-03Ratner StevenS4,000Not reported
2026-08-282026-08-26Ballhaus William LS10,814Not reported
2026-08-282026-08-26Ballhaus William LS38,276Not reported
2026-08-282026-08-25Ballhaus William LS3,448Not reported
2026-08-282026-08-25Ballhaus William LS107,628Not reported
2026-08-262026-08-21Ratner StevenS356Not reported
2026-08-262026-08-21KUPINSKY STUARTS1,000Not reported
2026-08-262026-08-24Ballhaus William LS2,738Not reported
2026-08-262026-08-24Ballhaus William LS105,471Not reported
2026-08-262026-08-21Ballhaus William LS204Not reported
2026-08-262026-08-21Ballhaus William LS64,796Not reported
2026-08-222026-08-20Munro DouglasS109Not reported
2026-08-222026-08-19Munro DouglasS548Not reported
2026-08-222026-08-20Ratner StevenS1,026Not reported
2026-08-222026-08-19Ratner StevenS2,187Not reported
2026-08-222026-08-19KUPINSKY STUARTS1,308Not reported
2026-08-222026-08-20Farnsworth David E.S6,612Not reported
2026-08-222026-08-19Farnsworth David E.S8,155Not reported
2026-08-222026-08-20Ballhaus William LS22,010Not reported
2026-08-222026-08-19Ballhaus William LS26,802Not reported
2026-08-202026-08-18Munro DouglasS494Not reported
2026-08-202026-08-17Munro DouglasS404Not reported
2026-08-202026-08-18Ratner StevenS1,971Not reported
2026-08-202026-08-17Ratner StevenS1,084Not reported
2026-08-202026-08-18KUPINSKY STUARTS1,178Not reported
2026-08-202026-08-17KUPINSKY STUARTS1,195Not reported
2026-08-202026-08-18Farnsworth David E.S7,347Not reported
2026-08-202026-08-17Farnsworth David E.S1,345Not reported
2026-08-202026-08-18Ballhaus William LS24,144Not reported
2026-08-202026-08-17Ballhaus William LS3,536Not reported
2026-07-212026-07-16Nearhos Barry RA170Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

Cornerstone Financial Management LLC2026-06-302026-08-2911$1,346None
Advisors Asset Management, Inc.2021-12-312026-08-2817,199$946,977None
Advisors Asset Management, Inc.2022-12-312026-08-2817,801$796,417None
Advisors Asset Management, Inc.2020-06-302026-08-2836,770$2,892,328None
Advisors Asset Management, Inc.2022-06-302026-08-2819,329$1,243,000None
Advisors Asset Management, Inc.2021-09-302026-08-2820,635$979,000None
Corient Private Wealth LP2026-06-302026-08-2811,338$1,386,979None
Redwood Investment Management, LLC2024-12-312026-08-2857,149$2,400,000None
Advisors Asset Management, Inc.2022-09-302026-08-2718,120$736,000None
Advisors Asset Management, Inc.2020-12-312026-08-2725,614$2,256,000None
Advisors Asset Management, Inc.2022-03-312026-08-2719,503$1,256,968None
Advisors Asset Management, Inc.2023-06-302026-08-2713,894$480,593None
Advisors Asset Management, Inc.2023-09-302026-08-278,271$306,771None
Advisors Asset Management, Inc.2023-03-312026-08-2714,459$739,144None
Advisors Asset Management, Inc.2021-03-312026-08-2723,073$1,630,107None
Advisors Asset Management, Inc.2021-06-302026-08-2722,323$1,480,000None
Advisors Asset Management, Inc.2020-09-302026-08-2730,227$2,341,383None
Advisors Asset Management, Inc.2023-12-312026-08-277,534$275,518None
Advisors Asset Management, Inc.2019-12-312026-08-2631,276$2,161,484None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2562,374$7,630,211None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-257,630,211$62,374,000None
Advisors Asset Management, Inc.2020-03-312026-08-2234,606$2,468,792None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-203,111$380,569None
Beacon Pointe Advisors, LLC2026-06-302026-08-193,037$371,517None
Advisors Asset Management, Inc.2019-03-312026-08-1926,735$1,713,179None
Advisors Asset Management, Inc.2019-09-302026-08-1932,785$2,661,158None
Advisors Asset Management, Inc.2019-06-302026-08-1929,178$2,052,672None
Ensign Peak Advisors, Inc2026-03-312026-08-195,152$375,632None
Ensign Peak Advisors, Inc2025-12-312026-08-195,152$376,148None
Ensign Peak Advisors, Inc2025-09-302026-08-1912,052$932,825None
Fulcrum Asset Management LLP2026-06-302026-08-1952$5,731None
Corient Private Wealth LP2026-06-302026-08-1810,745$1,314,436None
Empowered Funds, LLC2026-06-302026-08-181,905$233,039None
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO2026-06-302026-08-18353$43,182None
CENTAURUS FINANCIAL, INC.2026-06-302026-08-183,390$415,000None
Graham Capital Management, L.P.2026-06-302026-08-159,800$1,198,834None
SEI INVESTMENTS CO2026-06-302026-08-15243,227$29,753,959None
SEI INVESTMENTS CO2026-06-302026-08-1518,485$2,261,130None
JPL Wealth Management, LLC2026-06-302026-08-151$123None
Rafferty Asset Management, LLC2026-06-302026-08-159,870$1,207,397None
Basecamp Wealth Advisors LLC2026-06-302026-08-15141$17,249None
Polymer Capital Management (US) LLC2026-06-302026-08-152,313$282,949None
T. Rowe Price Investment Management, Inc.2026-06-302026-08-151,595,711$195,204,000None
Candelo Capital Management LP2026-06-302026-08-1554,060$6,613,160None
XTX Topco Ltd2026-06-302026-08-153,027$370,293None
Prestige Wealth Management Group LLC2026-06-302026-08-1545$5,505None
SYON CAPITAL LLC2026-06-302026-08-152,777$339,710None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15627,581$76,771,984None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15627,581$76,771,984None
Defiance ETFs, LLC2026-06-302026-08-1519,757$2,431,099None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Corient Private Wealth LP ↗Redwood Investment Management, LLC ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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