SEC filingsOct 12, 2026 to Oct 19, 2026: insiders reported 840 purchases and sales across 212 companies.840 insider purchases and sales in 7 daysSee the filings →
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Company profile

MRCY

Mercury Systems Inc.
NASDAQIndustrials

Latest close: 74.27 USD · Oct 16, 2026 · 1 year · split-adjusted

On the price, the facts of the public record■Insider buy□Insider sell◇Significant stake declared (13D)●Results filed
With an account, also○dividends▲splits◌next earningswith an account

End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.

Latest on record

The most recent facts, as filed.

Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.

  1. Sep 21, 2026Reported sale · Form 4STUART KUPINSKY, EVP, CLO & Corp Sec · $86.5KOpen the filing ↗
  2. Sep 21, 2026Notice of sale · Form 144KUPINSKY STUART · Officer · $86.5KOpen the filing ↗
  3. Sep 18, 2026Material event · 8-KFiled by the company itself.Open the filing ↗

In numbers

What this profile holds, counted.

Closes · 1 year250
SEC filings on record1,74116 flagged findings
Reported transactions (Form 4)49since Aug 17, 2023 · and 11 other holdings
Corporate events (8-K)30since Feb 28, 2022

What the record says

Description, identity and filings, each with its source.

Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.

What the company does

defense-related information technology company

Source: Wikidata (CC0 1.0) · copied on Sep 3, 2026 · may not reflect recent changes.

SEC topics

Regulatory history

Topics detected in its SEC reports, with the original excerpt.

Each topic is assigned by a classifier over the full filing; the excerpts show where it was detected and are not always enough to verify it. Open the filing to read it in full.

  • 2026-05-05capital return (buybacks/dividends)recentOpen filing ↗
    “…inability of the counterparty to meet the terms of their contracts) are generally limited to the amounts, if any, by which the…”
    +1 more passage from the same document
    • “…to the amounts, if any, by which the counterparty obligations under the contracts exceed the obligations of the Company to the…”
  • 2026-02-03capital return (buybacks/dividends)recentOpen filing ↗
    “…of the counterparty to meet the terms of their contracts) are generally limited to the amounts, if any, by which the…”
    +1 more passage from the same document
    • “…to the amounts, if any, by which the counterparty obligations under the contracts exceed the obligations of the Company to the…”

Original excerpts from SEC filings, untranslated. Not advice and not a prediction.

SEC record

SEC dossier

What this company has filed with the SEC, in plain language.

The 25 most recent filings (of 1,741)

Everything filed

Every SEC filing, newest first, with what it is. Below, each type with its own explanation.

  • Insider transaction · 2 Form 4 filings newshow all 2hide
  • Sep 21, 26Form 144 ↗Notice of proposed sale
  • Sep 18, 268-K ↗Current report · Other events
  • Sep 17, 26DEF 14A ↗Shareholder meeting and votes
  • Sep 16, 268-K ↗Current report · Entered a material agreement
  • Insider transaction · 5 Form 4/A filingsshow all 5hide
  • Sep 8, 26Form 4 ↗Insider transaction
  • Sep 3, 26Form 144 ↗Notice of proposed sale
  • Aug 27, 26Form 4 ↗Insider transaction
  • Notice of proposed sale · 2 Form 144 filingsshow all 2hide
  • Insider transaction · 3 Form 4 filingsshow all 3hide
  • Notice of proposed sale · 4 Form 144 filingsshow all 4hide
  • Insider transaction · 2 Form 4 filingsshow all 2hide

1,741 filings on record, the oldest from Jan 29, 98.

Listing the 25 most recent filings of the 1,741 on record.

8-Ks, explained

Stress10Structure57Governance70
  • Sep 16, 26StructureEntered a material agreement+2 more in the same filing8-K 1.01 ↗
  • Nov 4, 25StructureEntered a material agreement+4 more in the same filing8-K 1.01 ↗
  • Oct 28, 25GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
  • Apr 1, 25GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
  • Feb 4, 25StressRestructuring plan with committed costs+2 more in the same filing8-K 2.05 ↗
  • Jan 6, 25GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
  • Oct 28, 24GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
  • Aug 13, 24StructureTook on a new financial obligation+3 more in the same filing8-K 2.03 ↗
  • Jun 18, 24StressRestructuring plan with committed costs+2 more in the same filing8-K 2.05 ↗
  • Feb 8, 24GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
  • Jan 17, 24StressRestructuring plan with committed costs+3 more in the same filing8-K 2.05 ↗
  • Nov 15, 23GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗

11 older filings not shown · The record reaches back to Nov 18, 04.

Notable in the record

Stress disclosures older than the timeline above. They are individual events from the record, not a complete timeline: there may be more between them.

  • Aug 15, 23StressRestructuring plan with committed costs+4 more in the same filing8-K 2.05 ↗
  • Aug 3, 21StressRestructuring plan with committed costs+3 more in the same filing8-K 2.05 ↗
  • Feb 1, 18StressA debt obligation was accelerated+3 more in the same filing8-K 2.04 ↗
  • Jul 26, 07StressWrite-down of assets+2 more in the same filing8-K 2.06 ↗
  • May 3, 07StressRestructuring plan with committed costs+1 more in the same filing8-K 2.05 ↗
  • Jul 27, 06StressRestructuring plan with committed costs+3 more in the same filing8-K 2.05 ↗
  • Mar 15, 06StressRestructuring plan with committed costs+1 more in the same filing8-K 2.05 ↗

The full record holds 10 stress filings.

Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.

Ownership and control

Schedule 13D: stake and stated purpose

Filed by holders above 5% of a share class who cannot use the short form. It includes the investor's stated purpose: read it before assuming they seek influence.

Schedule 13G: short-form filing

The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.

Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.

Sale intention announced

On Sep 21, KUPINSKY STUART filed notice of intent to sell up to $87K. It is filed under a scheduled plan (10b5-1), arranged in advance.

A notice is not a sale: it may not go ahead, may happen in part, or at a different price.

After the notice, they sold $87K on Sep 21, per their Form 4. That is 100% of the shares announced so far, and the window is still open.

View notice (Form 144) ↗+9 more recent notices · 8 with a later sale

SEC record

Insider transactions

Buys and sells reported by officers, directors and major shareholders on SEC Form 4.

Buys and sells

  • Sep 21, 26Sell$87KSTUART KUPINSKYEVP, CLO & Corp Sec↗
  • Sep 3, 26Sell$338KSteven RatnerEVP, CHRO↗
  • Aug 26, 26Sell$3.4MWilliam L BallhausChairman, President & CEO↗
  • Aug 26, 26Sell$970KWilliam L BallhausChairman, President & CEO↗
  • Aug 25, 26Sell$9.4MWilliam L BallhausChairman, President & CEO↗
  • Aug 25, 26Sell$303KWilliam L BallhausChairman, President & CEO↗
  • Aug 24, 26Sell$9.4MWilliam L BallhausChairman, President & CEO↗
  • Aug 24, 26Sell$248KWilliam L BallhausChairman, President & CEO↗
  • Aug 21, 26Sell$6.0MWilliam L BallhausChairman, President & CEO↗
  • Aug 21, 26Sell$19KWilliam L BallhausChairman, President & CEO↗
  • Aug 21, 26Sell$95KSTUART KUPINSKYEVP, CLO & Corp Sec↗
  • Aug 21, 26Sell$33KSteven RatnerEVP, CHRO↗

There are 19 more transactions in this stretch.

Stock compensation, tax and giftsshow the 9 other transactionshide

Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.

  • Oct 15, 26Compensationamount n/aBarry R Nearhos↗
  • Aug 26, 26Compensation$2.9MWilliam L BallhausChairman, President & CEO↗
  • Aug 25, 26Compensation$6.6MWilliam L BallhausChairman, President & CEO↗
  • Aug 24, 26Compensation$5.9MWilliam L BallhausChairman, President & CEO↗
  • Aug 24, 26Compensation$488KWilliam L BallhausChairman, President & CEO↗
  • Aug 21, 26Compensation$3.9MWilliam L BallhausChairman, President & CEO↗
  • Aug 17, 26Compensationamount n/aWilliam L BallhausChairman, President & CEO↗
  • Aug 17, 26Compensationamount n/aDavid E. FarnsworthEVP, CFO↗
  • Aug 17, 26Compensationamount n/aSTUART KUPINSKYEVP, CLO & Corp Sec↗

The full record holds 235 transactions and goes back to Feb 15, 23.

Its sector and its market

Mercury Systems Inc. among Industrials companies

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Coverage

What sits behind this page.

Where each figure comes from and how far it reaches.

Prices
End-of-day closes provided by Twelve Data. One close per session; not real time. Closes adjusted for splits.
Series quality
250 clean closes in the period.
SEC records
1,741 documents on file, from Jan 29, 1998 to Oct 16, 2026.
Company description
Wikidata, read on Sep 3, 2026.
This page
Generated on Oct 19, 2026; refreshed through the day.

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No. It is one close per session, from the provider and with the date shown on the profile; it does not update during the trading day.

Which SEC documents appear here?

Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.

Why does a European company show no SEC records?

It depends on the company: some European issuers file a 20-F or 6-K with the SEC and others don't. The profile shows whatever is on record; when there is nothing, it says so rather than guessing why. Europe does not yet have a common filing archive like EDGAR in the United States. The EU will open its own, ESAP, in July 2027 (managers' transactions arrive in January 2028), and we plan to add it once it is available.

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