Leaderboard › Companies with space divisions

Mercury Systems, Inc.

Mercury Systems (MRCY) has a market cap of US$5.1B as of Oct 2, 2026 close, ranked #12 by whole market cap among companies with space divisions. How it is built

MRCY on Nasdaq · USA · Only part of this company is space; it is ranked separately and never enters pure-play or segment totals.

Market cap

US$5.1B

Priced on Nasdaq (MRCY) · as of Oct 2, 2026 close

Shares outstanding

60.1M

Shares as of Jul 31, 2026 · 10-K filed Aug 18, 2026 (SEC EDGAR)

Coverage

Companies with space divisions

Ranked by whole market cap; only part of each company is space.

Next event

—

Nothing on the calendar yet

Price · Nasdaq (MRCY)

as of Oct 2, 2026End of day

US$84.80▲ +0.8%

Regular-session last sale across US venues on Oct 2, 2026, not the official closing auction price.

Oct 2, 2026 · US$84.80

Change: ▲ +4.4%
High: US$126.25 Jul 2, 2026
Low: US$66.165 Nov 20, 2025
Range: Oct 1, 2025 to Oct 2, 2026 · 253 sessions

Regular-session last sales, as traded. Prices are not adjusted for share splits.

What they do

as of Oct 3, 2026

Mercury Systems makes processing, radio-frequency and mission-computing electronics for defence and aerospace customers, including radiation-tolerant electronics for space. It is headquartered in Andover, Massachusetts. Its shares trade on Nasdaq as MRCY. Only part of the company is space.

A plain description of the business, reviewed Oct 3, 2026. Drawn from: Form 10-K and 10-Q filings (CIK 0001049521). Corrections: see corrections.

Recent filings and events

as of Sep 21, 2026

Sep 21, 2026144Notice of proposed sale · SEC EDGAR
Sep 18, 20268-KItem 8.01 · SEC EDGARAI summaryMercury Systems, Inc. reported that on September 9 and September 15, 2026, the Essex County Superior Court granted preliminary approval of settlements in two stockholder derivative actions: Jones v. Aslett, et al. and McKinnon v. Aslett, et al. The parties agreed to the settlement on July 9, 2026.
Sep 17, 2026ARSForm ARS · SEC EDGAR
Sep 17, 2026DEF 14AProxy statement · SEC EDGAR
Sep 16, 20268-KItems 1.01, 7.01, 9.01 · SEC EDGARAI summaryMercury Systems, Inc. extended the employment agreement of Chairman and Chief Executive Officer William L. Ballhaus through August 15, 2030, according to Amendment No. 2 approved by independent directors on September 15, 2026. The company reaffirmed financial guidance issued on August 18, 2026.
Sep 3, 2026144Notice of proposed sale · SEC EDGAR
Aug 26, 2026144Notice of proposed sale · SEC EDGAR
Aug 25, 2026144Notice of proposed sale · SEC EDGAR
Aug 24, 2026144Notice of proposed sale · SEC EDGAR
Aug 24, 2026144Notice of proposed sale · SEC EDGAR

Sources: SEC EDGAR. All filings on EDGAR. Insider forms (Form 4) are in the table below. Dated events are on the calendar and the launch manifest. Summaries of 8-Ks and registration statements are written by an AI model from the filing's own text and state only what it says; the filing is the record.

Insider transactions (Form 4)

Last 10 insider transactions reported on Form 4
Date	Reporting person	Transaction	Shares	Price	Owned after	Filing
Sep 21, 2026	KUPINSKY STUARTEVP, CLO & Corp Sec	Open-market or private sale	−1,000	US$86.52	60,971	Form 4 filed Sep 23, 2026
Sep 3, 2026	Ratner StevenEVP, CHRO	Open-market or private sale	−4,000	US$84.5076	19,275	Form 4 filed Sep 8, 2026
Aug 26, 2026	Ballhaus William LDirector, Chairman, President & CEO	Exercise or conversion of a derivative security	+68,476	US$43.00	410,912	Form 4 filed Aug 27, 2026
Aug 26, 2026	Ballhaus William LDirector, Chairman, President & CEO	Open-market or private sale	−38,276	US$88.913	372,636	Form 4 filed Aug 27, 2026
Aug 26, 2026	Ballhaus William LDirector, Chairman, President & CEO	Open-market or private sale	−10,814	US$89.744	361,822	Form 4 filed Aug 27, 2026
Aug 25, 2026	Ballhaus William LDirector, Chairman, President & CEO	Exercise or conversion of a derivative security	+153,676	US$43.00	453,512	Form 4 filed Aug 27, 2026
Aug 25, 2026	Ballhaus William LDirector, Chairman, President & CEO	Open-market or private sale	−107,628	US$87.089	345,884	Form 4 filed Aug 27, 2026
Aug 25, 2026	Ballhaus William LDirector, Chairman, President & CEO	Open-market or private sale	−3,448	US$87.993	342,436	Form 4 filed Aug 27, 2026
Aug 24, 2026	Ballhaus William LDirector, Chairman, President & CEO	Exercise or conversion of a derivative security	+140,650	US$42.00	396,697	Form 4 filed Aug 25, 2026
Aug 24, 2026	Ballhaus William LDirector, Chairman, President & CEO	Exercise or conversion of a derivative security	+11,348	US$43.00	408,045	Form 4 filed Aug 25, 2026

What each Form 4 reported, as filed. Non-derivative transactions only; option grants and exercises appear on the filing itself. All filings on EDGAR.

Contract awards · last 12 months

No US federal contract award of US$250K or more on file for the last 12 months.

US federal awards of US$250K or more, from USAspending.gov. Amounts are as the source states them. Defense awards reach USAspending about 90 days after signing.

Upcoming events

Nothing on the manifest for Mercury Systems yet.

Each row links to its source. The calendar lists every company's dates; the full launch manifest explains the status labels.

Peers

Sirius XM HoldingsSIRIUS$8.7B#10 · as of Oct 2, 2026 close
Kratos Defense & Security SolutionsKTOSUS$8.1B#11 · as of Oct 2, 2026 close
Karman Space & DefenseKRMNUS$4.5B#13 · as of Oct 2, 2026 close
Applied Aerospace & DefenseAADXUS$2.2B#14 · as of Oct 2, 2026 close
LyntrisLYNXUS$1.5B#15 · as of Oct 2, 2026 close

All companies with space divisions ranked by whole market cap · Space industry market cap · Leaderboard

Listings

Every listing of Mercury Systems, Inc.
Ticker	Exchange	Currency	Share class	Role
MRCY	Nasdaq	USD	Common	Pricing listing

Share classes

as of Jul 31, 2026

Shares outstanding by class
Class	Shares	As of	Counted	Source
Common	60,136,133	Jul 31, 2026	At its own listed price	SEC EDGAR

How this market cap is built

as of Oct 2, 2026End of day

Shares outstanding: 60,136,133 · every class, counted once · shares as of Jul 31, 2026 · from the 10-K filed Aug 18, 2026
Price: US$84.80 · priced on Nasdaq (MRCY) · regular-session last sale on Oct 2, 2026
Market cap: US$5.1B = 60,136,133 shares × US$84.80
In Canadian dollars: C$7.3B · Bank of Canada rate for Oct 2, 2026: US$1 = C$1.4246
On the list: Number 12 of 17 companies with space divisions with a computed market cap. Only part of this company is space.

Market cap = shares outstanding × one price × one exchange rate (methodology). The price is a last sale across several US venues, not the official closing auction price.

How this number is built: methodology. Where the data comes from: sources. Who runs this site and what they hold: disclosures.