Mercury Systems Inc
MRCY- Exchange
- Nasdaq
- Industry
- Electronic Components & Accessories
- SEC CIK
- 0001049521
In the last 90 days, Mercury Systems Inc insiders filed 0 open-market purchases and 11 sales; 392 institutions reported holding it in 13F filings for Q2 2026, worth $8.01B in total; no superinvestor holds it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsLast 90 days, $37.1M in total
- 11
- 13F holdersQ2 2026, +41 vs. previous quarter
- 392
- 13F valueReported value at the end of Q2 2026
- $8.01B
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding MRCY, Q2 2026
No superinvestor reported holding MRCY at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Mercury Systems Inc insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 23, 2026 (view filing)5:37 PM ET | Sep 21 | 2 days | Kupinsky StuartEVP, CLO & Corp Sec | SSale | −1.00K | $86.52 | −$86.5K | −1.6%61.0K after | 10b5-1 |
| Sep 8, 2026 (view filing)9:46 PM ET | Sep 3 | 5 days | Ratner StevenEVP, CHRO | SSale | −4.00K | $84.51 | −$338.0K | −17.2%19.3K after | |
| Aug 27, 2026 (view filing)4:54 PM ET | Aug 25-26 | 2 days | Ballhaus William LChairman, President & CEO | SSale | −160.2K | $87.72 | −$14.1M | −30.7%361.8K after | 4 lots |
| Aug 25, 2026 (view filing)6:00 PM ET | Aug 21 | 4 days | Ratner StevenEVP, CHRO | SSale | −356 | $91.36 | −$32.5K | −100.0%0 after | |
| Aug 25, 2026 (view filing)5:54 PM ET | Aug 21 | 4 days | Kupinsky StuartEVP, CLO & Corp Sec | SSale | −1.00K | $95.23 | −$95.2K | −1.7%56.4K after | 10b5-1 |
| Aug 25, 2026 (view filing)5:53 PM ET | Aug 21-24 | 4 days | Ballhaus William LChairman, President & CEO | SSale | −173.2K | $90.59 | −$15.7M | −36.6%299.8K after | 4 lots |
| Aug 21, 2026 (view filing)4:52 PM ET | Aug 19-20 | 2 days | Munro DouglasSVP, CAO | SSale | −657 | $99.87 | −$65.6K | −4.8%13.0K after | 2 lots |
| Aug 21, 2026 (view filing)4:51 PM ET | Aug 19-20 | 2 days | Ratner StevenEVP, CHRO | SSale | −3.21K | $99.47 | −$319.6K | −12.1%23.3K after | 2 lots |
| Aug 21, 2026 (view filing)4:50 PM ET | Aug 19 | 2 days | Kupinsky StuartEVP, CLO & Corp Sec | SSale | −1.31K | $100.31 | −$131.2K | −2.2%57.4K after | |
| Aug 21, 2026 (view filing)4:49 PM ET | Aug 19-20 | 2 days | Farnsworth David E.EVP, CFO | SSale | −14.8K | $99.13 | −$1.46M | −11.1%118.0K after | 2 lots |
Top 10 13F holders, Q2 2026
The largest institutional positions in Mercury Systems Inc at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 9,370,902 | $1.15B | 0.02% | +450,577+5.1% | Added |
| JANA Partners Management, LP | 3,958,849 | $484.3M | 25.46% | −148,575−3.6% | Reduced |
| State Street Corp | 3,418,290 | $418.0M | 0.01% | −447,429−11.6% | Reduced |
| Vanguard Portfolio Management LLC | 3,031,459 | $370.8M | 0.02% | +120,555+4.1% | Added |
| Invesco Ltd. | 2,669,450 | $326.6M | 0.03% | +227,872+9.3% | Added |
| Vanguard Capital Management LLC | 2,422,629 | $296.4M | 0.01% | +18,811+0.8% | Added |
| FMR LLC | 1,842,103 | $225.3M | 0.01% | +938,435+103.8% | Added |
| T. Rowe Price Investment Management, Inc. | 1,595,711 | $195.2M | 0.13% | +15,879+1.0% | Added |
| Goldman Sachs Group Inc | 1,575,727 | $192.8M | 0.02% | +374,615+31.2% | Added |
| Conestoga Capital Advisors, LLC | 1,487,191 | $181.9M | 3.96% | −431,400−22.5% | Reduced |