# Mercury Systems Inc (MRCY) insider trading, Q3 2026 Canonical: https://sec-api.dev/insider-trading/mrcy > 46 non-derivative transactions: 0 purchases, 31 sales ($41.9M). CIK 1049521. | Date | Insider | Relationship | Code | Shares | Price | Owned after | Filing | | --- | --- | --- | --- | --- | --- | --- | --- | | 2026-09-21 | KUPINSKY STUART | Officer | S | 1000.0 | 86.52 | 60971.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000083/0001049521-26-000083-index.htm | | 2026-09-03 | Ratner Steven | Officer | S | 4000.0 | 84.51 | 19275.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000065/0001049521-26-000065-index.htm | | 2026-08-26 | Ballhaus William L | Director, Officer | S | 10814.0 | 89.74 | 361822.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000063/0001049521-26-000063-index.htm | | 2026-08-26 | Ballhaus William L | Director, Officer | S | 38276.0 | 88.91 | 372636.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000063/0001049521-26-000063-index.htm | | 2026-08-26 | Ballhaus William L | Director, Officer | M | 68476.0 | 43.0 | 410912.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000063/0001049521-26-000063-index.htm | | 2026-08-25 | Ballhaus William L | Director, Officer | S | 3448.0 | 87.99 | 342436.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000063/0001049521-26-000063-index.htm | | 2026-08-25 | Ballhaus William L | Director, Officer | S | 107628.0 | 87.09 | 345884.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000063/0001049521-26-000063-index.htm | | 2026-08-25 | Ballhaus William L | Director, Officer | M | 153676.0 | 43.0 | 453512.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000063/0001049521-26-000063-index.htm | | 2026-08-24 | Ballhaus William L | Director, Officer | S | 105471.0 | 89.47 | 302574.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000060/0001049521-26-000060-index.htm | | 2026-08-24 | Ballhaus William L | Director, Officer | S | 2738.0 | 90.6 | 299836.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000060/0001049521-26-000060-index.htm | | 2026-08-24 | Ballhaus William L | Director, Officer | M | 11348.0 | 43.0 | 408045.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000060/0001049521-26-000060-index.htm | | 2026-08-24 | Ballhaus William L | Director, Officer | M | 140650.0 | 42.0 | 396697.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000060/0001049521-26-000060-index.htm | | 2026-08-21 | Ballhaus William L | Director, Officer | S | 64796.0 | 92.4 | 256251.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000060/0001049521-26-000060-index.htm | | 2026-08-21 | Ballhaus William L | Director, Officer | S | 204.0 | 93.51 | 256047.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000060/0001049521-26-000060-index.htm | | 2026-08-21 | Ballhaus William L | Director, Officer | M | 92850.0 | 42.0 | 321047.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000060/0001049521-26-000060-index.htm | | 2026-08-21 | KUPINSKY STUART | Officer | S | 1000.0 | 95.23 | 56352.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000061/0001049521-26-000061-index.htm | | 2026-08-21 | Ratner Steven | Officer | S | 356.0 | 91.36 | 0.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000062/0001049521-26-000062-index.htm | | 2026-08-20 | Ballhaus William L | Director, Officer | S | 22010.0 | 97.67 | 228197.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000055/0001049521-26-000055-index.htm | | 2026-08-20 | Farnsworth David E. | Officer | S | 6612.0 | 97.67 | 117967.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000056/0001049521-26-000056-index.htm | | 2026-08-20 | Ratner Steven | Officer | S | 1026.0 | 97.67 | 23275.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000058/0001049521-26-000058-index.htm | | 2026-08-20 | Munro Douglas | Officer | S | 109.0 | 97.67 | 12982.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000059/0001049521-26-000059-index.htm | | 2026-08-19 | Ballhaus William L | Director, Officer | S | 26802.0 | 100.31 | 250207.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000055/0001049521-26-000055-index.htm | | 2026-08-19 | Farnsworth David E. | Officer | S | 8155.0 | 100.31 | 124579.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000056/0001049521-26-000056-index.htm | | 2026-08-19 | KUPINSKY STUART | Officer | S | 1308.0 | 100.31 | 57352.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000057/0001049521-26-000057-index.htm | | 2026-08-19 | Ratner Steven | Officer | S | 2187.0 | 100.31 | 24301.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000058/0001049521-26-000058-index.htm | | 2026-08-19 | Munro Douglas | Officer | S | 548.0 | 100.31 | 13091.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000059/0001049521-26-000059-index.htm | | 2026-08-18 | Ballhaus William L | Director, Officer | S | 24144.0 | 111.36 | 277009.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000050/0001049521-26-000050-index.htm | | 2026-08-18 | Farnsworth David E. | Officer | S | 7347.0 | 111.36 | 132734.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000051/0001049521-26-000051-index.htm | | 2026-08-18 | KUPINSKY STUART | Officer | S | 1178.0 | 111.36 | 58660.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000052/0001049521-26-000052-index.htm | | 2026-08-18 | Ratner Steven | Officer | S | 1971.0 | 111.36 | 26488.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000053/0001049521-26-000053-index.htm | | 2026-08-18 | Munro Douglas | Officer | S | 494.0 | 111.36 | 13639.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000054/0001049521-26-000054-index.htm | | 2026-08-17 | Ballhaus William L | Director, Officer | A | 23629.0 | 0.0 | 324782.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000067/0001049521-26-000067-index.htm | | 2026-08-17 | Farnsworth David E. | Officer | A | 8212.0 | 0.0 | 148293.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000069/0001049521-26-000069-index.htm | | 2026-08-17 | KUPINSKY STUART | Officer | A | 5619.0 | 0.0 | 65457.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000070/0001049521-26-000070-index.htm | | 2026-08-17 | Munro Douglas | Officer | A | 2882.0 | 0.0 | 17015.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000071/0001049521-26-000071-index.htm | | 2026-08-17 | Ratner Steven | Officer | A | 5187.0 | 0.0 | 33646.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000072/0001049521-26-000072-index.htm | | 2026-08-17 | Ballhaus William L | Director, Officer | S | 3536.0 | 109.95 | 301153.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000050/0001049521-26-000050-index.htm | | 2026-08-17 | Farnsworth David E. | Officer | S | 1345.0 | 109.95 | 140081.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000051/0001049521-26-000051-index.htm | | 2026-08-17 | KUPINSKY STUART | Officer | S | 1195.0 | 109.95 | 59838.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000052/0001049521-26-000052-index.htm | | 2026-08-17 | Ratner Steven | Officer | S | 1084.0 | 109.95 | 28459.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000053/0001049521-26-000053-index.htm | | 2026-08-17 | Munro Douglas | Officer | S | 404.0 | 109.95 | 14133.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000054/0001049521-26-000054-index.htm | | 2026-08-14 | Ballhaus William L | Director, Officer | D | 70287.0 | 0.0 | 304689.33 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000046/0001049521-26-000046-index.htm | | 2026-08-14 | Farnsworth David E. | Officer | D | 16275.0 | 0.0 | 141426.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000047/0001049521-26-000047-index.htm | | 2026-08-14 | KUPINSKY STUART | Officer | D | 6977.0 | 0.0 | 61033.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000048/0001049521-26-000048-index.htm | | 2026-08-14 | Ratner Steven | Officer | D | 2695.0 | 0.0 | 29543.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000049/0001049521-26-000049-index.htm | | 2026-07-16 | Nearhos Barry R | Director | A | 170.0 | 0.0 | 31494.0 | https://www.sec.gov/Archives/edgar/data/1049521/000104952126000034/0001049521-26-000034-index.htm | Source: https://www.sec.gov/data-research/sec-markets-data/insider-transactions-data-sets --- Independent. 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