Follow the people · Insider
William L. Ballhaus
William L. Ballhaus files insider transactions with the SEC as a chairman, president & ceo of Mercury Systems (MRCY). We hold 8 disclosed purchases and sales filed since 30 October 2008, 8 of them in the last 90 days.
- Files forMRCY
- Disclosed buys and sells8 in all, 8 in the last 90 days
- Last disclosure27 August 2026
Positions held
3 posts we hold — a term names its own dates; a run of filings only says when they filed- Filed 23 June 2022 — 26 August 2026Chairman, President & CEO · Mercury Systems (MRCY)43 Form 4 lines · source: SEC Form 4
- Filed 1 January 2011 — 1 April 2011Director · GeoEye (GEOY)2 Form 4 lines · source: SEC Form 4
- Filed 3 September 2008 — 7 July 2010President & CEO · Dyncorp International (DCP)11 Form 4 lines · source: SEC Form 4
Everything they disclosed
56 entries, newest first — one per disclosure report, one per Form 4 line- exercised options over 153,676 shares of Mercury SystemsSEC Form 427 August 2026Common Stock · traded 25 August 2026 · filed 27 August 2026
- ▼ sold on the open market 107,628 shares of Mercury SystemsSEC Form 427 August 2026Common Stock · traded 25 August 2026 · filed 27 August 2026
- ▼ sold on the open market 3,448 shares of Mercury SystemsSEC Form 427 August 2026Common Stock · traded 25 August 2026 · filed 27 August 2026
- exercised options over 68,476 shares of Mercury SystemsSEC Form 427 August 2026Common Stock · traded 26 August 2026 · filed 27 August 2026
- ▼ sold on the open market 38,276 shares of Mercury SystemsSEC Form 427 August 2026Common Stock · traded 26 August 2026 · filed 27 August 2026
- ▼ sold on the open market 10,814 shares of Mercury SystemsSEC Form 427 August 2026Common Stock · traded 26 August 2026 · filed 27 August 2026
- exercised options over 153,676 shares of Mercury Systems (a derivative holding)SEC Form 427 August 2026Employee Stock Option (Right to Buy) · traded 25 August 2026 · filed 27 August 2026
- exercised options over 68,476 shares of Mercury Systems (a derivative holding)SEC Form 427 August 2026Employee Stock Option (Right to Buy) · traded 26 August 2026 · filed 27 August 2026
- exercised options over 92,850 shares of Mercury SystemsSEC Form 425 August 2026Common Stock · traded 21 August 2026 · filed 25 August 2026
- exercised options over 11,348 shares of Mercury Systems (a derivative holding)SEC Form 425 August 2026Employee Stock Option (Right to Buy) · traded 24 August 2026 · filed 25 August 2026
- ▼ sold on the open market 64,796 shares of Mercury SystemsSEC Form 425 August 2026Common Stock · traded 21 August 2026 · filed 25 August 2026
- ▼ sold on the open market 204 shares of Mercury SystemsSEC Form 425 August 2026Common Stock · traded 21 August 2026 · filed 25 August 2026
- exercised options over 140,650 shares of Mercury SystemsSEC Form 425 August 2026Common Stock · traded 24 August 2026 · filed 25 August 2026
- exercised options over 11,348 shares of Mercury SystemsSEC Form 425 August 2026Common Stock · traded 24 August 2026 · filed 25 August 2026
- ▼ sold on the open market 105,471 shares of Mercury SystemsSEC Form 425 August 2026Common Stock · traded 24 August 2026 · filed 25 August 2026
- ▼ sold on the open market 2,738 shares of Mercury SystemsSEC Form 425 August 2026Common Stock · traded 24 August 2026 · filed 25 August 2026
- exercised options over 92,850 shares of Mercury Systems (a derivative holding)SEC Form 425 August 2026Employee Stock Option (Right to Buy) · traded 21 August 2026 · filed 25 August 2026
- exercised options over 140,650 shares of Mercury Systems (a derivative holding)SEC Form 425 August 2026Employee Stock Option (Right to Buy) · traded 24 August 2026 · filed 25 August 2026
- ▼ sold on the open market 26,802 shares of Mercury SystemsSEC Form 421 August 2026Common Stock · traded 19 August 2026 · filed 21 August 2026
- ▼ sold on the open market 22,010 shares of Mercury SystemsSEC Form 421 August 2026Common Stock · traded 20 August 2026 · filed 21 August 2026
- ▼ sold on the open market 3,536 shares of Mercury SystemsSEC Form 419 August 2026Common Stock · traded 17 August 2026 · filed 19 August 2026
- ▼ sold on the open market 24,144 shares of Mercury SystemsSEC Form 419 August 2026Common Stock · traded 18 August 2026 · filed 19 August 2026
- returned to the issuer 70,287 shares of Mercury SystemsSEC Form 418 August 2026Common Stock · traded 14 August 2026 · filed 18 August 2026
- ▼ sold on the open market 10,395 shares of Mercury SystemsSEC Form 420 August 2025Common Stock · traded 18 August 2025 · filed 20 August 2025
- ▼ sold on the open market 13,050 shares of Mercury SystemsSEC Form 420 August 2025Common Stock · traded 19 August 2025 · filed 20 August 2025
- was granted 44,940 shares of Mercury SystemsSEC Form 419 August 2025Common Stock · traded 15 August 2025 · filed 19 August 2025
- was granted 69,006 shares of Mercury SystemsSEC Form 418 September 2024Common Stock · traded 15 August 2024 · filed 18 September 2024
- ▼ sold on the open market 6,549 shares of Mercury SystemsSEC Form 421 August 2024Common Stock · traded 19 August 2024 · filed 21 August 2024
- was granted 69,006 shares of Mercury SystemsSEC Form 419 August 2024Common Stock · traded 15 August 2024 · filed 19 August 2024
- had shares withheld for tax on 567 shares of Mercury SystemsSEC Form 426 June 2024Common Stock · traded 24 June 2024 · filed 26 June 2024
- ▲ bought on the open market 3,653 shares of Mercury SystemsSEC Form 413 February 2024Common Stock · traded 9 February 2024 · filed 13 February 2024
- ▲ bought on the open market 3,413 shares of Mercury SystemsSEC Form 413 February 2024Common Stock · traded 12 February 2024 · filed 13 February 2024
- had shares withheld for tax on 408 shares of Mercury SystemsSEC Form 430 October 2023Common Stock · traded 27 October 2023 · filed 30 October 2023
- ▲ bought on the open market 39,925 shares of Mercury SystemsSEC Form 422 August 2023Common Stock · traded 18 August 2023 · filed 22 August 2023
- was granted 233,500 shares of Mercury Systems (a derivative holding)SEC Form 421 August 2023Employee Stock Option (Right to Buy) · traded 17 August 2023 · filed 21 August 2023
- was granted 233,500 shares of Mercury Systems (a derivative holding)SEC Form 421 August 2023Employee Stock Option (Right to Buy) · traded 17 August 2023 · filed 21 August 2023
- was granted 233,500 shares of Mercury Systems (a derivative holding)SEC Form 421 August 2023Employee Stock Option (Right to Buy) · traded 17 August 2023 · filed 21 August 2023
- was granted 233,500 shares of Mercury Systems (a derivative holding)SEC Form 421 August 2023Employee Stock Option (Right to Buy) · traded 17 August 2023 · filed 21 August 2023
- was granted 82,034 shares of Mercury SystemsSEC Form 421 August 2023Common Stock · traded 17 August 2023 · filed 21 August 2023
- was granted 64,260 shares of Mercury SystemsSEC Form 421 August 2023Common Stock · traded 17 August 2023 · filed 21 August 2023
- was granted 92,972 shares of Mercury SystemsSEC Form 421 August 2023Common Stock · traded 17 August 2023 · filed 21 August 2023
- was granted 3,976 shares of Mercury SystemsSEC Form 428 October 2022Common Stock · traded 26 October 2022 · filed 28 October 2022
- was granted 3,767 shares of Mercury SystemsSEC Form 430 June 2022Common Stock · traded 23 June 2022 · filed 30 June 2022
- was granted 243 shares of GeoEye (a derivative holding)SEC Form 45 April 2011Deferred Stock Units · traded 1 April 2011 · filed 5 April 2011
- was granted 1,180 shares of GeoEye (a derivative holding)SEC Form 44 January 2011Deferred Stock Units · traded 1 January 2011 · filed 4 January 2011
- returned to the issuer 125,000 shares of Dyncorp International (a derivative holding)SEC Form 47 July 2010Restricted Stock Units · traded 7 July 2010 · filed 7 July 2010
- returned to the issuer 13,166 shares of Dyncorp International (a derivative holding)SEC Form 47 July 2010Restricted Stock Units · traded 7 July 2010 · filed 7 July 2010
- returned to the issuer 80,850 shares of Dyncorp InternationalSEC Form 47 July 2010Class A Common Stock · traded 7 July 2010 · filed 7 July 2010
- was granted 13,166 shares of Dyncorp International (a derivative holding)SEC Form 47 June 2010Restricted Stock Units · traded 4 June 2010 · filed 7 June 2010
- had shares withheld for tax on 15,825 shares of Dyncorp InternationalSEC Form 421 May 2010Class A Common Stock · traded 19 May 2010 · filed 21 May 2010
- exercised options over 100,000 shares of Dyncorp International (a derivative holding)SEC Form 418 August 2009Restricted Stock Units · traded 19 May 2009 · filed 18 August 2009
- was granted 125,000 shares of Dyncorp International (a derivative holding)SEC Form 418 August 2009Performance Units · traded 2 July 2009 · filed 18 August 2009
- exercised options over 112,500 shares of Dyncorp InternationalSEC Form 418 August 2009Class A Common Stock · traded 19 May 2009 · filed 18 August 2009
- had shares withheld for tax on 15,825 shares of Dyncorp InternationalSEC Form 418 August 2009Class A Common Stock · traded 19 May 2009 · filed 18 August 2009
- was granted 100,000 shares of Dyncorp International (a derivative holding)SEC Form 43 November 2008Restricted Stock Units · traded 3 September 2008 · filed 3 November 2008
- was granted 100,000 shares of Dyncorp International (a derivative holding)SEC Form 430 October 2008Restricted Stock Units · traded 3 September 2008 · filed 30 October 2008
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.