Welcome to our dedicated page for MERCURY SYSTEMS SEC filings (Ticker: MRCY), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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MERCURY SYSTEMS INC (MRCY) reported that officer Douglas Munro, SVP and Chief Accounting Officer, sold a total of 898 shares of common stock in mid-August 2026. The sales of 494 shares at $111.3577 on August 18 and 404 shares at $109.9509 on August 17 were executed as part of a sell-to-cover program to satisfy tax withholding obligations upon the vesting of stock awards. Munro also reports indirect ownership of 359 shares held in a 401K Plan.
MERCURY SYSTEMS INC (MRCY) reported that executive vice president and chief human resources officer Steven Ratner sold a total of 3,055 shares of common stock in mid‑August 2026. On August 17, he sold 1,084 shares at $109.9509 per share and on August 18, he sold 1,971 shares at $111.3577 per share. According to the company’s disclosure, these transactions were part of a sell-to-cover program used to satisfy tax withholding obligations upon the vesting of stock awards, with the stated prices representing the per‑share amounts attributed to all participants’ sales on those dates. Following these transactions, Ratner also has an indirect holding of 356 shares in a 401K Plan.
MERCURY SYSTEMS INC (MRCY) reported insider activity by EVP, CLO & Corp Sec Stuart Kupinsky. He sold an aggregate 2,373 shares of common stock on August 17–18, 2026, at prices of $109.9509 and $111.3577 per share. Footnotes state these were part of a sell-to-cover program to satisfy tax withholding obligations upon vesting of stock awards, rather than discretionary sales. The filing also reports 1,233 shares of common stock held indirectly through a 401K Plan.
MERCURY SYSTEMS INC (MRCY) reported that its EVP and CFO, David E. Farnsworth, had shares of Common Stock sold on his behalf in August 2026 under a sell-to-cover program to meet tax withholding obligations tied to vesting stock awards. On August 17 and 18, 2026, an aggregate of 8,692 shares were sold at per-share prices determined for all participants in the program, rather than as individual discretionary trades. The filing also reports that 1,516 shares are held indirectly in a 401K Plan after the August 17, 2026 date.
MERCURY SYSTEMS INC (MRCY) reported insider transactions by Chairman, President & CEO William L. Ballhaus involving company common stock. On August 17–18, 2026, he sold a total of 27,680 shares of common stock in open-market or private transactions at per-share prices of $109.9509 and $111.3577. Footnotes state these sales were part of a sell-to-cover program to satisfy tax withholding obligations upon the vesting of stock awards, and the reported prices are the per‑share prices attributed to sales made on behalf of all program participants on those dates. The filing also lists post‑transaction indirect holdings of 1,403 shares in a 401K Plan and 7,066.173 shares held by Milestone Road Holdings, LLC.
MERCURY SYSTEMS INC (MRCY) is named as the issuer in a notice of proposed Rule 144 sales by William L. Ballhaus, with Fidelity Brokerage Services LLC acting as broker and attorney-in-fact. The filing covers planned and recent sales of common stock, including shares received through restricted stock vesting and shares sold in part to satisfy tax obligations related to a vested equity award.
MERCURY SYSTEMS INC (MRCY) insider David E. Farnsworth filed a notice of proposed sale of common stock under Rule 144. The notice covers 8,155 shares held at Fidelity Brokerage Services, with a stated value of 817995.43, and references prior sales over the past three months. The filing notes that part of the sale is intended to cover tax obligations arising from the settlement of a vested equity award distribution.
MERCURY SYSTEMS INC (MRCY) is named as the issuer in a notice of proposed sales of its common stock under Rule 144 by officer Stuart Kupinsky. The notice covers planned sales of 1,308 shares of common stock through Fidelity Brokerage Services LLC on or after August 19, 2026. The securities relate to restricted stock vesting on August 18, 2026, received as compensation. The disclosure notes that the sale amount includes shares needed to cover a tax obligation arising from settlement of the vested equity award.
MERCURY SYSTEMS INC (MRCY) is the issuer for which Steven V. Ratner has filed a Rule 144 notice covering a proposed sale of 2,187 common shares, held at Fidelity Brokerage Services LLC and valued at $219,369.22, with an anticipated sale date of August 19, 2026 on NASDAQ. The shares arise from restricted stock vesting on August 18, 2026 as compensation, and the filer notes that the sale includes shares to cover a tax obligation from settlement of a vested equity award distribution. In the prior three months, Ratner sold 1,084 shares for $119,186.78 on August 17, 2026 and 1,971 shares for $219,486.03 on August 18, 2026.
MERCURY SYSTEMS INC (MRCY) insider Douglas Munro, identified as an officer, has filed a notice of proposed sale of company securities under Rule 144. The notice covers the planned sale of 548 shares of MRCY common stock held at Fidelity Brokerage Services LLC, with an indicated value of $54,967.69 as of August 19, 2026 on NASDAQ. The shares derive from a restricted stock vesting event on August 18, 2026 and are classified as compensation. Munro also reports prior sales over the past three months of 404 shares for $44,420.17 on August 17, 2026 and 494 shares for $55,010.70 on August 18, 2026. The filing notes that the sale includes shares needed to cover a tax obligation from the vested equity award.