Mercury Systems Inc. filings document the regulatory record for a Massachusetts aerospace and defense technology company listed on Nasdaq under MRCY. Recent Form 8-K reports furnish earnings releases and presentations for quarterly and fiscal results, including GAAP operating measures and non-GAAP measures such as adjusted EBITDA, adjusted income, adjusted EPS, and free cash flow.
The company’s filings also record material financing and governance matters. Disclosures include amendments to its credit agreement and revolving credit facility, borrowing capacity, maturity, leverage-ratio provisions, and related covenant terms. Proxy and annual meeting filings cover director elections, executive compensation, shareholder voting results, long-term incentive plan approval, and other board and compensation governance items.
MERCURY SYSTEMS INC (MRCY) is the issuer for a planned sale of restricted or control common stock under Rule 144 by William L. Ballhaus through Fidelity Brokerage Services LLC. The notice covers 111,076 common shares, with an aggregate market value of $9,676,608.39 and issuer shares outstanding of 60,136,133 as of 08/25/2026.
The shares are tied to a stock option exercise for which the issuer is listed as the counterparty and cash as the form of payment, with a proposed sale date of 08/25/2026 on NASDAQ. Ballhaus has already sold multiple blocks of MRCY common stock in the prior three months, each disclosed with dates, share counts and dollar amounts.
MERCURY SYSTEMS INC (MRCY) is the issuer for a notice under Rule 144 filed for the account of William L. Ballhaus. The notice covers a proposed sale of 8,088 shares of common stock, with an aggregate market value of $729,964.73, when 60,136,133 shares of common stock were outstanding on 08/24/2026. The shares to be sold were acquired on 08/24/2026 through a stock option exercise paid in cash. In the prior three months, Ballhaus reported multiple sales of MRCY common stock totaling several tranches between 3,536 and 65,000 shares on dates from 08/17/2026 to 08/21/2026.
MERCURY SYSTEMS INC (MRCY) is the issuer for which William L. Ballhaus filed a notice of proposed sale of common stock under Rule 144. The notice lists a proposed sale of 100,121 shares of common stock, to be sold through Fidelity Brokerage Services LLC on NASDAQ, with the shares to be acquired via stock option exercise for cash on 08/24/2026.
The filing also reports prior sales of MERCURY SYSTEMS INC common stock by William Ballhaus during the past three months, including transactions on 08/17/2026, 08/18/2026, 08/19/2026, 08/20/2026, and 08/21/2026, with share amounts and aggregate dollar values disclosed for each date.
MERCURY SYSTEMS INC (MRCY) reported that officer Douglas Munro, SVP and Chief Accounting Officer, sold a total of 657 shares of common stock in August 2026. These sales were executed under a sell-to-cover program to satisfy tax withholding obligations upon the vesting of stock awards, and not as discretionary open‑market sales.
MERCURY SYSTEMS INC (MRCY) executive Steven Ratner, EVP and Chief Human Resources Officer, reported sales of company common stock in August 2026. On August 19 and 20, a total of 3,213 shares were sold under a sell-to-cover program to satisfy tax withholding obligations upon vesting of stock awards, at program prices of $100.3060 and $97.6734 per share attributed to all participants. Following these transactions, Ratner also reports indirect ownership of 356 shares held in a 401K Plan.
MERCURY SYSTEMS INC (MRCY) reported that officer Stuart Kupinsky, EVP, CLO & Corp Sec, had 1,308 shares of common stock sold on 2026-08-19 under a sell-to-cover program to satisfy tax withholding obligations upon vesting of stock awards. The program price for participants that day was $100.306 per share. After this tax-related sale, Kupinsky held 57,352 shares directly and 1,233 shares indirectly through a 401K Plan.
MERCURY SYSTEMS INC (MRCY) reported that its EVP and CFO, David E. Farnsworth, sold common stock in transactions tied to equity award vesting. On August 19, 2026, he sold 8,155 shares at a per-share price of $100.3060, and on August 20, 2026, he sold 6,612 shares at $97.6734. Footnotes state these sales were made under a sell-to-cover program to satisfy tax withholding obligations upon vesting of stock awards, and the prices reflect amounts attributed to all participants in the program on each date. A separate line shows indirect ownership of 1,516 shares held through a 401K Plan.
MERCURY SYSTEMS INC (MRCY) reported that Chairman, President & CEO William L. Ballhaus sold a total of 48,812 shares of common stock on August 19–20, 2026 at weighted prices of $100.3060 and $97.6734 per share. Footnotes state these sales were made under a sell-to-cover program to satisfy tax withholding obligations upon vesting of stock awards. After these transactions, he continues to hold shares indirectly, including 1,403 shares in a 401K Plan and 7,066.173 shares through Milestone Road Holdings, LLC.
MERCURY SYSTEMS INC (MRCY) received a Rule 144 notice relating to proposed sales of its common stock for the account of William L. Ballhaus. The notice covers up to 65,000 shares to be sold through Fidelity Brokerage Services LLC following a stock option exercise on 08/21/2026 for cash.
The notice also lists Ballhaus’s sales of MERCURY SYSTEMS INC common stock during the prior three months: 3,536 shares on 08/17/2026 for $388,786.39, 24,144 shares on 08/18/2026 for $2,688,620.31, 26,802 shares on 08/19/2026 for $2,688,401.42, and 22,010 shares on 08/20/2026 for $2,149,791.54. MERCURY SYSTEMS INC common stock is listed on NASDAQ.
MERCURY SYSTEMS INC (MRCY) has a notice under Rule 144 for planned sales of common stock by officer Stuart Kupinsky. The filing states that 1,000 common shares are to be sold through Fidelity Brokerage Services LLC. These shares relate to restricted stock that vested on 02/15/2025 as compensation. The notice also lists prior sales over the past three months, including 1,195, 1,178, and 1,308 common shares sold on 08/17/2026, 08/18/2026, and 08/19/2026, respectively.