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 (symbol: MRCY) is the issuer of record for a Form 4/A filing submitted to the SEC. KUPINSKY STUART reported acquisition or exercise transactions in this Form 4 filing.
MERCURY SYSTEMS INC (MRCY) reported an amended insider filing for executive vice president, chief legal officer and corporate secretary Stuart Kupinsky. On August 17, 2026, he received a grant of 5,619 shares of common stock in the form of restricted stock units that vest in equal annual installments over three years. After this grant, he held 65,457 shares of common stock directly and 1,233 shares indirectly through a 401(k) plan. No transactions are reported under a Rule 10b5-1 trading plan.
MERCURY SYSTEMS INC (symbol: MRCY) is the issuer of record for a Form 4/A filing submitted to the SEC. Farnsworth David E. reported acquisition or exercise transactions in this Form 4 filing.
MERCURY SYSTEMS INC (MRCY) reports that EVP and CFO David E. Farnsworth received a grant of 8,212 shares of common stock on August 17, 2026 as a compensation award. These are in the form of restricted stock units that vest in equal annual increments over three years. After this grant, he held 148,293 common shares directly and 1,516 shares indirectly through a 401K Plan. This amendment corrects a prior omission of the RSU grant.
MERCURY SYSTEMS INC (symbol: MRCY) is the issuer of record for a Form 4/A filing submitted to the SEC. Ballhaus William L reported acquisition or exercise transactions in this Form 4 filing.
MERCURY SYSTEMS INC (MRCY) reports that Chairman, President and CEO William L. Ballhaus received a grant of 23,629 shares of common stock in the form of restricted stock units on August 17, 2026, which this amended filing states had been inadvertently omitted from the original report.
The restricted stock units vest in equal annual installments over three years after the grant date. Following this grant, Ballhaus holds 324,782.325 shares of common stock directly, plus 1,403 shares through a retirement savings plan and 7,066.173 shares through Milestone Road Holdings, LLC, all as reported in this filing. No Rule 10b5‑1 trading plan is reported.
Mercury Systems Inc (MRCY) executive Steven Ratner, EVP and Chief Human Resources Officer, reported selling 4,000 shares of common stock on September 3, 2026 in a sale characterized as taking place in the open market or a private transaction. The shares were sold at a weighted average price of $84.51 per share, with individual trades executed between $84.49 and $84.52 per share, as disclosed in the footnote. After this transaction, he directly holds 19,275 shares of Mercury Systems common stock and also holds 55 shares indirectly through a 401K plan. No Rule 10b5-1 trading plan is reported for this sale.
MERCURY SYSTEMS INC (MRCY) is the issuer for which Steven V. Ratner has filed a Notice of Proposed Sale of Securities on Form 144. Ratner plans to sell up to 4,000 shares of Mercury Systems common stock through Fidelity Brokerage Services LLC, with an aggregate market value of $338,030.40 as of September 3, 2026 on NASDAQ.
The filing lists shares expected to come from restricted stock vesting grants of 2,183, 1,117, and 700 shares scheduled to vest on August 18, 2025, August 14, 2026, and August 17, 2026, respectively. It also reports recent sales in the prior three months, including 2,187 shares sold for $219,369.22 on August 19, 2026.
MERCURY SYSTEMS INC (MRCY) reported that Chairman, President & CEO William L. Ballhaus exercised employee stock options covering 222,152 shares of common stock at an exercise price of $43.00 per share on August 25–26, 2026, from grants scheduled to expire on August 17, 2027. He then sold a total of 160,166 shares of common stock in multiple trades at weighted average prices between roughly $87.09 and $89.74 per share. A footnote states these sales were intended solely to cover the exercise price, applicable withholding taxes and related transaction costs of the options exercised on the same dates. Following these transactions, indirect holdings reported include 1,403 shares in a 401(k) plan and 7,066.173 shares held by Milestone Road Holdings, LLC.
MERCURY SYSTEMS INC (MRCY) is the issuer for which William L. Ballhaus filed a Rule 144 notice to sell common stock. The filing covers 49,090 shares of common stock, with an aggregate market value of $4,373,744.65, relative to 60,136,133 shares outstanding as of 08/26/2026. The shares are to be sold through Fidelity Brokerage Services LLC and arise from a stock option exercise categorized as compensation. The notice also lists multiple prior open-market sales by Ballhaus over the past three months, including 108,209 shares on 08/24/2026 and 111,076 shares on 08/25/2026.
For MERCURY SYSTEMS INC (MRCY), executive vice president and chief human resources officer Steven Ratner reported a sale of 356 shares of common stock on 2026-08-21 at $91.36 per share through an account identified as a 401K Plan, reported as indirect ownership. After these transactions, he reported holding 23,275 shares directly.
MERCURY SYSTEMS INC (MRCY) executive Stuart Kupinsky, EVP, CLO & Corp Sec, reported selling 1,000 shares of the company’s Common Stock on 2026-08-21 at $95.23 per share in an open-market or private transaction. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted on May 7, 2026. After this transaction, he reported 56,352 shares held directly and 1,233 shares held indirectly through a 401K Plan.
MERCURY SYSTEMS INC (MRCY) reported that Chairman, President & CEO William L. Ballhaus exercised employee stock options for a total of 244,848 shares of common stock on August 21 and 24, 2026 at exercise prices of $42.00 and $43.00 per share. He then sold 173,209 shares of common stock in market transactions at weighted average prices ranging from the high $80s to low $90s per share; a footnote states these sales were intended solely to cover the option exercise price, applicable withholding taxes and related transaction costs. Following these transactions, indirect holdings reported include 1,403 shares in a 401(k) plan and 7,066.173 shares held by Milestone Road Holdings, LLC.