Every Form 4 that Mercury Systems Inc. (MRCY) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow MRCY and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full MRCY filings page.
Mercury Systems director Barry R. Nearhos received 235 deferred stock units (DSUs) on October 15, 2026, in lieu of a quarterly cash retainer payment. The DSUs were fully vested upon grant but convert into common stock only when he ceases to be a member of the Board. His reported direct position after the grant was 31,729 shares; the filing also lists 3,500 shares held indirectly by his spouse.
Mercury Systems Inc. (MRCY) EVP, CLO & Corp Sec Stuart Kupinsky sold 1,000 shares of common stock on September 21, 2026, at $86.52 per share. The sale was made under a Rule 10b5-1 trading plan adopted on May 7, 2026. After the sale, he directly held 60,971 shares and reported 1,281 shares held indirectly through a 401K Plan.
MERCURY SYSTEMS INC (symbol: MRCY) is the issuer of record for a Form 4/A filing submitted to the SEC. Ratner Steven reported acquisition or exercise transactions in this Form 4 filing.
MERCURY SYSTEMS INC (MRCY) reports that executive vice president and chief human resources officer Steven Ratner received a grant of 5,187 shares of common stock in the form of restricted stock units on August 17, 2026. These restricted stock units vest in equal annual installments over three years. Following this award, Ratner holds 33,646 shares directly and 356 shares indirectly through a 401K plan. No transactions are reported as made 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. Munro Douglas reported acquisition or exercise transactions in this Form 4 filing.
MERCURY SYSTEMS INC (MRCY) reports that Senior Vice President and Chief Accounting Officer Douglas Munro received a grant of 2,882 shares of common stock on August 17, 2026 as a compensation-related award. These are restricted stock units that vest in equal annual increments over three years, leaving him with 17,015 directly held shares plus 359 shares held indirectly through a 401K Plan after the grant. The amendment corrects a prior omission of this award and states no transactions were made 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. 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) 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.
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.
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) 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) reported an insider equity change by executive vice president and chief human resources officer Steven Ratner. On 2026-08-14, Ratner disposed of 2,695 shares of common stock back to the issuer, at a reported price of $0.00 per share, in a transaction classified as a disposition to issuer. According to a footnote, these shares represented performance stock awards that were forfeited due to below-target performance of the awards. After this event, Ratner held 29,543 shares directly and an additional 356 shares indirectly through a 401K Plan.
MERCURY SYSTEMS INC (MRCY) reported that executive officer Stuart Kupinsky, EVP, CLO & Corp Sec, had 6,977 shares of common stock disposed of in a transaction with the issuer on 2026-08-14. According to a footnote, these shares represented performance stock awards that were forfeited due to below-target performance under the award terms. After this forfeiture, Kupinsky directly holds 61,033 shares of MRCY common stock and indirectly holds 1,233 shares through a 401K Plan.
For MERCURY SYSTEMS INC (MRCY), EVP and CFO David E. Farnsworth reported a disposition of 16,275 shares of common stock on 2026-08-14. These shares represented performance stock awards that were forfeited due to below-target performance and returned to the issuer. Following this forfeiture, Farnsworth directly holds 141,426 common shares and indirectly holds 1,516 shares through a 401K Plan.
For MERCURY SYSTEMS INC (MRCY), Chairman, President & CEO William L. Ballhaus reported a disposition of 70,287 shares of Common Stock on August 14, 2026, described as a "Disposition to issuer". A footnote states these shares represent performance stock awards that were forfeited due to below-target performance, rather than sold in the market. Following this forfeiture, Ballhaus directly holds 304,689.325 shares. He also reports indirect holdings of 1,403 shares through a 401K Plan and 7,066.173 shares held by Milestone Road Holdings, LLC.
Mercury Systems Inc. director Barry R. Nearhos reported an award of 170 deferred stock units (DSUs) on July 16, 2026, issued in lieu of a quarterly cash retainer and fully vested at grant. These DSUs convert into common shares only when he leaves the Board. After this award, his directly reported holdings total 31,494 units, with an additional 3,500 common shares held indirectly by his spouse.
Mercury Systems director Howard L. Lance reported insider share sales and updated holdings. On May 26, 2026, a revocable living trust associated with him completed two open-market sales of Mercury Systems common stock, disposing of 8,000 shares at a weighted average price of $99.9525 per share and a further 1,250 shares at a weighted average price of $98.4992 per share. Both transactions were executed in multiple trades within disclosed price ranges. After these sales, the trust no longer holds shares, while Lance continues to own 27,272 shares directly in his own name.
MERCURY SYSTEMS INC director Orlando D. Carvalho reported an open-market sale of 7,000 shares of Common Stock at $89.361 per share. After this transaction, he directly holds 52,448 shares. The filing reflects a single net-selling transaction with no derivative exercises reported.
Mercury Systems EVP and CHRO Steven Ratner reported an open-market sale of company stock. On May 11, 2026, he sold 2,000 shares of Mercury Systems common stock at $92.46 per share, leaving him with 32,238 directly held shares and 287 shares held indirectly through a 401K plan.
Mercury Systems Inc director Barry R. Nearhos received a grant of 245 deferred stock units in lieu of a quarterly cash retainer for his board service. These units were fully vested on grant but will not convert into common stock until he leaves the Board of Directors. Following this award, he holds 31,324 deferred stock units directly and has an additional 3,500 shares reported as indirectly owned through his spouse.
Mercury Systems EVP and CFO David E. Farnsworth reported an open-market sale of 3,625 shares of common stock. Footnotes state the shares were sold under a sell-to-cover program to satisfy tax withholding obligations when stock awards vested, rather than as a discretionary sale.
After this transaction, he holds 157,701 shares directly and 1,419 shares indirectly through a 401K Plan, indicating he retains a substantial equity stake in the company.
Ratner Steven reported acquisition or exercise transactions in this Form 4 filing.
Mercury Systems EVP and CHRO Steven Ratner received 437 shares of common stock on March 16, 2026 as a grant of restricted stock units earned as matching awards under Mercury's Deferred Compensation Matching Plan. Following this award, he holds 34,238 shares directly and 235 shares indirectly through a 401(k) plan.
MERCURY SYSTEMS INC shareholder JANA Partners Management, LP reported open-market sales of a total of 452,057 shares of Mercury common stock over three days. The sales occurred on March 2, 3, and 4, 2026 at weighted average prices of about $94.05, $90.12, and $89.68 per share, respectively. After these transactions, accounts managed by JANA held 4,114,618 shares of Mercury common stock. JANA states the sales were made to rebalance the holdings of the funds and accounts it manages and disclaims beneficial ownership beyond its pecuniary interest.
Mercury Systems director Howard L. Lance sold common stock in the company. On February 25, 2026, he completed an open-market sale of 4,832 shares of Mercury Systems common stock at a weighted average price of $88.9817 per share, executed across multiple trades.
After this sale, Lance directly owned 27,272 common shares. In addition, 9,250 shares were held indirectly through The Howard L. Lance Revocable Living Trust dated September 1, 2006.
Mercury Systems executive Stuart Kupinsky reported an insider stock sale mainly tied to taxes. As EVP, CLO & Corporate Secretary, he sold 2,287 shares of Mercury Systems common stock in an open-market transaction at an average price of $83.5554 per share.
According to the footnotes, these shares were sold under a sell-to-cover program to satisfy tax withholding obligations upon vesting of stock awards, indicating the sale was driven by tax requirements rather than a discretionary portfolio decision. After this transaction, Kupinsky held 68,010 shares directly and 1,082 shares indirectly through a 401(k) plan.
Mercury Systems Inc. senior vice president and chief accounting officer Douglas Munro reported an open-market sale of 582 shares of common stock on February 17, 2026. The shares were sold at a price of $83.5554 per share as part of a sell-to-cover program to satisfy tax withholding obligations upon the vesting of stock awards.
After this transaction, Munro directly held 14,328 shares of Mercury Systems common stock and indirectly held 248 shares through a 401(k) plan. The filing indicates this was a tax-related sale rather than a discretionary reduction of his overall economic interest.
JANA Partners Management, LP reported an open-market sale of 400,000 shares of Mercury Systems common stock at $81 per share on February 9, 2026. The position is held indirectly through funds and accounts it manages.
After this transaction, JANA reported 4,566,675 shares beneficially owned indirectly. JANA describes the sale as rebalancing the holdings of its managed funds and accounts and disclaims beneficial ownership beyond its pecuniary interest. JANA may be deemed a director by deputization because a managing partner serves on Mercury’s board.
Mercury Systems director Barry R. Nearhos reported receiving additional equity-based compensation. On January 15, 2026, he was granted 474 deferred stock units (DSUs), recorded as an acquisition of common stock at $0 per share in lieu of a quarterly cash retainer for board service. These DSUs are fully vested on the grant date but will not convert into shares of common stock until he ceases to serve on the Board of Directors.
Following this grant, Nearhos is shown as beneficially owning 31,079 shares of common stock directly, plus an additional 3,500 shares indirectly held by his spouse. The filing reflects routine director compensation and updated ownership totals rather than any open-market purchase or sale.
Mercury Systems (MRCY): A senior officer reported a stock sale. On 11/12/2025, the company’s SVP and Chief Accounting Officer sold 1,329 shares of common stock at a weighted average price of $73.4159.
Following the transaction, the reporting person directly holds 14,678 shares and indirectly holds 222 shares via a 401(k) plan. The sale was executed in multiple trades within a price range of $73.415 to $73.424.
Mercury Systems (MRCY): Form 4 insider transaction. JANA Partners Management, LP reported a sale of 1,000,000 shares of common stock on 11/06/2025, coded “S” (sale), at a price of $75.45 per share. Following the transaction, JANA reported 4,966,675 shares beneficially owned on an indirect basis.
The filing notes the trade was made to rebalance holdings across funds and accounts managed by JANA. The firm disclaims beneficial ownership beyond any pecuniary interest. JANA may be deemed a director by deputization because its managing partner, Scott Ostfeld, serves on Mercury’s board.
Mercury Systems (MRCY): Director stock sale. A director reported selling 1,700 shares of common stock on 11/07/2025 at $73.9906 per share (Form 4, code S). After this transaction, the director directly owns 16,833 shares. The filing was made by one reporting person and was signed by an attorney-in-fact on 11/10/2025.