STOCK TITAN

[Form 4] Mercury Systems Inc. Insider Trading Activity

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
4
Rhea-AI Filing Summary

Munro Douglas, VP and CAO of Mercury Systems (MRCY), reported on Form 4 that he acquired 3,380 restricted stock units (RSUs) on 08/15/2025 at no cash price as part of a compensation grant. Following the award his beneficial ownership increased to 16,813 shares in total, with an additional indirect holding of 99 shares through a 401(k) plan. The RSUs are disclosed to vest in equal annual increments over the three years following the grant date, indicating a time-based retention feature. The filing was signed via attorney-in-fact on 08/19/2025.

Munro Douglas, VP e CAO di Mercury Systems (MRCY), ha segnalato nel Form 4 di aver acquisito 3.380 unità azionarie vincolate (RSU) in data 15/08/2025 a titolo gratuito nell'ambito di un piano di compensazione. A seguito dell'assegnazione la sua partecipazione effettiva è salita a 16.813 azioni in totale, con un'ulteriore detenzione indiretta di 99 azioni tramite un piano 401(k). Le RSU sono indicate come soggette a maturazione in quote annuali uguali nei tre anni successivi alla data di assegnazione, carattere che indica una clausola di retention basata sul tempo. La comunicazione è stata firmata per procura il 19/08/2025.

Munro Douglas, vicepresidente y CAO de Mercury Systems (MRCY), informó en el Form 4 que adquirió 3.380 unidades restringidas de acciones (RSU) el 15/08/2025 sin pago en efectivo como parte de una concesión de compensación. Tras la adjudicación, su propiedad beneficiaria aumentó a 16.813 acciones en total, con una tenencia indirecta adicional de 99 acciones a través de un plan 401(k). Las RSU se declaran con adquisición en partes iguales anuales durante los tres años siguientes a la fecha de concesión, lo que indica un componente de retención por tiempo. La presentación fue firmada por apoderado el 19/08/2025.

머큐리 시스템즈(Mercury Systems, MRCY)의 부사장 겸 최고행정책임자(CAO)인 먼로 더글라스(Munro Douglas)는 Form 4에서 보상 지급의 일환으로 2025년 8월 15일에 현금 대가 없이 3,380개의 제한부 주식 단위(RSU)를 취득했다고 보고했습니다. 수령 후 그의 실소유 지분은 총 16,813주로 증가했으며, 401(k) 플랜을 통해 추가로 99주의 간접 보유가 있습니다. 이 RSU는 부여일로부터 향후 3년 동안 매년 동일한 비율로 베스팅되는 것으로 공시되어 있어 기간 기반 유지 조건을 나타냅니다. 해당 신고서는 2025년 8월 19일에 대리인 서명으로 제출되었습니다.

Munro Douglas, VP et CAO de Mercury Systems (MRCY), a déclaré dans le Form 4 avoir acquis 3 380 unités d'actions restreintes (RSU) le 15/08/2025, sans contrepartie en numéraire, dans le cadre d'une attribution de rémunération. À la suite de cette attribution, sa détention effective est passée à 16 813 actions au total, avec une détention indirecte supplémentaire de 99 actions via un plan 401(k). Les RSU sont indiquées comme étant acquises par parts annuelles égales sur les trois années suivant la date d'attribution, ce qui témoigne d'une clause de rétention fondée sur la durée. Le dépôt a été signé par procuration le 19/08/2025.

Munro Douglas, VP und CAO von Mercury Systems (MRCY), meldete im Form 4, dass er am 15.08.2025 im Rahmen einer Vergütungszuwendung 3.380 Restricted Stock Units (RSUs) ohne Barzahlung erworben hat. Nach der Zuwendung erhöhte sich sein wirtschaftlicher Anteil auf insgesamt 16.813 Aktien, zusätzlich hält er indirekt 99 Aktien über einen 401(k)-Plan. Die RSUs sind mit einer jährlichen gleichmäßigen Vesting-Rate über die drei Jahre nach dem Zuteilungsdatum angegeben, was auf eine zeitbasierte Bindungsvereinbarung hinweist. Die Einreichung wurde am 19.08.2025 durch einen Bevollmächtigten unterzeichnet.

Positive
  • Grant aligns management and shareholders: RSUs create long‑term incentive through a three‑year vesting schedule.
  • Increased insider ownership: Beneficial holdings rose to 16,813 shares, signalling added alignment.
  • No cash required for grant: Acquisition recorded at $0, reflecting a standard compensation award rather than a market purchase.
Negative
  • None.

Insights

TL;DR Director-level executive received time‑vesting RSUs, aligning incentives with long‑term performance without immediate cash payment.

The award of 3,380 RSUs to the VP/CAO is a routine compensation action to retain senior management and align interests with shareholders. Because the units vest in equal annual increments over three years, the grant supports multi-year retention and ties future upside to the company's stock performance. There is no immediate cash outlay or exercise price reported, and the filing shows the incremental increase to 16,813 beneficially owned shares, plus 99 shares held indirectly in a 401(k) plan. From a governance perspective, this is standard practice and not material by itself unless part of a larger pattern of unusually large grants.

TL;DR A non‑cash RSU grant modestly raises insider ownership; the time‑vesting schedule limits near‑term share supply impact.

The 3,380 RSU grant increases the reporting person's beneficial stake to 16,813 shares, which marginally strengthens insider alignment. The RSUs vest over three years in equal installments, which stages any potential share issuance and reduces immediate dilution pressure. The transaction code indicates acquisition through grant rather than open‑market purchase. Absent additional context on total outstanding shares or other simultaneous grants, this item is unlikely to be market‑moving.

Munro Douglas, VP e CAO di Mercury Systems (MRCY), ha segnalato nel Form 4 di aver acquisito 3.380 unità azionarie vincolate (RSU) in data 15/08/2025 a titolo gratuito nell'ambito di un piano di compensazione. A seguito dell'assegnazione la sua partecipazione effettiva è salita a 16.813 azioni in totale, con un'ulteriore detenzione indiretta di 99 azioni tramite un piano 401(k). Le RSU sono indicate come soggette a maturazione in quote annuali uguali nei tre anni successivi alla data di assegnazione, carattere che indica una clausola di retention basata sul tempo. La comunicazione è stata firmata per procura il 19/08/2025.

Munro Douglas, vicepresidente y CAO de Mercury Systems (MRCY), informó en el Form 4 que adquirió 3.380 unidades restringidas de acciones (RSU) el 15/08/2025 sin pago en efectivo como parte de una concesión de compensación. Tras la adjudicación, su propiedad beneficiaria aumentó a 16.813 acciones en total, con una tenencia indirecta adicional de 99 acciones a través de un plan 401(k). Las RSU se declaran con adquisición en partes iguales anuales durante los tres años siguientes a la fecha de concesión, lo que indica un componente de retención por tiempo. La presentación fue firmada por apoderado el 19/08/2025.

머큐리 시스템즈(Mercury Systems, MRCY)의 부사장 겸 최고행정책임자(CAO)인 먼로 더글라스(Munro Douglas)는 Form 4에서 보상 지급의 일환으로 2025년 8월 15일에 현금 대가 없이 3,380개의 제한부 주식 단위(RSU)를 취득했다고 보고했습니다. 수령 후 그의 실소유 지분은 총 16,813주로 증가했으며, 401(k) 플랜을 통해 추가로 99주의 간접 보유가 있습니다. 이 RSU는 부여일로부터 향후 3년 동안 매년 동일한 비율로 베스팅되는 것으로 공시되어 있어 기간 기반 유지 조건을 나타냅니다. 해당 신고서는 2025년 8월 19일에 대리인 서명으로 제출되었습니다.

Munro Douglas, VP et CAO de Mercury Systems (MRCY), a déclaré dans le Form 4 avoir acquis 3 380 unités d'actions restreintes (RSU) le 15/08/2025, sans contrepartie en numéraire, dans le cadre d'une attribution de rémunération. À la suite de cette attribution, sa détention effective est passée à 16 813 actions au total, avec une détention indirecte supplémentaire de 99 actions via un plan 401(k). Les RSU sont indiquées comme étant acquises par parts annuelles égales sur les trois années suivant la date d'attribution, ce qui témoigne d'une clause de rétention fondée sur la durée. Le dépôt a été signé par procuration le 19/08/2025.

Munro Douglas, VP und CAO von Mercury Systems (MRCY), meldete im Form 4, dass er am 15.08.2025 im Rahmen einer Vergütungszuwendung 3.380 Restricted Stock Units (RSUs) ohne Barzahlung erworben hat. Nach der Zuwendung erhöhte sich sein wirtschaftlicher Anteil auf insgesamt 16.813 Aktien, zusätzlich hält er indirekt 99 Aktien über einen 401(k)-Plan. Die RSUs sind mit einer jährlichen gleichmäßigen Vesting-Rate über die drei Jahre nach dem Zuteilungsdatum angegeben, was auf eine zeitbasierte Bindungsvereinbarung hinweist. Die Einreichung wurde am 19.08.2025 durch einen Bevollmächtigten unterzeichnet.

SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Munro Douglas

(Last) (First) (Middle)
50 MINUTEMAN ROAD

(Street)
ANDOVER MA 01810

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
MERCURY SYSTEMS INC [ MRCY ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
VP, CAO
3. Date of Earliest Transaction (Month/Day/Year)
08/15/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 08/15/2025 A 3,380(1) A $0 16,813 D
Common Stock 99 I 401K Plan
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
1. Represents restricted stock units that vest in equal annual increments over the three-year period following the grant date.
/s/ John Storm, attorney-in-fact 08/19/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Munro Douglas report on the MRCY Form 4?

He reported the acquisition of 3,380 restricted stock units (RSUs) on 08/15/2025, increasing his beneficial ownership to 16,813 shares.

What is the vesting schedule for the RSUs on this Form 4?

The filing states the RSUs "vest in equal annual increments over the three‑year period following the grant date."

Was there a cash price for the RSU award reported on the Form 4?

No. The transaction is reported with a price of $0, indicating a compensation grant rather than a purchased position.

How many shares does Munro Douglas hold indirectly through a plan?

The Form 4 reports an indirect holding of 99 shares in a 401(k) plan.

When was the Form 4 signed and filed?

The signature block shows authorization by John Storm, attorney‑in‑fact on 08/19/2025.
Mercury Sys Inc

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