Mercury Systems insider to sell 363 shares after RSU vesting

Rhea-AI Filing Summary

Form 144 filing by an insider of Mercury Systems, Inc. (MRCY) reports a proposed sale of 363 shares of common stock held at Fidelity Brokerage Services with an aggregate market value of $24,145.42, representing part of 59,915,670 shares outstanding. The shares were acquired on 08/15/2025 through restricted stock vesting and the purchase/payment is recorded as compensation. The approximate sale date listed is 08/18/2025 on NASDAQ. The filer states there were no other securities sold in the past three months and certifies no undisclosed material adverse information.

Insights

Securities Analyst

TL;DR: Small, routine insider sale from restricted stock vesting; negligible impact on market capitalization.

The filing documents a narrow sale of 363 common shares valued at $24,145.42 arising from restricted stock vesting and earmarked as compensation. Given the issuer's 59,915,670 shares outstanding, this represents an immaterial dilution and is consistent with typical executive or employee compensation monetization. There are no reported prior sales in the past three months, reducing the likelihood of an ongoing disposition program disclosed here. No material adverse information is claimed.

Corporate Governance Expert

TL;DR: Routine compliance disclosure; shows adherence to Rule 144 requirements and insider certification.

The notice follows Rule 144 mechanics by identifying acquisition date, nature (restricted stock vesting), broker, intended sale date, and aggregate value. The signer’s certification that no undisclosed material adverse information exists is standard and signals procedural compliance. The transaction size is small relative to outstanding shares, so it is unlikely to raise governance or signaling concerns absent other context.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	363	24145.42	59915670	08/18/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/15/2025	Restricted Stock Vesting	Issuer			363	08/15/2025	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does Mercury Systems (MRCY) Form 144 report?

The filing reports a proposed sale of 363 shares of common stock valued at $24,145.42, acquired via restricted stock vesting on 08/15/2025.

When is the proposed sale date and where will MRCY shares trade?

The approximate date of sale is listed as 08/18/2025 and the securities are to be sold on NASDAQ through Fidelity Brokerage Services.

Was the consideration for the acquired shares compensation or a purchase?

The acquisition is recorded as Restricted Stock Vesting with the nature of payment listed as Compensation.

Does the filer report other sales in the past three months for MRCY?

The filing states Nothing to Report for securities sold during the past three months by the person for whose account the securities are to be sold.

How material is this sale relative to Mercury Systems’ outstanding shares?

The sale of 363 shares is immaterial relative to 59,915,670 shares outstanding as listed in the form.