[144] Mercury Systems Inc. SEC Filing

Rhea-AI Filing Summary

Form 144 notice for Mercury Systems, Inc. (MRCY): An individual intends to sell 7,572 restricted common shares acquired by restricted stock vesting on 08/18/2025. The filing lists an aggregate market value of $488,119.90 for the proposed sale and shows 59,915,670 shares outstanding. The broker is Fidelity Brokerage Services LLC and the approximate sale date is 08/19/2025 on NASDAQ. The acquisition and payment are recorded as compensation with payment date 08/18/2025. The filer certifies they have no undisclosed material adverse information.

Positive

• Compliance filing completed: Required Form 144 information is provided including broker, number of shares, acquisition date, and aggregate market value.
• Acquisition source disclosed: Shares were acquired via restricted stock vesting and payment is recorded as compensation.

Negative

• Insider intends to sell shares: The filer proposes to sell 7,572 common shares, a disposition by an insider or person subject to Rule 144 reporting.
• Recent prior sale listed: The document shows a sale of 7,339 shares on 08/18/2025 with gross proceeds of $488,163.12.

Insights

Securities Compliance Analyst

TL;DR: Routine insider sales notice for restricted stock vesting, filed to comply with Rule 144 and Rule 10b5-1 disclosure representation.

This Form 144 documents a planned sale of restricted shares that vested on 08/18/2025 and were acquired as compensation from the issuer. The notice names Fidelity Brokerage Services LLC as the executing broker and specifies NASDAQ as the exchange with an approximate sale date of 08/19/2025. The filing includes a standard certification that the seller is not aware of undisclosed material adverse information, and it references Rule 144 reporting requirements. For compliance reviewers, the form contains the essential fields: acquisition date, nature of acquisition, number of shares, broker details, and aggregate market value.

Equity Research Associate

TL;DR: Insider sale following restricted stock vesting; information is factual and routine, not a company performance disclosure.

The submission records a sale by a named individual and a recent sale in the past three months (7,339 shares on 08/18/2025). The document provides explicit figures for shares to be sold, aggregate market value, and total shares outstanding, enabling straightforward investor reference. The filing does not contain earnings, operational, or forward-looking statements; it is an ownership/transaction disclosure rather than an operational update.

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	7572	488119.90	59915670	08/19/2025	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	08/18/2025	Restricted Stock Vesting	Issuer			7572	08/18/2025	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
David E. Farnsworth 50 Minuteman Road Andover MA 01810	Common	08/18/2025	7339	488163.12

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 the Form 144 for MRCY disclose about the proposed sale?

The form discloses a proposed sale of 7,572 common shares with an aggregate market value of $488,119.90, to be executed through Fidelity Brokerage Services LLC on NASDAQ with an approximate sale date of 08/19/2025.

How and when were the shares acquired that are being sold?

The shares were acquired on 08/18/2025 by restricted stock vesting from the issuer and the payment is recorded as compensation on 08/18/2025.

Does the filing state whether the seller knows of any undisclosed material information?

Yes. By signing the notice the person represents they do not know any material adverse information about the issuer that has not been publicly disclosed.

What broker and exchange are listed for the transaction?

The broker is listed as Fidelity Brokerage Services LLC, 900 Salem Street, Smithfield RI 02917, and the exchange is NASDAQ.

How many shares outstanding does the filing report?

The form reports 59,915,670 shares outstanding.