[144] Mercury Systems Inc. SEC Filing

Rhea-AI Filing Summary

Mercury Systems (MRCY) Form 144 notice: Steven V. Ratner proposes to sell 1,735 common shares through Fidelity on 08/19/2025, with an aggregate market value of $111,844.69. The filing shows those shares were acquired on 08/18/2025 by restricted stock vesting and received as compensation. The issuer has 59,915,670 shares outstanding, indicating the sale is a small fraction of the company’s equity. The filer also reported two recent sales in the past three months: 1,839 shares on 06/16/2025 (gross proceeds $98,344.57) and 1,681 shares on 08/18/2025 (gross proceeds $111,813.90). The signer certifies no undisclosed material adverse information.

Insights

Securities Analyst

TL;DR: Insider sale is routine and small relative to outstanding shares; limited immediate market impact.

The filing discloses a proposed sale of 1,735 shares following restricted stock vesting and recent insider dispositions of similar size. Relative to the issuer's stated 59,915,670 shares outstanding, these amounts are immaterial at the company-wide level. The disclosure satisfies Rule 144 notice requirements and provides transparency on insider liquidity events. Absent other material disclosures, this is a routine insider sale rather than a signal of company-wide financial stress.

Corporate Governance Expert

TL;DR: The form documents compliance with insider-sale reporting; the filer affirms no undisclosed material information.

The notice indicates shares were acquired via restricted stock vesting and sold as compensation-linked liquidity. The repeated small sales reported in the past three months suggest scheduled or staged disposition rather than a single large exit. The signature representation about material information and the explicit broker routing to Fidelity align with standard governance and disclosure practices for executive/insider transactions.

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	1735	111844.69	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			1735	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
Steven V. Ratner 50 Minuteman Road Andover MA 01810	Common	06/16/2025	1839	98344.57
Steven V. Ratner 50 Minuteman Road Andover MA 01810	Common	08/18/2025	1681	111813.90

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 did the Form 144 filed for MRCY disclose?

The Form 144 shows Steven V. Ratner proposes to sell 1,735 common shares on 08/19/2025 with an aggregate market value of $111,844.69.

How were the 1,735 Mercury (MRCY) shares acquired?

The filing states the shares were acquired on 08/18/2025 via restricted stock vesting and were received as compensation.

Has the filer sold Mercury shares recently?

Yes. The filer reported selling 1,839 shares on 06/16/2025 (gross proceeds $98,344.57) and 1,681 shares on 08/18/2025 (gross proceeds $111,813.90).

What is the issuer’s total shares outstanding reported in the filing?

The filing lists 59,915,670 shares outstanding.

Does the filing indicate any undisclosed material information about Mercury?

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