Form 144: MRCY affiliate notifies broker of common share sales

Fidelity Brokerage Services LLC submitted a Form 144 notice related to proposed sales of Common Stock of MRCY.

Rhea-AI Filing Summary

Fidelity Brokerage Services LLC submitted a Form 144 notice related to proposed sales of Common Stock of MRCY. The filing lists individual lots tied to restricted stock vesting dated 01/15/2021, 10/28/2021, 01/15/2022, and 10/27/2022 with quantities 1,564, 1,950, 1,564, and 1,922 shares respectively.

The entry shows a broker/agent name and an aggregate block count field of 7,000 in the record line; detailed cash‑flow treatment and pricing are not included in the excerpt.

Insights

Securities Compliance Attorney

Form 144 lists planned brokered sales of restricted shares vested across four grant dates.

The filing excerpt enumerates specific restricted stock vesting lots and share counts: 1,564, 1,950, 1,564, and 1,922. It identifies a broker and a line showing 7,000 which appears as an aggregate field in the record.

Timing, sale method specifics, and proceeds recipient language are not present in the excerpt; subsequent records or confirmations will show actual transactions and cash flows.

Key Figures

Broker record field: 7,000 Vested lot: 1,564 shares Vested lot: 1,950 shares +2 more

5 metrics

Broker record field 7,000 Aggregate field in the record line

Vested lot 1,564 shares Restricted Stock Vesting dated 01/15/2021

Vested lot 1,950 shares Restricted Stock Vesting dated 10/28/2021

Vested lot 1,564 shares Restricted Stock Vesting dated 01/15/2022

Vested lot 1,922 shares Restricted Stock Vesting dated 10/27/2022

Key Terms

Restricted Stock Vesting, Form 144, Issuer

3 terms

Restricted Stock Vesting regulatory

"Listed next to each lot with a vesting date and share count"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Form 144 regulatory

"Header and implied by the filing type showing proposed sales by an affiliate"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Issuer other

"Designation for the source of the restricted stock vesting entries"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the MRCY Form 144 filing show?

The filing lists proposed sales of Common Stock via Form 144 tied to restricted stock vesting. It names a broker and identifies four vested lots of 1,564, 1,950, 1,564, and 1,922 shares dated in 2021–2022.

Who is listed as the broker in the Form 144 for MRCY?

The excerpt names Fidelity Brokerage Services LLC with an address record line. The broker entry appears in the filing header but the excerpt does not include contact or execution details for sales.

Does the excerpt state the total shares being sold for MRCY?

The excerpt shows a record field of 7,000 and four lot quantities of 1,564, 1,950, 1,564, and 1,922. The document does not explicitly state an aggregate ‘being sold’ total for the notice in plain declarative terms.

Are sale prices or proceeds disclosed in this Form 144 excerpt for MRCY?

No. The provided excerpt does not include sale prices, aggregate proceeds, or pricing ranges. Pricing and proceeds details are not present in the visible content.

What do the listed dates next to each lot represent in the MRCY filing?

Each date is shown alongside a lot labeled Restricted Stock Vesting, indicating the vesting date for those specific compensated share lots: 01/15/2021, 10/28/2021, 01/15/2022, 10/27/2022.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/12/2026 - 02:50 PM EDT Learn about SEC filing dates

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	0001573157
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	MERCURY SYSTEMS INC
SEC File Number	001-41194
Address of Issuer	50 MINUTEMAN ROAD ANDOVER MASSACHUSETTS 01810
Phone	9782561300
Name of Person for Whose Account the Securities are To Be Sold	Carvalho Orlando D
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	Director

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	7000	625527.00	60043283	05/12/2026	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	01/15/2021	Restricted Stock Vesting	Issuer			1564	01/15/2021	Compensation
Common	10/28/2021	Restricted Stock Vesting	Issuer			1950	10/28/2021	Compensation
Common	01/15/2022	Restricted Stock Vesting	Issuer			1564	01/15/2022	Compensation
Common	10/27/2022	Restricted Stock Vesting	Issuer			1922	10/27/2022	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	05/12/2026
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	/s/ Eric Janiak, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Orlando Carvalho
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)