Planned sale of 9,258 common shares disclosed

A person named in a Form 144 notice plans to sell 9,258 shares of common stock of the issuer through Fidelity Brokerage Services LLC on or about February 17, 2026 on NASDAQ, with an indicated aggregate market value of $384,762.48.

Rhea-AI Filing Summary

A person named in a Form 144 notice plans to sell 9,258 shares of common stock of the issuer through Fidelity Brokerage Services LLC on or about February 17, 2026 on NASDAQ, with an indicated aggregate market value of $384,762.48.

The shares were acquired on February 13, 2026 through restricted stock vesting from the issuer as compensation. The notice also reports that the issuer had 185,290,870 shares outstanding and that the same seller disposed of 27,873 common shares on December 10, 2025 for $836,190.00 in gross proceeds.

FAQ

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What does the Form 144 filing for ALGM report?

The Form 144 reports a planned sale of 9,258 common shares of the issuer’s stock on NASDAQ. The filing identifies the intended broker, recent acquisition details, and prior three‑month sales by the same seller.

How many ALGM shares are planned to be sold under this Form 144?

The notice covers an intended sale of 9,258 common shares. These shares have an indicated aggregate market value of $384,762.48 and are to be sold through Fidelity Brokerage Services LLC on or about February 17, 2026.

How and when were the ALGM shares in this Form 144 acquired?

The 9,258 shares were acquired on February 13, 2026 via restricted stock vesting from the issuer as compensation. The filing classifies the securities as common stock and ties the vesting and payment dates to the same day.

Which broker and exchange are involved in the planned ALGM share sale?

The filing lists Fidelity Brokerage Services LLC, located in Smithfield, Rhode Island, as broker. The common shares are expected to be sold on the NASDAQ stock market, as specified in the securities information table.

What prior ALGM stock sales by the same seller are disclosed?

The notice reports that 27,873 common shares were sold on December 10, 2025 by Sharon Briansky, generating $836,190.00 in gross proceeds. This disclosure covers sales within the three months preceding the new planned transaction.

How many ALGM shares were outstanding at the time referenced in the filing?

The Form 144 indicates that 185,290,870 common shares of the issuer were outstanding. This figure provides a baseline context for the reported planned sale and is separate from the relatively small block of shares covered by the notice.

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

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Accepted by SEC EDGAR 02/17/2026 - 09:47 AM EST 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	0001897651
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	ALLEGRO MICROSYSTEMS, INC.
SEC File Number	001-39675
Address of Issuer	955 PERIMETER ROAD MANCHESTER NEW HAMPSHIRE 03103
Phone	(603) 626-2300
Name of Person for Whose Account the Securities are To Be Sold	Briansky Sharon
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	Officer

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	9258	384762.48	185290870	02/17/2026	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	02/13/2026	Restricted Stock Vesting	Issuer			9258	02/13/2026	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
Sharon Briansky 955 Perimeter Road Manchester NH 03103	Common	12/10/2025	27873	836190.00

144: Remarks and Signature

Remarks
Date of Notice	02/17/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/02/2025
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 Sharon Briansky
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)