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Allegro MicroSystems executive granted 5,300 shares

Allegro MicroSystems, Inc. VP and Chief Accounting Officer Roald Graham reported stock-based compensation awards rather than open-market trades.

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Allegro MicroSystems, Inc. VP and Chief Accounting Officer Roald Graham reported stock-based compensation awards rather than open-market trades. He acquired 544 shares of common stock through a new grant of restricted stock units (RSUs) and 4,756 shares tied to performance-vesting restricted stock units (PSUs) whose performance goals were certified as achieved. The RSUs vest in three equal annual installments beginning on May 16, 2027, while the certified PSUs are scheduled to vest in full on May 16, 2026. After these awards, his direct common stock holdings are a little over 22,000 shares.

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Insider Webster Roald Graham
Role VP, Chief Accounting Officer
Type Security Shares Price Value
Grant/Award Common Stock 4,756 $0.00 $0.00
Grant/Award Common Stock 544 $0.00 $0.00
Holdings After Transaction: Common Stock — 22,600 shares (Direct)
Footnotes (2)
  1. F1. Represents an award of Restricted Stock Units ("RSUs") granted on May 13, 2026. Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest in three equal annual installments beginning on May 16, 2027.
  2. F2. On May 15, 2023, the Reporting Person was granted an award of performance-vesting restricted stock units ("PSUs"), which vest in full on May 16, 2026 in the form of common stock, contingent upon the Issuer's attainment of certain performance objectives between one and three fiscal years. On May 13, 2026, the Compensation Committee of the Issuer's Board of Directors determined that the performance objective goals of the PSUs for the period ending March 27, 2026 had been met for the aggregate number of shares shown. Following certification, the certified portion of the award remains subject to the time-based vesting conditions, with the full amount scheduled to vest on May 16, 2026.
RSU award 544 shares Restricted Stock Units granted on May 13, 2026
PSU certification shares 4,756 shares Performance-vesting PSUs certified on May 13, 2026
Total shares acquired 5,300 shares Sum of RSU and PSU-related common stock
Holdings after RSU grant 22,600 shares Total common stock following RSU-related transaction row
Holdings after PSU entry 22,056 shares Total common stock following PSU-related transaction row
RSU vesting start date May 16, 2027 First of three equal annual installments
PSU grant date May 15, 2023 Performance-vesting PSU award originally granted
PSU vesting date May 16, 2026 Certified PSUs scheduled to vest in full
Restricted Stock Units ("RSUs") financial
"Represents an award of Restricted Stock Units ("RSUs") granted on May 13, 2026."
Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.
performance-vesting restricted stock units ("PSUs") financial
"On May 15, 2023, the Reporting Person was granted an award of performance-vesting restricted stock units ("PSUs")."
contingent right to receive one share of common stock financial
"Each RSU represents a contingent right to receive one share of common stock."
Compensation Committee financial
"the Compensation Committee of the Issuer's Board of Directors determined that the performance objective goals of the PSUs had been met"
A compensation committee is a group within a company's leadership responsible for setting and reviewing how much top executives and employees are paid, including salaries, bonuses, and benefits. It matters to investors because fair and effective pay decisions can influence a company's performance, leadership motivation, and overall governance, helping ensure that the company’s management is aligned with shareholders’ interests.
performance objectives financial
"contingent upon the Issuer's attainment of certain performance objectives between one and three fiscal years."

FAQ

What insider transactions did ALGM executive Roald Graham report on this Form 4?
Roald Graham reported two stock-based compensation acquisitions. He received 544 shares via a new restricted stock unit grant and 4,756 shares from performance-based restricted stock units whose goals were certified as met, all in the form of Allegro MicroSystems common stock.

Were Roald Graham’s ALGM Form 4 transactions open-market purchases or compensation awards?
The transactions were compensation awards, not open-market purchases. Both entries are coded as grants or awards of stock-based units at zero price, reflecting equity compensation tied to time-based and performance-based vesting conditions rather than discretionary buying of shares.

How many Allegro MicroSystems (ALGM) shares did Roald Graham acquire in total?
He acquired 5,300 shares of Allegro MicroSystems common stock in total. This consists of 544 shares from a new RSU award and 4,756 shares from performance-vesting PSUs that were certified based on performance objectives and scheduled to vest as common stock.

When will Roald Graham’s new Allegro MicroSystems RSU and PSU awards vest?
The RSU award vests in three equal annual installments starting on May 16, 2027. The performance-vesting PSU award, granted in May 2023 and certified in May 2026, is scheduled to vest in full as common stock on May 16, 2026, subject to time-based conditions.

What are RSUs and PSUs in the context of ALGM executive compensation?
RSUs and PSUs are forms of stock-based pay. Each RSU or PSU represents a right to receive one share of Allegro MicroSystems common stock upon vesting, with RSUs tied mainly to time-based service and PSUs tied to achieving specified performance goals over defined fiscal periods.

How did performance goals affect Roald Graham’s ALGM PSU award reported here?
His PSUs, granted in May 2023, vested based on Allegro MicroSystems meeting certain performance objectives between one and three fiscal years. On May 13, 2026, the Compensation Committee certified that the goals were met for 4,756 shares, which are scheduled to vest on May 16, 2026.

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Webster Roald Graham
(Last)(First)(Middle)
955 PERIMETER ROAD
(Street)
MANCHESTER NEW HAMPSHIRE 03103
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
ALLEGRO MICROSYSTEMS, INC. [ ALGM ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
VP, Chief Accounting Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock05/13/2026A4,756(1)A$0.0022,056D
Common Stock05/13/2026A544(2)A$0.0022,600D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Represents an award of Restricted Stock Units ("RSUs") granted on May 13, 2026. Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest in three equal annual installments beginning on May 16, 2027.
2. On May 15, 2023, the Reporting Person was granted an award of performance-vesting restricted stock units ("PSUs"), which vest in full on May 16, 2026 in the form of common stock, contingent upon the Issuer's attainment of certain performance objectives between one and three fiscal years. On May 13, 2026, the Compensation Committee of the Issuer's Board of Directors determined that the performance objective goals of the PSUs for the period ending March 27, 2026 had been met for the aggregate number of shares shown. Following certification, the certified portion of the award remains subject to the time-based vesting conditions, with the full amount scheduled to vest on May 16, 2026.
/s/ Raymond Myer, Attorney-in-Fact for Roald G. Webster05/15/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR