Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| ALLEGRO MICROSYSTEMS, INC.ALGM · Entity 3746 | SVP, GC and Secretary | May 16, 2026 | May 19, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
ALLEGRO MICROSYSTEMS, INC.
Report date May 16, 2026 · Filed May 19, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 79,753 |
Reported balance
After 2026-05-16 transaction · row 1
1 source rowRow 1 · 2026-05-16 · Tax withholding · Disposed 13,942 · Balance 79,753 F1: Represents shares withheld to cover taxes due upon the vesting of restricted stock units and performance-vesting restricted stock units that were previously granted by the Issuer |
Filing footnotes · ownership attribution and instrument terms
F1: Represents shares withheld to cover taxes due upon the vesting of restricted stock units and performance-vesting restricted stock units that were previously granted by the Issuer
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| May 16, 2026 Filed May 19, 2026 21:28 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | Tax withholdingCommon Stock | 13,942 | $43.10 | $600,900.20 |
DisclosureSEC source: 0001193125-26-231146 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 79,753 F1 · shares: Represents shares withheld to cover taxes due upon the vesting of restricted stock units and performance-vesting restricted stock units that were previously granted by the Issuer Read SEC document |
| May 13, 2026 Filed May 15, 2026 20:20 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 2,611 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-226841 · ownership.xml · nonDerivative · entry 2 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 93,695 F2 · shares: 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. Read SEC document |
| May 13, 2026 Filed May 15, 2026 20:20 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 15,852 | $0.00 | $0.00 |
DisclosureSEC source: 0001193125-26-226841 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 91,084 F1 · shares: 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. Read SEC document |
| May 11, 2026 Filed May 13, 2026 20:16 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | SaleCommon Stock | 8,948 | $47.54 | $425,379.87 |
DisclosureSEC source: 0001193125-26-221670 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 75,232 F1 · price: The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $47.500 to $47.675. The Reporting Person undertakes to provide to Allegro MicroSystems, Inc. ("ALGM"), any security holder of ALGM, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. Read SEC document |
| March 02, 2026 Filed Mar 3, 2026 21:15 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | SaleCommon Stock | 9,727 | $35.00 | $340,445.00 |
DisclosureSEC source: 0001193125-26-088231 · ownership.xml · nonDerivative · entry 2 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 84,180 F2 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 4, 2025. Details regarding the Reporting Person's trading plan were reported in Part II, Item 5 of the Issuer's Quarterly Report on Form 10-Q for the period ending September 26, 2025, filed with the SEC on October 31, 2025. Read SEC document |
| February 27, 2026 Filed Mar 3, 2026 21:15 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | Tax withholdingCommon Stock | 9,107 | $36.47 | $332,132.29 |
DisclosureSEC source: 0001193125-26-088231 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 93,907 F1 · shares: Represents shares withheld to cover taxes due upon the vesting of restricted stock units that were previously granted by the Issuer. Read SEC document |
| February 17, 2026 Filed Feb 18, 2026 21:16 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | SaleCommon Stock | 9,258 | $41.56 | $384,762.48 |
DisclosureSEC source: 0001193125-26-057087 · ownership.xml · nonDerivative · entry 2 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 103,014 F2 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 4, 2025. Details regarding the Reporting Person's trading plan were reported in Part II, Item 5 of the Issuer's Quarterly Report on Form 10-Q for the period ending September 26, 2025, filed with the SEC on October 31, 2025. Read SEC document |
| February 13, 2026 Filed Feb 18, 2026 21:16 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | Tax withholdingCommon Stock | 8,991 | $42.38 | $381,038.58 |
DisclosureSEC source: 0001193125-26-057087 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 112,272 F1 · shares: Represents shares withheld to cover taxes due upon the vesting of restricted stock units that were previously granted by the Issuer. Read SEC document |
| December 10, 2025 Filed Dec 12, 2025 21:16 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | SaleCommon Stock | 27,873 | $30.00 | $836,190.00 |
DisclosureSEC source: 0001193125-25-317584 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 121,263 F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 4, 2025. Details regarding the Reporting Person's trading plan were reported in Part II, Item 5 of the Issuer's Quarterly Report on Form 10-Q for the period ending September 26, 2025, filed with the SEC on October 31, 2025. Read SEC document |
| May 16, 2025 Filed May 19, 2025 20:20 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | Tax withholdingCommon Stock | 18,712 | $27.51 | $514,767.12 |
DisclosureSEC source: 0000950170-25-074372 · ownership.xml · nonDerivative · entry 2 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 149,136 F2 · shares: Represents shares withheld to cover taxes due upon the vesting of performance-vesting restricted stock units and RSUs that were previously granted by the Issuer. Read SEC document |
| May 15, 2025 Filed May 19, 2025 20:20 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 35,053 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-25-074372 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 167,848 F1 · shares: Represents an award of Restricted Stock Units ("RSUs") granted on May 15, 2025. 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, 2026. Read SEC document |
| May 13, 2025 Filed May 14, 2025 20:30 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 14,656 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-25-071489 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 132,795 F1 · shares: On each of May 16, 2022 and June 11, 2024, the Reporting Person was granted an award of performance-vesting restricted stock units (the "PSUs"). The PSUs were subject to the Issuer's attainment of certain performance objectives between one and three fiscal years, and all remaining unvested amounts under the PSUs are scheduled to vest in full on May 16, 2025 in the form of common stock. On May 13, 2025, the Compensation Committee of the Issuer's Board of Directors determined that the performance objective goals of the PSUs for the period ending March 28, 2025 had been met for the aggregate number of shares shown. Following certification, the awards remain subject to the time-based vesting conditions, with the amount shown scheduled to vest in full on May 16, 2025. Read SEC document |
| February 27, 2025 Filed Mar 3, 2025 21:16 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 18,834 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-25-030870 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 118,139 F1 · kind: Represents an award of Restricted Stock Units ("RSUs") granted on February 27, 2025. Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest in full on February 27, 2026. Read SEC document |
| June 11, 2024 Filed Jun 13, 2024 20:18 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 17,248 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-073025 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 99,305 F1 · shares: Represents an award of Restricted Stock Units ("RSUs") granted on June 11, 2024. 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, 2025. Read SEC document |
| June 03, 2024 Filed Jun 4, 2024 20:15 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | Tax withholdingCommon Stock | 1,929 | $29.27 | $56,461.83 |
DisclosureSEC source: 0000950170-24-068677 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 82,057 F1 · shares: Represents shares withheld to cover taxes due upon the vesting of restricted stock units that were previously granted by the Issuer. Read SEC document |
| May 16, 2024 Filed May 17, 2024 22:05 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | Tax withholdingCommon Stock | 7,773 | $29.75 | $231,246.75 |
DisclosureSEC source: 0000950170-24-061987 · ownership.xml · nonDerivative · entry 2 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 83,986 F2 · shares: Represents shares withheld to cover taxes due upon the vesting of PSUs and restricted stock units that were previously granted by the Issuer. Read SEC document |
| May 15, 2024 Filed May 17, 2024 22:05 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 8,034 | $0.00 | $0.00 |
DisclosureSEC source: 0000950170-24-061987 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 91,759 F1 · shares: On May 16, 2022 and May 15, 2023, the Reporting Person was granted awards of performance-vesting restricted stock units ("PSUs"), which vest over a three fiscal year period in the form of common stock, contingent upon the Issuer's attainment of certain performance objectives between one and three fiscal years. On May 15, 2024, the Compensation Committee of the Issuer's Board of Directors determined that the performance objective goals of the PSUs for the period ending March 29, 2024 had been met for the aggregate number of shares shown. Following certification, the certified portion of the awards remain subject to the time-based vesting conditions, and a portion of the awards vested on May 16, 2024, and the remaining amounts are scheduled to vest in part on May 16, 2025 and May 16, 2026, as applicable. Read SEC document |
| February 13, 2024 Filed Feb 15, 2024 21:37 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | Tax withholdingCommon Stock | 5,469 | $30.34 | $165,929.46 |
DisclosureSEC source: 0000950170-24-015951 · ownership.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 83,725 F1 · shares: Represents shares withheld to cover taxes due upon the vesting of restricted stock units that were previously granted by the Issuer. Read SEC document |
| June 03, 2023 Filed Jun 6, 2023 20:20 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | Tax withholdingCommon Stock | 5,784 | $39.48 | $228,352.32 |
DisclosureSEC source: 0000899243-23-014582 · doc4.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 89,194 F1 · shares: Represents shares withheld to cover taxes due upon the vesting of restricted stock units that were previously granted by the Issuer. Read SEC document |
| May 16, 2023 Filed May 17, 2023 21:01 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | Tax withholdingCommon Stock | 4,723 | $38.14 | $180,135.22 |
DisclosureSEC source: 0001897651-23-000009 · wf-form4_168435726713505.xml · nonDerivative · entry 2 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 94,978 F2 · shares: Represents shares withheld to cover taxes due upon the vesting of RSUs and Performance Stock Units that were previously granted by the Issuer. Read SEC document |
| May 15, 2023 Filed May 17, 2023 21:01 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 11,601 | $0.00 | $0.00 |
DisclosureSEC source: 0001897651-23-000009 · wf-form4_168435726713505.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 99,701 F1 · shares: Represents an award of Restricted Stock Units ("RSUs") granted on May 15, 2023. 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, 2024. Read SEC document |
| May 12, 2023 Filed May 16, 2023 20:16 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 17,036 | $0.00 | $0.00 |
DisclosureSEC source: 0001897651-23-000007 · wf-form4_168426819500381.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 88,100 F1 · shares: On May 16, 2022, the Reporting Person was granted an award of Performance Stock Units ("PSUs"), which vests over a three-year period from grant in the form of common stock, contingent upon the Issuer's attainment of certain performance objectives between one and three years. On May 12, 2023, the Compensation Committee of the Issuer's Board of Directors determined that the performance objective goals in the PSUs for the period ending March 31, 2023 had been met at 200% of target, for the aggregate number of shares shown. The certified portion of the award shown remains subject to the time-based vesting conditions and is scheduled to vest in part on May 16, 2023, May 16, 2024, and May 16, 2025. Read SEC document |
| February 13, 2023 Filed Feb 14, 2023 21:10 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | Tax withholdingCommon Stock | 7,374 | $43.68 | $322,096.32 |
DisclosureSEC source: 0001897651-23-000004 · wf-form4_167640902131647.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 71,064 F1 · shares: Represents shares withheld to cover taxes due upon the vesting of Restricted Stock Units that were previously granted by the Issuer. Read SEC document |
| February 02, 2023 Filed Feb 6, 2023 21:22 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 18,249 | $41.10 | $750,033.90 |
DisclosureSEC source: 0001897651-23-000002 · wf-form4_167571855092508.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 78,438 F1 · shares: Represents an award of Restricted Stock Units ("RSUs") granted on February 2, 2023. Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest on February 13, 2026. Read SEC document |
| June 03, 2022 Filed Jun 6, 2022 20:39 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 15,949 | $25.08 | $400,000.92 |
DisclosureSEC source: 0001897651-22-000006 · wf-form4_165454795489927.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 60,189 F1 · shares: Represents an award of Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest 75% on June 3, 2023 and 25% on June 3, 2024. Read SEC document |
| May 16, 2022 Filed May 19, 2022 00:30 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 17,036 | $0.00 | $0.00 |
DisclosureSEC source: 0001897651-22-000004 · wf-form4_165292021813851.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 44,240 F1 · shares: Represents an award of Restricted Stock Units ("RSUs") granted on May 16, 2022. Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest in four equal annual installments beginning on May 16, 2023. Read SEC document |
| February 03, 2022 Filed Feb 7, 2022 21:39 UTC | ALLEGRO MICROSYSTEMS, INC. ALGM · Entity 3746 | GrantCommon Stock | 27,204 | $0.00 | $0.00 |
DisclosureSEC source: 0001897651-22-000002 · wf-form4_164426994023843.xml · nonDerivative · entry 1 Briansky Sharon · CIK 0001897651 · SVP, GC and Secretary 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 27,204 F1 · shares: Represents an award of Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest as follows: (i) 60% on February 13, 2023 and (ii) 40% on February 13, 2024. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.