Welcome to our dedicated page for Allegro Microsystems SEC filings (Ticker: ALGM), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Allegro MicroSystems filings document financial results, material financing agreements, governance votes and proxy disclosures for a semiconductor company focused on power and sensing solutions. Recent Form 8-K reports furnish quarterly and fiscal-year operating results and disclose amendments to the company’s credit agreement, including term-loan refinancing and related debt obligations.
Proxy and annual-meeting filings cover board elections, auditor ratification, advisory executive-compensation votes and compensation disclosures. The filing record also documents capital-structure matters, shareholder voting outcomes and formal exhibits for material agreements that support the company’s public reporting framework.
Allegro MicroSystems Inc ownership disclosure: The Vanguard Group filed an amendment reporting 0 shares beneficially owned and 0 % of Allegro MicroSystems Inc common stock as of the filing. The amendment cites an internal realignment and reliance on SEC Release No. 34-39538 (January 12, 1998) that resulted in separate, disaggregated reporting by certain Vanguard subsidiaries.
ALLEGRO MICROSYSTEMS, INC. senior vice president of worldwide sales Richard Madormo reported a routine tax-related share disposition. On this Form 4, 6,498 shares of common stock were surrendered at $32.58 per share to cover taxes due upon the vesting of previously granted restricted stock units. After this withholding, Madormo directly holds 60,311 shares of Allegro common stock, indicating he retains a substantial equity stake while settling the tax obligation tied to his equity compensation.
Allegro MicroSystems senior vice president of global operations Ian Kent reported an equity award rather than an open-market trade. He acquired 9,183 restricted stock units (RSUs) on February 2, 2026, each representing one share of common stock, bringing his direct holdings to 21,887 shares. The RSUs vest in two stages, with 60% scheduled to vest on February 13, 2027 and the remaining 40% on February 13, 2028. The filing notes it was submitted late due to an administrative error, not an error by the reporting person.
Allegro MicroSystems SVP, GC and Secretary Sharon Briansky reported two stock transactions. She completed an open-market sale of 9,727 shares of common stock at $35.00 per share on March 2, 2026, executed under a pre-arranged Rule 10b5-1 trading plan.
In a separate transaction on February 27, 2026, 9,107 shares were withheld to cover taxes due upon the vesting of previously granted restricted stock units. After these transactions, she directly holds 84,180 shares of Allegro MicroSystems common stock.
Allegro MicroSystems EVP, CFO & Treasurer Derek D’Antilio reported a tax-related share disposition. On this Form 4, 9,995 shares of common stock were withheld at a price of $36.47 per share to cover taxes due upon the vesting of previously granted restricted stock units. After this withholding, D’Antilio directly owns 216,776 Allegro MicroSystems shares.
Allegro MicroSystems SVP and CHRO Erin Hagen reported two stock transactions in company shares. On March 2, 2026, Hagen completed an open-market sale of 2,598 shares of common stock at $35.00 per share, leaving 30,094 shares of direct ownership after the sale.
On February 27, 2026, Hagen disposed of 1,996 shares of common stock at $36.47 per share to cover taxes due upon the vesting of previously granted restricted stock units, as indicated by the footnote. Both transactions involve directly held common stock.
Form 144 filing for ALGM: The filing lists reported dispositions by Sharon Briansky of 27,873 common shares on 12/10/2025 and 9,258 common shares on 02/17/2026. The filing also records a Restricted Stock Vesting event of 9,727 common shares on 02/27/2026.
ALLEGRO MICROSYSTEMS, INC. senior vice president and general counsel Sharon Briansky reported two transactions in the company’s common stock. On February 17, 2026, she executed an open-market sale of 9,258 shares at $41.56 per share, leaving 103,014 shares held directly afterward.
On February 13, 2026, 8,991 shares at $42.38 per share were disposed of to cover taxes due upon the vesting of previously granted restricted stock units, rather than as a discretionary sale. The filing notes that the reported sales were made under a Rule 10b5-1 trading plan adopted by the reporting person.
ALLEGRO MICROSYSTEMS, INC. executive Derek D’Antilio, EVP, CFO & Treasurer, reported an automatic share disposition tied to equity compensation. On this Form 4, 17,808 shares of common stock were withheld at $42.38 per share to cover taxes due when previously granted restricted stock units vested. After this tax-withholding event, he held 226,771 shares of Allegro common stock directly. This reflects routine administration of stock-based compensation rather than an open-market sale.