ALGM

ALLEGRO MICROSYSTEMS, INC.

Semiconductors & Related DevicesNasdaqLarge accelerated filer

Total Trades

Buys

Sells

Largest Trade

$1M+

Insiders

Institutional Funds

246

Inst. Value

$1M+

Activist Filings

Insider Trades

Insider	Title	Type	Value	Shares	Price	Date
Briansky Sharon	SVP	SELL	$100K–$500K	10K	$35.00	Mar 3, 2026
Hagen Erin	SVP, CHRO	SELL	$50K–$100K	3K	$35.00	Mar 3, 2026
Briansky Sharon	SVP	SELL	$100K–$500K	9K	$41.56	Feb 18, 2026
Briansky Sharon	SVP	SELL	$500K+	28K	$30.00	Dec 12, 2025
Webster Roald Graham	VP	SELL	$100K–$500K	8K	$32.81	Aug 25, 2025
Lury Richard R.	Director	SELL	$50K–$100K	3K	$30.45	Jun 12, 2025
Lury Richard R.	Director	SELL	$100K–$500K	7K	$27.60	Jun 6, 2025
Doogue Michael	SVP, CTO	BUY	$100K–$500K	15K	$19.00	Nov 19, 2024
Nargolwala Vineet A	President and CEO	BUY	$50K–$100K	5K	$19.89	Nov 6, 2024
Lury Richard R.	Director	SELL	$100K–$500K	9K	$30.00	May 31, 2024
Nargolwala Vineet A	President and CEO	BUY	$15K–$50K	1K	$27.84	Nov 20, 2023
Lynch Susan D	Director	BUY	$1K–$15K	350	$27.37	Nov 15, 2023
D'Antilio Derek	SVP, CFO & Treasurer	BUY	$50K–$100K	1K	$33.63	Sep 18, 2023
MARTIN JOSEPH R	Director	SELL	$500K+	17K	$38.73	Aug 24, 2023
Nargolwala Vineet A	President and CEO	BUY	$100K–$500K	5K	$38.67	Aug 17, 2023
Lury Richard R.	Director	SELL	$100K–$500K	6K	$42.58	Feb 10, 2023
OEP SKNA, L.P.	10% Owner	SELL	$1M+	5.0M	$37.76	Feb 6, 2023
Glover Max R.	SVP of Worldwide S…	SELL	$1M+	40K	$40.13	Feb 6, 2023
Lynch Susan D	Director	BUY	$1K–$15K	240	$41.53	Feb 6, 2023
Glover Max R.	SVP of Worldwide S…	SELL	$500K+	25K	$34.21	Jan 19, 2023
Glover Max R.	SVP of Worldwide S…	SELL	$100K–$500K	15K	$32.06	Jan 13, 2023
Valente Joanne	SVP, CHRO	SELL	$15K–$50K	1K	$30.00	Jan 9, 2023
Valente Joanne	SVP, CHRO	SELL	$15K–$50K	1K	$30.07	Jan 6, 2023
Valente Joanne	SVP, CHRO	SELL	$100K–$500K	8K	$30.10	Jan 4, 2023
Doogue Michael	SVP, CTO	SELL	$1M+	75K	$33.13	Dec 6, 2022
Doogue Michael	SVP, CTO	SELL	$100K–$500K	8K	$31.00	Dec 5, 2022
Doogue Michael	SVP, CTO	SELL	$500K+	24K	$29.25	Nov 17, 2022
Doogue Michael	SVP, CTO	SELL	$1M+	36K	$28.80	Nov 15, 2022
MARTIN JOSEPH R	Director	SELL	$100K–$500K	16K	$25.92	Nov 7, 2022
MARTIN JOSEPH R	Director	SELL	$100K–$500K	8K	$24.17	May 26, 2022
Doogue Michael	SVP of Technology …	SELL	$100K–$500K	8K	$29.04	Mar 21, 2022

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Institutional Ownership

13F filings as of Dec 31, 2025 · 246 funds holding

Fund	Shares	Value	Type
VANGUARD GROUP INC	13.3M	$1M+	SH
Capital Research Global Investors	13.1M	$1M+	SH
STATE STREET CORP	5.4M	$1M+	SH
Clearbridge Investments, LLC	2.9M	$1M+	SH
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	2.0M	$1M+	SH
DIMENSIONAL FUND ADVISORS LP	2.0M	$1M+	SH
GEODE CAPITAL MANAGEMENT, LLC	2.0M	$1M+	SH
Analog Century Management LP	1.9M	$1M+	SH
PRINCIPAL FINANCIAL GROUP INC	1.7M	$1M+	SH
NORGES BANK	1.5M	$1M+	SH
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	1.4M	$1M+	SH
SEGALL BRYANT & HAMILL, LLC	1.2M	$1M+	SH
ALLIANCEBERNSTEIN L.P.	1.1M	$1M+	SH
Point72 Asset Management, L.P.	1.1M	$1M+	SH
Schonfeld Strategic Advisors LLC	755K	$1M+	SH
LOOMIS SAYLES & CO L P	477K	$1M+	SH
S Squared Technology, LLC	457K	$1M+	SH
FIRST TRUST ADVISORS LP	449K	$1M+	SH
RENAISSANCE TECHNOLOGIES LLC	436K	$1M+	SH
Alyeska Investment Group, L.P.	400K	$1M+	SH