ALGM

Allegro Microsystems, Inc.

Company with tickers: ALGM

Market Cap

$11.20B

Shares Outstanding

186,222,406

CIK

866291

CUSIP

01749D105

13F Activity (30d)

6 filings 5 filers

Website

Visit website

Trades by corporate insiders — officers, directors and holders of more than 10% of the shares — disclosed to the SEC on Forms 3, 4 and 5. Form 4 must be filed within two business days of the trade.

Insider Sentiment Score

Peer-relative 0–100 rank of how aggressively insiders accumulated over the trailing 90 days. See the full ranking.

Net buyers

-7

Net shares bought

-0.04%

Net buy value

-$3,419,562

Date	Insider	Role	Type	Shares	Price	Value	After
2026-06-17	WHITE BRIAN C	Director	Award	594	—	—	594
2026-06-17	WHITE BRIAN C	Director	Other	0	—	—	0
2026-06-03	Madormo Richard	SVP, Worldwide Sales	Sell	5,000	$52.72	$263,600	69,687
2026-05-22	Coleman Troy	SVP, General Manager, Products	Sell	4,500	$45.72	$205,740	77,476
2026-05-21	Webster Roald Graham	VP, Chief Accounting Officer	Sell	5,217	$44.89	$234,165	13,106
2026-05-18	Kent Ian	SVP, Global Operations	Sell	2,642	$41.56	$109,802	25,392
2026-05-16	Briansky Sharon	SVP, GC and Secretary	Tax	13,942	$43.10	$600,900	79,753
2026-05-16	Coleman Troy	SVP, General Manager, Products	Tax	9,670	$43.10	$416,777	81,976
2026-05-16	Kent Ian	SVP, Global Operations	Tax	2,345	$43.10	$101,070	28,034
2026-05-16	Doogue Michael	Director, President and CEO	Tax	60,508	$43.10	$2,607,895	279,076
2026-05-16	Madormo Richard	SVP, Worldwide Sales	Tax	5,439	$43.10	$234,421	74,687
2026-05-16	Hagen Erin	SVP, CHRO	Tax	5,815	$43.10	$250,627	33,337
2026-05-16	Webster Roald Graham	VP, Chief Accounting Officer	Tax	4,277	$43.10	$184,339	18,323
2026-05-16	D'Antilio Derek	EVP, CFO & Treasurer	Tax	37,840	$43.10	$1,630,904	238,813
2026-05-14	Lynch Susan D	Director	Sell	16,711	$45.46	$759,625	12,805
2026-05-13	Willett Robert	Director	Award	1,094	—	—	1,094
2026-05-13	Briansky Sharon	SVP, GC and Secretary	Award	15,852	—	—	91,084
2026-05-13	Kent Ian	SVP, Global Operations	Award	8,492	—	—	30,379
2026-05-13	Willett Robert	Director	Other	0	—	—	0
2026-05-13	D'Antilio Derek	EVP, CFO & Treasurer	Award	29,439	—	—	246,215
2026-05-13	Briansky Sharon	SVP, GC and Secretary	Award	2,611	—	—	93,695
2026-05-13	Webster Roald Graham	VP, Chief Accounting Officer	Award	4,756	—	—	22,056
2026-05-13	Madormo Richard	SVP, Worldwide Sales	Award	19,815	—	—	80,126
2026-05-13	Doogue Michael	Director, President and CEO	Award	77,135	—	—	255,884
2026-05-13	Webster Roald Graham	VP, Chief Accounting Officer	Award	544	—	—	22,600
2026-05-13	D'Antilio Derek	EVP, CFO & Treasurer	Award	30,438	—	—	276,653
2026-05-13	Coleman Troy	SVP, General Manager, Products	Award	18,116	—	—	91,646
2026-05-13	Hagen Erin	SVP, CHRO	Award	9,058	—	—	39,152
2026-05-13	Doogue Michael	Director, President and CEO	Award	83,700	—	—	339,584
2026-05-11	Doogue Michael	Director, President and CEO	Sell	30,089	$47.23	$1,421,251	252,797
2026-05-11	Briansky Sharon	SVP, GC and Secretary	Sell	8,948	$47.54	$425,380	75,232
2026-03-24	Madormo Richard	SVP, Worldwide Sales	Other	6,498	$32.58	$211,705	60,311
2026-03-02	Hagen Erin	SVP, CHRO	Sell	2,598	$35.00	$90,930	30,094
2026-03-02	Briansky Sharon	SVP, GC and Secretary	Sell	9,727	$35.00	$340,445	84,180
2026-02-27	Hagen Erin	SVP, CHRO	Tax	1,996	$36.47	$72,794	32,692
2026-02-27	D'Antilio Derek	EVP, CFO & Treasurer	Tax	9,995	$36.47	$364,518	216,776
2026-02-27	Briansky Sharon	SVP, GC and Secretary	Tax	9,107	$36.47	$332,132	93,907
2026-02-17	Briansky Sharon	SVP, GC and Secretary	Sell	9,258	$41.56	$384,762	103,014
2026-02-13	D'Antilio Derek	EVP, CFO & Treasurer	Tax	17,808	$42.38	$754,703	226,771
2026-02-13	Briansky Sharon	SVP, GC and Secretary	Tax	8,991	$42.38	$381,039	112,272
2026-02-02	Kent Ian	SVP, Global Operations	Award	9,183	—	—	21,887
2025-12-10	Briansky Sharon	SVP, GC and Secretary	Sell	27,873	$30.00	$836,190	121,263
2025-11-11	Coleman Troy	SVP, General Manager, Products	Award	73,530	—	—	73,530
2025-10-13	Coleman Troy	SVP, General Manager, Products	Other	0	—	—	0
2025-08-22	Webster Roald Graham	VP, Chief Accounting Officer	Sell	8,266	$32.81	$271,193	17,300
2025-08-12	Lury Richard R.	Director	Sell	7,000	$31.81	$222,673	18,857
2025-08-07	PUMA MARY G	Director	Award	5,932	—	—	17,483
2025-08-07	Palepu Krishna G.	Director	Award	5,932	—	—	9,961
2025-08-07	Suzuki Yoshihiro	Director	Award	5,932	—	—	213,560
2025-08-07	Raubacher Jennie	Director	Award	5,932	—	—	14,976

Showing 1–50 of 443 transactions