Stocks
ALGM Allegro Microsystems, Inc.

ALGM

Allegro Microsystems, Inc.

Company with tickers: ALGM

CIK

866291

CUSIP

01749D105

Shares Outstanding

186,222,406

Price History Institutional Holders Short Volume Short Interest Fails to Deliver Financials SEC Filings Earnings Calls Insider Trades Congressional Trades

Date	Insider	Role	Type	Shares	Price	Value	After
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	Coleman Troy	SVP, General Manager, Products	Tax	9,670	$43.10	$416,777	81,976
2026-05-16	Briansky Sharon	SVP, GC and Secretary	Tax	13,942	$43.10	$600,900	79,753
2026-05-16	Doogue Michael	Director, President and CEO	Other	252,797	—	—	252,797
2026-05-16	Doogue Michael	Director, President and CEO	Tax	60,508	$43.10	$2,607,895	279,076
2026-05-16	Webster Roald Graham	VP, Chief Accounting Officer	Tax	4,277	$43.10	$184,339	18,323
2026-05-16	Madormo Richard	SVP, Worldwide Sales	Tax	5,439	$43.10	$234,421	74,687
2026-05-16	D'Antilio Derek	EVP, CFO & Treasurer	Tax	37,840	$43.10	$1,630,904	238,813
2026-05-16	Hagen Erin	SVP, CHRO	Tax	5,815	$43.10	$250,627	33,337
2026-05-16	Kent Ian	SVP, Global Operations	Tax	2,345	$43.10	$101,070	28,034
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	Kent Ian	SVP, Global Operations	Award	8,492	—	—	30,379
2026-05-13	Madormo Richard	SVP, Worldwide Sales	Award	19,815	—	—	80,126
2026-05-13	Briansky Sharon	SVP, GC and Secretary	Award	2,611	—	—	93,695
2026-05-13	Briansky Sharon	SVP, GC and Secretary	Award	15,852	—	—	91,084
2026-05-13	D'Antilio Derek	EVP, CFO & Treasurer	Award	30,438	—	—	276,653
2026-05-13	D'Antilio Derek	EVP, CFO & Treasurer	Award	29,439	—	—	246,215
2026-05-13	Coleman Troy	SVP, General Manager, Products	Award	18,116	—	—	91,646
2026-05-13	Doogue Michael	Director, President and CEO	Award	83,700	—	—	339,584
2026-05-13	Doogue Michael	Director, President and CEO	Award	77,135	—	—	255,884
2026-05-13	Doogue Michael	Director, President and CEO	Other	252,797	—	—	252,797
2026-05-13	Hagen Erin	SVP, CHRO	Award	9,058	—	—	39,152
2026-05-13	Webster Roald Graham	VP, Chief Accounting Officer	Award	544	—	—	22,600
2026-05-13	Webster Roald Graham	VP, Chief Accounting Officer	Award	4,756	—	—	22,056
2026-05-13	Willett Robert	Director	Other	0	—	—	0
2026-05-11	Briansky Sharon	SVP, GC and Secretary	Sell	8,948	$47.54	$425,380	75,232
2026-05-11	Doogue Michael	Director, President and CEO	Sell	30,089	$47.23	$1,421,251	252,797
2026-05-11	Doogue Michael	Director, President and CEO	Other	178,749	—	—	178,749
2026-03-24	Madormo Richard	SVP, Worldwide Sales	Other	6,498	$32.58	$211,705	60,311
2026-03-02	Briansky Sharon	SVP, GC and Secretary	Sell	9,727	$35.00	$340,445	84,180
2026-03-02	Hagen Erin	SVP, CHRO	Sell	2,598	$35.00	$90,930	30,094
2026-02-27	Briansky Sharon	SVP, GC and Secretary	Tax	9,107	$36.47	$332,132	93,907
2026-02-27	D'Antilio Derek	EVP, CFO & Treasurer	Tax	9,995	$36.47	$364,518	216,776
2026-02-27	Hagen Erin	SVP, CHRO	Tax	1,996	$36.47	$72,794	32,692
2026-02-17	Briansky Sharon	SVP, GC and Secretary	Sell	9,258	$41.56	$384,762	103,014
2026-02-13	Briansky Sharon	SVP, GC and Secretary	Tax	8,991	$42.38	$381,039	112,272
2026-02-13	D'Antilio Derek	EVP, CFO & Treasurer	Tax	17,808	$42.38	$754,703	226,771
2026-02-02	Kent Ian	SVP, Global Operations	Award	9,183	—	—	21,887
2026-01-05	Kent Ian	SVP, Global Operations	Other	12,704	—	—	12,704
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	Raubacher Jennie	Director	Award	5,932	—	—	14,976
2025-08-07	Lury Richard R.	Director	Award	5,932	—	—	25,857
2025-08-07	PUMA MARY G	Director	Award	5,932	—	—	17,483
2025-08-07	MARTIN JOSEPH R	Director	Award	5,932	—	—	35,179
2025-08-07	Suzuki Yoshihiro	Director	Award	5,932	—	—	213,560
2025-08-07	Palepu Krishna G.	Director	Other	550	—	—	550
2025-08-07	Palepu Krishna G.	Director	Award	5,932	—	—	9,961
2025-08-07	Lynch Susan D	Director	Award	5,932	—	—	29,516
2025-08-04	Hagen Erin	SVP, CHRO	Sell	5,043	$31.18	$157,241	34,688
2025-06-11	Lury Richard R.	Director	Sell	3,100	$30.45	$94,395	19,925
2025-06-04	Lury Richard R.	Director	Sell	6,849	$27.60	$189,036	23,025
2025-05-16	Webster Roald Graham	VP, Chief Accounting Officer	Tax	4,948	$27.51	$136,119	25,566
2025-05-16	Briansky Sharon	SVP, GC and Secretary	Tax	18,712	$27.51	$514,767	149,136
2025-05-16	Doogue Michael	Director, President and CEO	Tax	21,730	$27.51	$597,792	215,549
2025-05-16	Hagen Erin	SVP, CHRO	Tax	4,899	$27.51	$134,771	39,731
2025-05-16	D'Antilio Derek	EVP, CFO & Treasurer	Tax	29,911	$27.51	$822,852	244,579
2025-05-15	Webster Roald Graham	VP, Chief Accounting Officer	Award	9,765	—	—	30,514
2025-05-15	Madormo Richard	SVP, Worldwide Sales	Award	37,557	—	—	66,809
2025-05-15	Briansky Sharon	SVP, GC and Secretary	Award	35,053	—	—	167,848
2025-05-15	Doogue Michael	Director, President and CEO	Award	150,226	—	—	237,279
2025-05-15	Doogue Michael	Director, President and CEO	Other	246,086	—	—	246,086
2025-05-15	Hagen Erin	SVP, CHRO	Award	18,153	—	—	44,630
2025-05-15	D'Antilio Derek	EVP, CFO & Treasurer	Award	65,098	—	—	274,490
2025-05-13	Doogue Michael	Director, President and CEO	Other	246,086	—	—	246,086
2025-05-13	Doogue Michael	Director, President and CEO	Award	18,489	—	—	87,053
2025-05-13	Webster Roald Graham	VP, Chief Accounting Officer	Award	1,002	—	—	20,749
2025-05-13	D'Antilio Derek	EVP, CFO & Treasurer	Award	21,295	—	—	209,392
2025-05-13	Hagen Erin	SVP, CHRO	Award	1,222	—	—	26,477
2025-05-13	Briansky Sharon	SVP, GC and Secretary	Award	14,656	—	—	132,795
2025-03-29	Madormo Richard	SVP, Worldwide Sales	Other	29,252	—	—	29,252
2025-02-27	D'Antilio Derek	EVP, CFO & Treasurer	Award	20,671	—	—	188,097
2025-02-27	Briansky Sharon	SVP, GC and Secretary	Award	18,834	—	—	118,139
2025-02-27	Hagen Erin	SVP, CHRO	Award	4,594	—	—	25,255
2025-01-31	Palepu Krishna G.	Director	Other	550	—	—	550
2025-01-31	Palepu Krishna G.	Director	Award	4,029	—	—	4,029
2025-01-31	Palepu Krishna G.	Director	Other	550	—	—	550
2024-11-18	Glover Max R.	SVP of Worldwide Sales	Tax	2,644	$19.24	$50,871	266,339
2024-11-18	Doogue Michael	Director, President and CEO	Buy	15,000	$19.00	$285,000	246,086
2024-11-18	Doogue Michael	Director, President and CEO	Tax	2,319	$19.24	$44,618	62,404
2024-11-05	Nargolwala Vineet A	EVP, Sensing Solutions	Buy	200	$19.87	$3,974	356,113
2024-11-05	Nargolwala Vineet A	EVP, Sensing Solutions	Buy	4,800	$19.89	$95,472	355,913
2024-08-30	Narayan Suman	SVP, Products	Tax	714	$24.53	$17,514	123,084
2024-08-08	ALDRICH DAVID J	Director	Award	6,873	$26.92	$185,021	26,746
2024-08-08	Suzuki Yoshihiro	Director	Award	6,873	$26.92	$185,021	207,628
2024-08-08	SCHORR PAUL IV	Director	Award	6,873	$26.92	$185,021	10,199
2024-08-08	PUMA MARY G	Director	Award	6,873	$26.92	$185,021	11,551
2024-08-08	MARTIN JOSEPH R	Director	Award	6,873	$26.92	$185,021	29,247
2024-08-08	Lynch Susan D	Director	Award	6,873	$26.92	$185,021	23,584
2024-08-08	Raubacher Jennie	Director	Award	6,873	$26.92	$185,021	9,044
2024-08-08	Lury Richard R.	Director	Award	6,873	$26.92	$185,021	29,874
2024-08-07	Sanken Electric Co., Ltd.	10% Owner	Sell	10,017,315	$23.16	$232,001,015	59,732,782
2024-08-01	Nargolwala Vineet A	EVP, Sensing Solutions	Tax	7,681	$24.17	$185,650	351,113
2024-07-29	Sanken Electric Co., Ltd.	10% Owner	Sell	28,750,000	$23.16	$665,850,000	69,750,097
2024-06-13	Nargolwala Vineet A	EVP, Sensing Solutions	Tax	36,066	$29.12	$1,050,242	358,794