Allegro MicroSystems, Inc. Insider Trading

ALGM

Last 12 months

Insiders sold $5.22M and bought nothing on the open market.

33% of the selling was scheduled in advance under 10b5-1 plans. President and CEO Michael Doogue sold $1.42M on May 11, 6.5% of their stake, outside a plan. The last open-market buy by an executive or director was in Nov 2024.

Net open-market

−$5.22M

0 buys · 13 sales

Under a 10b5-1 plan

33%

of the value sold

Insiders who bought / sold

0 / 9

executives and directors

Last open-market buy

Nov 2024

Nov 18, 2024

Get an email when ALGM's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Aug 17	Jennie Raubacher Director	Sold10b5-1 plan	1,000	$45.32	45K	6.7%	Form 4
Aug 10	Erin Hagen SVP, CHRO	Sold10b5-1 plan	2,285	$44.39	101K	6.9%	Form 4
Jun 3	Richard Madormo SVP, Worldwide Sales	SoldNo plan	5,000	$52.72	264K	6.7%	Form 4
May 22	Troy Coleman SVP, General Manager, Products	SoldNo plan	4,500	$45.72	206K	5.5%	Form 4
May 21	Roald Graham Webster VP, Chief Accounting Officer	SoldNo plan	5,217	$44.89	234K	28%	Form 4
May 18	Ian Kent SVP, Global Operations	SoldNo plan	2,642	$41.56	110K	9.4%	Form 4
May 14	Susan D Lynch Director	SoldNo plan	16,711	$45.46	760K	57%	Form 4
May 11	Sharon Briansky SVP, GC and Secretary	SoldNo plan	8,948	$47.54	425K	11%	Form 4
May 11	Michael Doogue President and CEO	SoldNo plan	30,089	$47.23	$1.42M	6.5%	Form 4
Mar 2	Sharon Briansky SVP, GC and Secretary	Sold10b5-1 plan	9,727	$35.00	340K	10%	Form 4
Mar 2	Erin Hagen SVP, CHRO	SoldNo plan	2,598	$35.00	91K	7.9%	Form 4
Feb 17	Sharon Briansky SVP, GC and Secretary	Sold10b5-1 plan	9,258	$41.56	385K	8.2%	Form 4
Dec 10, 2025	Sharon Briansky SVP, GC and Secretary	Sold10b5-1 plan	27,873	$30.00	836K	19%	Form 4
Aug 22, 2025	Roald Graham Webster VP, Chief Accounting Officer	SoldNo plan	8,266	$32.81	271K	32%	Form 4
Aug 12, 2025	Richard R. Lury Director	SoldNo plan	7,000	$31.81	223K	27%	Form 4
Aug 4, 2025	Erin Hagen SVP, CHRO	SoldNo plan	5,043	$31.18	157K	13%	Form 4
Jun 11, 2025	Richard R. Lury Director	SoldNo plan	3,100	$30.45	94K	13%	Form 4
Jun 4, 2025	Richard R. Lury Director	SoldNo plan	6,849	$27.60	189K	23%	Form 4
Nov 18, 2024	Michael Doogue SVP, CTO	Bought	15,000	$19.00	285K	5.1%	Form 4

Aug 1710b5-1 plan
Jennie Raubacher
Director · sold 1,000 at $45.32
45K
6.7% of stake
Aug 1010b5-1 plan
Erin Hagen
SVP, CHRO · sold 2,285 at $44.39
101K
6.9% of stake
Jun 3No plan
Richard Madormo
SVP, Worldwide Sales · sold 5,000 at $52.72
264K
6.7% of stake
May 22No plan
Troy Coleman
SVP, General Manager, Products · sold 4,500 at $45.72
206K
5.5% of stake
May 21No plan
Roald Graham Webster
VP, Chief Accounting Officer · sold 5,217 at $44.89
234K
28% of stake
May 18No plan
Ian Kent
SVP, Global Operations · sold 2,642 at $41.56
110K
9.4% of stake
May 14No plan
Susan D Lynch
Director · sold 16,711 at $45.46
760K
57% of stake
May 11No plan
Sharon Briansky
SVP, GC and Secretary · sold 8,948 at $47.54
425K
11% of stake
May 11No plan
Michael Doogue
President and CEO · sold 30,089 at $47.23
$1.42M
6.5% of stake
Mar 210b5-1 plan
Sharon Briansky
SVP, GC and Secretary · sold 9,727 at $35.00
340K
10% of stake
Mar 2No plan
Erin Hagen
SVP, CHRO · sold 2,598 at $35.00
91K
7.9% of stake
Feb 1710b5-1 plan
Sharon Briansky
SVP, GC and Secretary · sold 9,258 at $41.56
385K
8.2% of stake
Dec 10, 202510b5-1 plan
Sharon Briansky
SVP, GC and Secretary · sold 27,873 at $30.00
836K
19% of stake
Aug 22, 2025No plan
Roald Graham Webster
VP, Chief Accounting Officer · sold 8,266 at $32.81
271K
32% of stake
Aug 12, 2025No plan
Richard R. Lury
Director · sold 7,000 at $31.81
223K
27% of stake
Aug 4, 2025No plan
Erin Hagen
SVP, CHRO · sold 5,043 at $31.18
157K
13% of stake
Jun 11, 2025No plan
Richard R. Lury
Director · sold 3,100 at $30.45
94K
13% of stake
Jun 4, 2025No plan
Richard R. Lury
Director · sold 6,849 at $27.60
189K
23% of stake
Nov 18, 2024
Michael Doogue
SVP, CTO · bought 15,000 at $19.00
285K
5.1% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch ALGM, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Held by ETFs

ALGM is in 98 US ETFs. The largest of them, with ALGM's weight in each:

Spot a number that looks wrong? Check it in ALGM's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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