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ALGM Insider Trading

Insider Ownership Percentage: 0.50%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $3,586,352.54

Allegro MicroSystems Insider Trading History Chart

This chart shows the insider buying and selling history at Allegro MicroSystems by year and by quarter.

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Allegro MicroSystems Share Price & Price History

Current Price: $41.54
Price Change: ▼ Price Decrease of -2.712 (-6.13%)
As of 08/18/2026 09:46 AM ET

This chart shows the closing price history over time for ALGM up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Allegro MicroSystems Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
8/10/2026Erin HagenSVPSell2,285$44.39$101,431.1531,052View SEC Filing Icon  
6/3/2026Richard MadormoSVPSell5,000$52.72$263,600.0069,687View SEC Filing Icon  
5/21/2026Roald Graham WebsterCAOSell5,217$44.88$234,138.9613,106View SEC Filing Icon  
5/18/2026Ian KentSVPSell2,642$41.56$109,801.5225,392View SEC Filing Icon  
5/14/2026Susan D. LynchDirectorSell16,711$45.46$759,682.0612,805View SEC Filing Icon  
5/11/2026Michael DoogueCEOSell30,089$47.23$1,421,103.47252,797View SEC Filing Icon  
5/11/2026Sharon BrianskySVPSell8,948$47.54$425,387.9275,232View SEC Filing Icon  
8/22/2025Roald Graham WebsterCAOSell8,266$32.81$271,207.4617,300View SEC Filing Icon  
11/18/2024Michael DoogueSVPBuy15,000$19.00$285,000.00246,086View SEC Filing Icon  
8/7/2024Electric Co. Ltd. SankenMajor ShareholderSell10,017,315$23.16$232,001,015.4059,732,782View SEC Filing Icon  
7/29/2024Electric Co. Ltd. SankenMajor ShareholderSell28,750,000$23.16$665,850,000.0069,750,097View SEC Filing Icon  
5/30/2024Richard R LuryDirectorSell8,500$30.00$255,000.0023,001View SEC Filing Icon  
11/17/2023Vineet A. NargolwalaCEOBuy1,000$27.84$27,840.00302,161View SEC Filing Icon  
9/15/2023Derek D'AntilioCFOBuy1,488$33.63$50,041.44142,899View SEC Filing Icon  
8/23/2023Joseph R. MartinDirectorSell17,000$38.73$658,410.0022,374View SEC Filing Icon  
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SEC Filings (Institutional Ownership Changes) for Allegro MicroSystems (NASDAQ:ALGM)

56.45% of Allegro MicroSystems stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at ALGM by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Allegro MicroSystems Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/18/2026United Capital Financial Advisors LLC3,414$0.24M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/18/2026Public Employees Retirement System of Ohio36,089$2.51M0.0%N/A0.019%Search for SEC Filing on Google Icon
8/17/2026Transamerica Financial Advisors LLC386$27K0.0%N/A0.000%Search for SEC Filing on Google Icon
8/17/2026Corient Private Wealth LP19,406$1.35M0.0%N/A0.010%Search for SEC Filing on Google Icon
8/17/2026Bank of America Corp DE921,728$64.17M0.0%N/A0.494%Search for SEC Filing on Google Icon
8/15/2026Freestone Grove Partners LP4,859$0.34M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/15/2026Odyssean LLC4,034$0.28M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/15/2026Man Group plc95,101$6.62M0.0%N/A0.051%Search for SEC Filing on Google Icon
8/15/2026First Bancorp Inc ME 700$49K0.0%N/A0.000%Search for SEC Filing on Google Icon
8/15/2026Jupiter Topco LLC57,329$3.99M0.0%N/A0.031%Search for SEC Filing on Google Icon
8/14/2026Hsbc Holdings PLC26,862$1.87M0.0%N/A0.014%Search for SEC Filing on Google Icon
8/14/2026Canada Pension Plan Investment Board44,000$3.06M0.0%N/A0.024%Search for SEC Filing on Google Icon
8/14/2026Castleark Management LLC141,900$9.88M0.3%N/A0.076%Search for SEC Filing on Google Icon
8/14/2026Legal & General Group Plc164,734$11.47M0.0%N/A0.088%Search for SEC Filing on Google Icon
8/14/2026The Manufacturers Life Insurance Company 91,616$6.38M0.0%N/A0.049%Search for SEC Filing on Google Icon
8/14/2026S Squared Technology LLC332,451$23.15B7.2%N/A0.178%Search for SEC Filing on Google Icon
8/14/2026Whalen Wealth Management Inc.6,399$0.45M0.2%N/A0.003%Search for SEC Filing on Google Icon
8/14/2026Algert Global LLC65,240$4.54M0.1%+868.0%0.035%Search for SEC Filing on Google Icon
8/13/2026Sanctuary Advisors LLC4,698$0.33M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/13/2026Meiji Yasuda Asset Management Co Ltd.2,873$0.20M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/12/2026Elevation Point Wealth Partners LLC6,340$0.44M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/12/2026Commerce Bank15,646$1.09M0.0%N/A0.008%Search for SEC Filing on Google Icon
8/12/2026Quantbot Technologies LP1,284$89K0.0%N/A0.001%Search for SEC Filing on Google Icon
8/12/2026Evolve Private Wealth LLC8,428$0.59M0.0%N/A0.005%Search for SEC Filing on Google Icon
8/12/2026Rakuten Securities Inc.439$31K0.0%N/A0.000%Search for SEC Filing on Google Icon
8/12/2026Callan Family Office LLC4,138$0.29M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/11/2026Allworth Financial LP1,517$0.11M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/11/2026Trillium Asset Management LLC143,348$9.98M0.3%N/A0.077%Search for SEC Filing on Google Icon
8/11/2026Vise Technologies Inc.4,496$0.31M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/11/2026Lisanti Capital Growth LLC107,865$7.51M1.7%N/A0.058%Search for SEC Filing on Google Icon
8/10/2026Csenge Advisory Group17,210$1.20M0.0%N/A0.009%Search for SEC Filing on Google Icon
8/8/2026Meeder Advisory Services Inc.4,159$0.29M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/7/2026BlackRock Inc.13,889,324$966.98M0.0%N/A7.451%Search for SEC Filing on Google Icon
8/7/2026Deutsche Bank AG88,759$6.18M0.0%N/A0.048%Search for SEC Filing on Google Icon
8/7/2026Perigon Wealth Management LLC3,916$0.27M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/7/2026Mitsubishi UFJ Asset Management Co. Ltd.43,188$3.01M0.0%N/A0.023%Search for SEC Filing on Google Icon
8/6/2026Nippon Life Global Investors Americas Inc.143,870$10.02M0.4%N/A0.077%Search for SEC Filing on Google Icon
8/6/2026Global Retirement Partners LLC4,149$0.29M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/6/2026Bank of New York Mellon Corp716,952$49.91M0.0%N/A0.385%Search for SEC Filing on Google Icon
8/6/2026State of Wyoming32,269$2.25M0.2%N/A0.017%Search for SEC Filing on Google Icon
8/6/2026GSA Capital Partners LLP3,533$0.25M0.0%N/A0.002%Search for SEC Filing on Google Icon
7/10/2026Handelsbanken Fonder AB59,900$4.17M0.0%+49.8%0.032%Search for SEC Filing on Google Icon
7/10/2026Fulton Bank N.A.4,623$0.32M0.0%N/A0.002%Search for SEC Filing on Google Icon
7/7/2026Harbor Investment Advisory LLC1,032$72K0.0%N/A0.001%Search for SEC Filing on Google Icon
6/18/2026Pacer Advisors Inc.19,744$0.62M0.0%-38.9%0.011%Search for SEC Filing on Google Icon
6/3/2026Parallel Advisors LLC1,008$32K0.0%+42.8%0.001%Search for SEC Filing on Google Icon
5/22/2026Segall Bryant & Hamill LLC1,044,984$32.95M0.4%-16.3%0.564%Search for SEC Filing on Google Icon
5/19/2026Bank of America Corp DE855,453$26.97M0.0%+48.3%0.462%Search for SEC Filing on Google Icon
5/18/2026California State Teachers Retirement System149,826$4.72M0.0%+21.8%0.081%Search for SEC Filing on Google Icon
5/18/2026Royal Bank of Canada30,337$0.96M0.0%-19.2%0.016%Search for SEC Filing on Google Icon
5/16/2026The Manufacturers Life Insurance Company81,072$2.56M0.0%-1.4%0.044%Search for SEC Filing on Google Icon
5/16/2026Maverick Capital Ltd.42,224$1.33M0.0%N/A0.023%Search for SEC Filing on Google Icon
5/16/2026Quantinno Capital Management LP133,902$4.22M0.0%+104.9%0.072%Search for SEC Filing on Google Icon
5/16/2026Castleark Management LLC147,420$4.65M0.2%N/A0.080%Search for SEC Filing on Google Icon
5/15/2026Granahan Investment Management LLC215,001$6.78M0.3%+139.3%0.116%Search for SEC Filing on Google Icon
5/15/2026Entropy Technologies LP67,719$2.14M0.1%+88.7%0.037%Search for SEC Filing on Google Icon
5/14/2026Renaissance Technologies LLC123,900$3.91M0.0%-71.6%0.067%Search for SEC Filing on Google Icon
5/14/2026Public Employees Retirement System of Ohio36,618$1.16M0.0%-3.4%0.020%Search for SEC Filing on Google Icon
5/14/2026Sei Investments Co.218,976$6.90M0.0%+126.0%0.118%Search for SEC Filing on Google Icon
5/14/2026State of Wyoming13,834$0.44M0.1%+29.7%0.007%Search for SEC Filing on Google Icon
5/13/2026Cetera Investment Advisers11,656$0.37M0.0%-2.1%0.006%Search for SEC Filing on Google Icon
5/13/2026First Trust Advisors LP414,897$13.08M0.0%-7.6%0.224%Search for SEC Filing on Google Icon
5/8/2026PNC Financial Services Group Inc.13,949$0.44M0.0%+18.0%0.008%Search for SEC Filing on Google Icon
5/7/2026Dimensional Fund Advisors LP2,170,487$68.40M0.0%+1.4%1.171%Search for SEC Filing on Google Icon
5/7/2026Parallel Advisors LLC1,008$32K0.0%+42.8%0.001%Search for SEC Filing on Google Icon
5/7/2026KBC Group NV4,581$0.14M0.0%+24.0%0.002%Search for SEC Filing on Google Icon
5/7/2026SEB Asset Management AB7,798$0.25M0.0%N/A0.004%Search for SEC Filing on Google Icon
5/7/2026Swiss National Bank256,400$8.08M0.0%+0.4%0.138%Search for SEC Filing on Google Icon
5/7/2026Roubaix Capital LLC169,993$5.36M2.5%N/A0.092%Search for SEC Filing on Google Icon
5/6/2026Assetmark Inc.6,338$0.20M0.0%+12.5%0.003%Search for SEC Filing on Google Icon
5/6/2026Lightrock Netherlands B.V.507,990$16.02M1.6%+43.3%0.274%Search for SEC Filing on Google Icon
5/6/2026Allspring Global Investments Holdings LLC307,624$10.24M0.0%-13.6%0.166%Search for SEC Filing on Google Icon
5/5/2026Bank of New York Mellon Corp743,292$23.44M0.0%-1.0%0.401%Search for SEC Filing on Google Icon
5/5/2026Maryland State Retirement & Pension System6,797$0.21M0.0%N/A0.004%Search for SEC Filing on Google Icon
5/4/2026State of Michigan Retirement System29,900$0.94M0.0%+2.0%0.016%Search for SEC Filing on Google Icon
5/4/2026Principal Financial Group Inc.1,790,466$56.45M0.0%+2.8%0.966%Search for SEC Filing on Google Icon
5/4/2026Teachers Retirement System of The State of Kentucky40,633$1.28M0.0%+2.5%0.022%Search for SEC Filing on Google Icon
5/1/2026Fifth Third Bancorp29,063$0.92M0.0%+2,377.7%0.016%Search for SEC Filing on Google Icon
5/1/2026Candriam S.C.A.86,073$2.71M0.0%-2.1%0.046%Search for SEC Filing on Google Icon
4/30/2026Hsbc Holdings PLC18,355$0.58M0.0%-53.9%0.010%Search for SEC Filing on Google Icon
4/30/2026Oregon Public Employees Retirement Fund25,437$0.80M0.0%+2.8%0.014%Search for SEC Filing on Google Icon
4/28/2026Praxis Investment Management Inc.6,590$0.21M0.0%N/A0.004%Search for SEC Filing on Google Icon
4/27/2026New York State Teachers Retirement System28,178$0.89M0.0%-12.5%0.015%Search for SEC Filing on Google Icon
4/27/2026Y Intercept Hong Kong Ltd45,132$1.42M0.0%N/A0.024%Search for SEC Filing on Google Icon
4/27/2026Elevation Point Wealth Partners LLC7,690$0.24M0.0%N/A0.004%Search for SEC Filing on Google Icon
4/25/2026Keybank National Association OH12,380$0.39M0.0%-8.7%0.007%Search for SEC Filing on Google Icon
4/24/2026Peregrine Capital Management LLC259,764$8.19M0.3%-4.1%0.140%Search for SEC Filing on Google Icon
4/22/2026Pictet Asset Management Holding SA22,377$0.71M0.0%+7.6%0.012%Search for SEC Filing on Google Icon
4/22/2026Sterling Capital Management LLC4,129$0.13M0.0%-43.3%0.002%Search for SEC Filing on Google Icon
4/21/2026Louisiana State Employees Retirement System36,000$1.14M0.0%N/A0.019%Search for SEC Filing on Google Icon
4/16/2026SG Americas Securities LLC5,245$0.17M0.0%-64.5%0.003%Search for SEC Filing on Google Icon
3/20/2026Hsbc Holdings PLC39,811$1.05M0.0%-54.2%0.021%Search for SEC Filing on Google Icon
3/17/2026Rockefeller Capital Management L.P.16,876$0.45M0.0%+470.5%0.009%Search for SEC Filing on Google Icon
3/9/2026Corient Private Wealth LLC14,457$0.41M0.0%+44.1%0.008%Search for SEC Filing on Google Icon
2/24/2026Pacer Advisors Inc.32,313$0.85M0.0%+98.1%0.017%Search for SEC Filing on Google Icon
2/19/2026T. Rowe Price Investment Management Inc.349,349$9.22M0.0%-67.8%0.189%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.7,651,051$201.84M0.0%+44.0%4.129%Search for SEC Filing on Google Icon
2/19/2026Corient Private Wealth LLC15,345$0.41M0.0%+52.9%0.008%Search for SEC Filing on Google Icon
2/18/2026Mercer Global Advisors Inc. ADV10,502$0.28M0.0%+23.2%0.006%Search for SEC Filing on Google Icon
2/18/2026State of Tennessee Department of Treasury79,237$2.09M0.0%-8.5%0.043%Search for SEC Filing on Google Icon
Data available starting January 2016

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Allegro MicroSystems logo
Allegro MicroSystems, Inc., together with its subsidiaries, designs, develops, manufactures, and markets sensor integrated circuits (ICs) and application-specific analog power ICs for motion control and energy-efficient systems. Its products include magnetic sensor ICs, such as position, speed, and current sensor ICs; and power ICs comprising motor driver ICs, regulator and LED driver ICs, and isolated gate drivers. The company sells its products to original equipment manufacturers and distributors primarily in the automotive and industrial markets through its direct sales force, third party distributors, independent sales representatives, and consignment. It operates in the United States, rest of the Americas, Europe, Japan, Greater China, South Korea, and other Asian markets. The company was founded in 1990 and is headquartered in Manchester, New Hampshire. Allegro MicroSystems, Inc. is a subsidiary of Sanken Electric Co., Ltd.
Read More on Allegro MicroSystems

Today's Range

Now: $41.54
Low: $42.30
High: $42.30

50 Day Range

MA: $50.40
Low: $41.45
High: $69.62

52 Week Range

Now: $41.54
Low: $22.41
High: $71.77

Volume

9,342 shs

Average Volume

2,572,723 shs

Market Capitalization

$7.74 billion

P/E Ratio

703.17

Dividend Yield

N/A

Beta

1.94

Who are the company insiders with the largest holdings of Allegro MicroSystems?

Allegro MicroSystems' top insider investors include:
  1. Skna LP Oep (Major Shareholder)
  2. Electric Co Ltd Sanken (Major Shareholder)
  3. Ravi Vig (CEO)
  4. Vineet A Nargolwala (CEO)
  5. Max R Glover (SVP)
  6. Michael Doogue (CEO)
  7. Michael Doogue (SVP)
  8. Reza Kazerounian (Director)
  9. Christopher Brown (Insider)
  10. Christopher Brown (VP)
Learn More about top insider investors at Allegro MicroSystems.

Who are the major institutional investors of Allegro MicroSystems?

Allegro MicroSystems' top institutional investors include:
  1. BlackRock Inc. — 7.45%
  2. Bank of America Corp DE — 0.49%
  3. Bank of New York Mellon Corp — 0.38%
  4. S Squared Technology LLC — 0.18%
  5. Legal & General Group Plc — 0.09%
  6. Nippon Life Global Investors Americas Inc. — 0.08%
Learn More about top institutional investors of Allegro MicroSystems stock.

Which major investors are buying Allegro MicroSystems stock?

During the last quarter, ALGM stock was bought by institutional investors including:
  1. BlackRock Inc.
  2. Bank of America Corp DE
  3. Bank of New York Mellon Corp
  4. S Squared Technology LLC
  5. Legal & General Group Plc
  6. Nippon Life Global Investors Americas Inc.
  7. Trillium Asset Management LLC
  8. Castleark Management LLC

Allegro MicroSystems Active Insiders

Ravi Vig
Ravi Vig (Age 65)
CEO
Vineet A Nargolwala
Vineet A Nargolwala (Age 53)
CEO
Richard Madormo
Senior Vice President, Worldwide Sales
1 recent trades
Paul V Walsh Jr
Paul V Walsh Jr (Age 67)
CFO
Derek D'antilio
Derek D'antilio
CFO
Richard R Lury
Richard R Lury
Director
Noriharu Fujita
Noriharu Fujita
Director
Joseph R Martin
Joseph R Martin
Director
Reza Kazerounian
Reza Kazerounian
Director
Susan D Lynch
Susan D Lynch
Director
1 recent trades
Michael Doogue
Michael Doogue (Age 51)
SVP
1 recent trades
Thomas C Jr. Teebagy
Thomas C Jr. Teebagy (Age 67)
SVP
Max R Glover
Max R Glover (Age 44)
SVP
Joanne Valente
Joanne Valente (Age 61)
SVP
Sharon Briansky
Sharon Briansky (Age 52)
SVP
1 recent trades
Ian Kent
Ian Kent
SVP
1 recent trades
Erin Hagen
Erin Hagen (Age 49)
SVP
1 recent trades
Christopher Brown
Christopher Brown (Age 59)
VP