Livermore

ALLEGRO MICROSYSTEMS, INC.

ALGM
Exchange
Nasdaq
Industry
Semiconductors & Related Devices
SEC CIK
0000866291

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateInsiderTransactionSharesAvg priceValueShares afterHolding changeFiling
Aug 18, 20264:15 PM ETAug 17, 2026Raubacher JennieDirectorSSaleCommon Stock−1K$45.32−$45.32K13.98K−6.7%SEC
Aug 12, 20264:16 PM ETAug 10, 2026Hagen ErinSVP, CHROSSaleCommon Stock−2.29K$44.39−$101.43K31.05K−6.9%SEC
Jun 4, 2026Jun 3, 2026Madormo RichardSVP, Worldwide SalesSSaleCommon Stock−5K$52.72−$263.6K69.69K−6.7%SEC
May 26, 2026May 22, 2026Coleman TroySVP, General Manager, ProductsSSaleCommon Stock−4.5K$45.72−$205.74K77.48K−5.5%SEC
May 22, 2026May 21, 2026Webster Roald GrahamVP, Chief Accounting OfficerSSaleCommon Stock−5.22K$44.89−$234.19K13.11K−28.5%SEC
May 19, 2026May 18, 2026Kent IanSVP, Global OperationsSSaleCommon Stock−2.64K$41.56−$109.8K25.39K−9.4%SEC
May 15, 2026May 14, 2026Lynch Susan DDirectorSSaleCommon Stock−16.71K$45.46−$759.68K12.81K−56.6%SEC
May 13, 2026May 11, 2026Briansky SharonSVP, GC and SecretarySSaleCommon Stock−8.95K$47.54−$425.39K75.23K−10.6%SEC
May 13, 2026May 11, 2026Doogue MichaelPresident and CEOSSaleCommon Stock−30.09K$47.23−$1.42M252.8K−10.6%SEC
Mar 3, 2026Mar 2, 2026Briansky SharonSVP, GC and SecretarySSaleCommon Stock−9.73K$35.00−$340.45K84.18K−10.4%SEC
Mar 3, 2026Mar 2, 2026Hagen ErinSVP, CHROSSaleCommon Stock−2.6K$35.00−$90.93K30.09K−7.9%SEC
Feb 18, 2026Feb 17, 2026Briansky SharonSVP, GC and SecretarySSaleCommon Stock−9.26K$41.56−$384.76K103.01K−8.2%SEC
Dec 12, 2025Dec 10, 2025Briansky SharonSVP, GC and SecretarySSaleCommon Stock−27.87K$30.00−$836.19K121.26K−18.7%SEC
Aug 25, 2025Aug 22, 2025Webster Roald GrahamVP, Chief Accounting OfficerSSaleCommon Stock−8.27K$32.81−$271.21K17.3K−32.3%SEC
Aug 13, 2025Aug 12, 2025Lury Richard R.DirectorSSaleCommon Stock−7K$31.81−$222.67K18.86K−27.1%SEC
Aug 5, 2025Aug 4, 2025Hagen ErinSVP, CHROSSaleCommon Stock−5.04K$31.18−$157.24K34.69K−12.7%SEC
Jun 12, 2025Jun 11, 2025Lury Richard R.DirectorSSaleCommon Stock−3.1K$30.45−$94.4K19.93K−13.5%SEC
Jun 6, 2025Jun 4, 2025Lury Richard R.DirectorSSaleCommon Stock−6.85K$27.60−$189.03K23.03K−22.9%SEC
Nov 19, 2024Nov 18, 2024Doogue MichaelSVP, CTOPPurchaseCommon Stock+15K$19.00+$285K246.09K+6.5%SEC
Nov 6, 2024Nov 5, 2024Nargolwala Vineet APresident and CEOPPurchaseCommon Stock+5K$19.8892+$99.45K356.11K+1.4%SEC
Aug 9, 2024Aug 7, 2024Sanken Electric Co., Ltd.10% OwnerSSaleCommon Stock−10.02M$23.16−$232M59.73M−14.4%SEC
Jul 31, 2024Jul 29, 2024Sanken Electric Co., Ltd.10% OwnerSSaleCommon Stock−28.75M$23.16−$665.85M69.75M−29.2%SEC
May 31, 2024May 30, 2024Lury Richard R.DirectorSSaleCommon Stock−8.5K$30.00−$255K23K−27.0%SEC
Mar 11, 2024Mar 8, 2024Glover Max R.SVP of Worldwide SalesSSaleCommon Stock−15K$31.77−$476.55K244.63K−5.8%SEC10b5-1
Nov 20, 2023Nov 17, 2023Nargolwala Vineet APresident and CEOPPurchaseCommon Stock+1K$27.84+$27.84K302.16K+0.3%SEC
Nov 15, 2023Nov 14, 2023Lynch Susan DDirectorPPurchaseCommon Stock+350$27.37+$9.58K16.71K+2.1%SEC
Sep 18, 2023Sep 15, 2023D'Antilio DerekSVP, CFO & TreasurerPPurchaseCommon Stock+1.49K$33.63+$50.04K142.9K+1.1%SEC
Aug 24, 2023Aug 23, 2023MARTIN JOSEPH RDirectorSSaleCommon Stock−17K$38.73−$658.41K22.37K−43.2%SEC
Aug 17, 2023Aug 16, 2023Nargolwala Vineet APresident and CEOPPurchaseCommon Stock+5K$38.67+$193.35K301.16K+1.7%SEC
Feb 10, 2023Feb 8, 2023Lury Richard R.DirectorSSaleCommon Stock−6K$42.58−$255.48K27.66K−17.8%SEC
Feb 6, 20235:23 PM ETFeb 2, 2023OEP SKNA, L.P. and 3 others10% OwnerSSaleCommon Stock−4.98M$37.76−$188.04M17.65M−22.0%SEC
Feb 6, 2023Feb 2, 2023Glover Max R.SVP of Worldwide SalesSSaleCommon Stock−40K$40.13−$1.61M194.69K−17.0%SEC
Feb 6, 2023Feb 3, 2023Lynch Susan DDirectorPPurchaseCommon Stock+240$41.53+$9.97K12.52K+2.0%SEC
Jan 19, 2023Jan 17, 2023Glover Max R.SVP of Worldwide SalesSSaleCommon Stock−25K$34.21−$855.25K234.69K−9.6%SEC
Jan 13, 2023Jan 11, 2023Glover Max R.SVP of Worldwide SalesSSaleCommon Stock−15K$32.06−$480.9K259.69K−5.5%SEC
Jan 9, 2023Jan 6, 2023Valente JoanneSVP, CHROSSaleCommon Stock−1.38K$30.00−$41.31K95.78K−1.4%SEC
Jan 6, 2023Jan 4, 2023Valente JoanneSVP, CHROSSaleCommon Stock−1.12K$30.07−$33.77K97.15K−1.1%SEC
Jan 4, 2023Dec 30, 2022 – Jan 3, 2023Valente JoanneSVP, CHROSSaleCommon Stock−7.5K$30.0967−$225.73K98.28K−7.1%SEC
Dec 6, 2022Dec 5, 2022Doogue MichaelSVP, CTOSSaleCommon Stock−75K$33.13−$2.48M76.22K−49.6%SEC
Dec 5, 2022Dec 1, 2022Doogue MichaelSVP, CTOSSaleCommon Stock−7.5K$31.00−$232.5K151.22K−4.7%SEC
Nov 17, 2022Nov 15, 2022Doogue MichaelSVP, CTOSSaleCommon Stock−24.28K$29.25−$710.07K158.72K−13.3%SEC
Nov 15, 2022Nov 11 – Nov 14, 2022Doogue MichaelSVP, CTOSSaleCommon Stock−35.72K$28.7973−$1.03M183K−16.3%SEC
Nov 7, 2022Nov 4, 2022MARTIN JOSEPH RDirectorSSaleCommon Stock−16.35K$25.92−$423.77K35.54K−31.5%SEC
May 25, 2022May 23, 2022MARTIN JOSEPH RDirectorSSaleCommon Stock−8.28K$24.17−$200.08K43.52K−16.0%SEC
Mar 21, 2022Mar 18, 2022Doogue MichaelSVP of Technology and ProductsSSaleCommon Stock−7.5K$29.04−$217.8K218.72K−3.3%SEC
Dec 28, 2021Dec 27, 2021Teebagy Thomas C. Jr.SVP of Operations and QualitySSaleCommon Stock−5K$34.61−$173.05K0−100.0%SEC
Dec 23, 2021Dec 21, 2021Walsh Paul V JrSVP, CFO & TreasurerSSaleCommon Stock−50K$33.42−$1.67M684.85K−6.8%SEC
Dec 8, 2021Dec 7, 2021Walsh Paul V JrSVP, CFO & TreasurerSSaleCommon Stock−75K$33.92−$2.54M754.85K−9.0%SEC
Nov 24, 2021Nov 23, 2021Walsh Paul V JrSVP, CFO & TreasurerSSaleCommon Stock−50K$30.75−$1.54M829.85K−5.7%SEC
Nov 24, 2021Nov 23, 2021MARTIN JOSEPH RDirectorSSaleCommon Stock−13K$30.61−$397.93K51.8K−20.1%SEC