Allegro Microsystems, Inc.
ALGM- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0000866291
In the last 90 days, Allegro Microsystems, Inc. insiders filed 0 open-market purchases and 1 sale; 376 institutions reported holding it in 13F filings for Q2 2026, worth $10.2B in total; Maverick Capital is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Allegro Microsystems, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 1 filing
- 1 insider, $45.3K in total
- Insiders trading
- 1
- Net value
- −$45.3K
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Allegro Microsystems, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Willett Robert | Director | 1,094 | Oct 1, 2026 | 3 |
| Raubacher Jennie | Director | 13,976 | Aug 18, 2026 | 2 |
| Hagen Erin | SVP, CHRO | 31,052 | Aug 12, 2026 | 4 |
| Suzuki Yoshihiro | Director | 217,811 | Aug 7, 2026 | 1 |
| Martin Joseph R | Director | 39,430 | Aug 7, 2026 | 1 |
| Puma Mary G | Director | 21,734 | Aug 7, 2026 | 1 |
| Palepu Krishna G. | Director | 14,212 | Aug 7, 2026 | 1 |
| White Brian C | Director | 594 | Aug 7, 2026 | 2 |
| Madormo Richard | SVP, Worldwide Sales | 69,687 | Jun 4, 2026 | 4 |
| Coleman Troy | SVP, General Manager, Products | 77,476 | May 26, 2026 | 3 |
| Webster Roald Graham | VP, Chief Accounting Officer | 13,106 | May 22, 2026 | 3 |
| Doogue Michael | President and CEO | 279,076 | May 19, 2026 | 3 |
| Briansky Sharon | SVP, GC and Secretary | 79,753 | May 19, 2026 | 6 |
| D'Antilio Derek | EVP, CFO & Treasurer | 238,813 | May 19, 2026 | 4 |
| Kent Ian | SVP, Global Operations | 25,392 | May 19, 2026 | 3 |
| Lynch Susan D | Director | 12,805 | May 15, 2026 | 1 |
| Lury Richard R. | Director | 18,857 | Aug 13, 2025 | 0 |
| Glover Max R. | SVP of Worldwide Sales | 266,339 | Nov 19, 2024 | 0 |
| Nargolwala Vineet A | President and CEO | 356,113 | Nov 6, 2024 | 0 |
| Narayan Suman | SVP, Products | 123,084 | Sep 3, 2024 | 0 |
| Aldrich David J | Director | 26,746 | Aug 9, 2024 | 0 |
| Schorr Paul IV | Director | 10,199 | Aug 9, 2024 | 0 |
| Sanken Electric Co., Ltd. | 10% Owner | 59,732,782 | Aug 9, 2024 | 0 |
| Valente Joanne | SVP, CHRO | 126,718 | Nov 21, 2023 | 0 |
| Kazerounian Reza | Director | 219,808 | Aug 4, 2023 | 0 |
| Oep Skna, L.P. | 10% Owner | 17,649,247Indirect | Feb 6, 2023 | 0 |
| OEP VI GP, Ltd. | 10% Owner | 17,649,247Indirect | Feb 6, 2023 | 0 |
| Oep Skna GP, LLC | 10% Owner | 17,649,247Indirect | Feb 6, 2023 | 0 |
| OEP VI General Partner, L.P. | 10% Owner | 17,649,247Indirect | Feb 6, 2023 | 0 |
| Teebagy Thomas C. Jr. | SVP of Operations and Quality | 73,336 | Dec 8, 2022 | 0 |
| Vig Ravi | President and CEO | 2,392,613 | Jun 15, 2022 | 0 |
| Walsh Paul V Jr | SVP, CFO & Treasurer | 684,851Indirect | Dec 23, 2021 | 0 |
| Brown Christopher | SVP and General Counsel | 144,988 | Nov 23, 2021 | 0 |
| Fujita Noriharu | Director | 10,036 | Sep 30, 2021 | 0 |
| King Christine | Director | 12,380 | Aug 6, 2021 | 0 |
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.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 18, 2026 (view filing)4:15 PM ET | Aug 17 | 1 day | Raubacher JennieDirector | SSale | −1.00K | $45.32 | −$45.3K | −6.7%14.0K after | |
| Aug 12, 2026 (view filing)4:16 PM ET | Aug 10 | 2 days | Hagen ErinSVP, CHRO | SSale | −2.29K | $44.39 | −$101.4K | −6.9%31.1K after | |
| Jun 4, 2026 (view filing) | Jun 3 | 1 day | Madormo RichardSVP, Worldwide Sales | SSale | −5.00K | $52.72 | −$263.6K | −6.7%69.7K after | |
| May 26, 2026 (view filing) | May 22 | 4 days | Coleman TroySVP, General Manager, Products | SSale | −4.50K | $45.72 | −$205.7K | −5.5%77.5K after | |
| May 22, 2026 (view filing) | May 21 | 1 day | Webster Roald GrahamVP, Chief Accounting Officer | SSale | −5.22K | $44.89 | −$234.2K | −28.5%13.1K after | |
| May 19, 2026 (view filing) | May 18 | 1 day | Kent IanSVP, Global Operations | SSale | −2.64K | $41.56 | −$109.8K | −9.4%25.4K after | |
| May 15, 2026 (view filing) | May 14 | 1 day | Lynch Susan DDirector | SSale | −16.7K | $45.46 | −$759.7K | −56.6%12.8K after | |
| May 13, 2026 (view filing) | May 11 | 2 days | Briansky SharonSVP, GC and Secretary | SSale | −8.95K | $47.54 | −$425.4K | −10.6%75.2K after | |
| May 13, 2026 (view filing) | May 11 | 2 days | Doogue MichaelPresident and CEO | SSale | −30.1K | $47.23 | −$1.42M | −10.6%252.8K after | |
| Mar 3, 2026 (view filing) | Mar 2 | 1 day | Briansky SharonSVP, GC and Secretary | SSale | −9.73K | $35.00 | −$340.4K | −10.4%84.2K after | |
| Mar 3, 2026 (view filing) | Mar 2 | 1 day | Hagen ErinSVP, CHRO | SSale | −2.60K | $35.00 | −$90.9K | −7.9%30.1K after | |
| Feb 18, 2026 (view filing) | Feb 17 | 1 day | Briansky SharonSVP, GC and Secretary | SSale | −9.26K | $41.56 | −$384.8K | −8.2%103.0K after | |
| Dec 12, 2025 (view filing) | Dec 10 | 2 days | Briansky SharonSVP, GC and Secretary | SSale | −27.9K | $30.00 | −$836.2K | −18.7%121.3K after | |
| Aug 25, 2025 (view filing) | Aug 22 | 3 days | Webster Roald GrahamVP, Chief Accounting Officer | SSale | −8.27K | $32.81 | −$271.2K | −32.3%17.3K after | |
| Aug 13, 2025 (view filing) | Aug 12 | 1 day | Lury Richard R.Director | SSale | −7.00K | $31.81 | −$222.7K | −27.1%18.9K after | |
| Aug 5, 2025 (view filing) | Aug 4 | 1 day | Hagen ErinSVP, CHRO | SSale | −5.04K | $31.18 | −$157.2K | −12.7%34.7K after | |
| Jun 12, 2025 (view filing) | Jun 11 | 1 day | Lury Richard R.Director | SSale | −3.10K | $30.45 | −$94.4K | −13.5%19.9K after | |
| Jun 6, 2025 (view filing) | Jun 4 | 2 days | Lury Richard R.Director | SSale | −6.85K | $27.60 | −$189.0K | −22.9%23.0K after | |
| Nov 19, 2024 (view filing) | Nov 18 | 1 day | Doogue MichaelSVP, CTO | PPurchase | +15.0K | $19.00 | +$285.0K | +6.5%246.1K after | |
| Nov 6, 2024 (view filing) | Nov 5 | 1 day | Nargolwala Vineet APresident and CEO | PPurchase | +5.00K | $19.89 | +$99.4K | +1.4%356.1K after | 2 lots |
| Aug 9, 2024 (view filing) | Aug 7 | 2 days | Sanken Electric Co., Ltd.10% Owner | SSale | −10.0M | $23.16 | −$232.0M | −14.4%59.7M after | |
| Jul 31, 2024 (view filing) | Jul 29 | 2 days | Sanken Electric Co., Ltd.10% Owner | SSale | −28.8M | $23.16 | −$665.9M | −29.2%69.8M after | |
| May 31, 2024 (view filing) | May 30 | 1 day | Lury Richard R.Director | SSale | −8.50K | $30.00 | −$255.0K | −27.0%23.0K after | |
| Mar 11, 2024 (view filing) | Mar 8 | 3 days | Glover Max R.SVP of Worldwide Sales | SSale | −15.0K | $31.77 | −$476.6K | −5.8%244.6K after | 10b5-1 |
| Nov 20, 2023 (view filing) | Nov 17 | 3 days | Nargolwala Vineet APresident and CEO | PPurchase | +1.00K | $27.84 | +$27.8K | +0.3%302.2K after | |
| Nov 15, 2023 (view filing) | Nov 14 | 1 day | Lynch Susan DDirector | PPurchase | +350 | $27.37 | +$9.58K | +2.1%16.7K after | |
| Sep 18, 2023 (view filing) | Sep 15 | 3 days | D'Antilio DerekSVP, CFO & Treasurer | PPurchase | +1.49K | $33.63 | +$50.0K | +1.1%142.9K after | |
| Aug 24, 2023 (view filing) | Aug 23 | 1 day | Martin Joseph RDirector | SSale | −17.0K | $38.73 | −$658.4K | −43.2%22.4K after | |
| Aug 17, 2023 (view filing) | Aug 16 | 1 day | Nargolwala Vineet APresident and CEO | PPurchase | +5.00K | $38.67 | +$193.3K | +1.7%301.2K after | |
| Feb 10, 2023 (view filing) | Feb 8 | 2 days | Lury Richard R.Director | SSale | −6.00K | $42.58 | −$255.5K | −17.8%27.7K after | |
| Feb 6, 2023 (view filing)5:23 PM ET | Feb 2 | 4 days | Oep Skna, L.P. and 3 others10% Owner | SSale | −4.98M | $37.76 | −$188.0M | −22.0%17.6M after | |
| Feb 6, 2023 (view filing) | Feb 2 | 4 days | Glover Max R.SVP of Worldwide Sales | SSale | −40.0K | $40.13 | −$1.61M | −17.0%194.7K after | |
| Feb 6, 2023 (view filing) | Feb 3 | 3 days | Lynch Susan DDirector | PPurchase | +240 | $41.53 | +$9.97K | +2.0%12.5K after | |
| Jan 19, 2023 (view filing) | Jan 17 | 2 days | Glover Max R.SVP of Worldwide Sales | SSale | −25.0K | $34.21 | −$855.3K | −9.6%234.7K after | |
| Jan 13, 2023 (view filing) | Jan 11 | 2 days | Glover Max R.SVP of Worldwide Sales | SSale | −15.0K | $32.06 | −$480.9K | −5.5%259.7K after | |
| Jan 9, 2023 (view filing) | Jan 6 | 3 days | Valente JoanneSVP, CHRO | SSale | −1.38K | $30.00 | −$41.3K | −1.4%95.8K after | |
| Jan 6, 2023 (view filing) | Jan 4 | 2 days | Valente JoanneSVP, CHRO | SSale | −1.12K | $30.07 | −$33.8K | −1.1%97.2K after | |
| Jan 4, 2023 (view filing) | Dec 30, 2022-Jan 3, 2023 | 5 days | Valente JoanneSVP, CHRO | SSale | −7.50K | $30.10 | −$225.7K | −7.1%98.3K after | 2 lots |
| Dec 6, 2022 (view filing) | Dec 5 | 1 day | Doogue MichaelSVP, CTO | SSale | −75.0K | $33.13 | −$2.48M | −49.6%76.2K after | |
| Dec 5, 2022 (view filing) | Dec 1 | 4 days | Doogue MichaelSVP, CTO | SSale | −7.50K | $31.00 | −$232.5K | −4.7%151.2K after | |
| Nov 17, 2022 (view filing) | Nov 15 | 2 days | Doogue MichaelSVP, CTO | SSale | −24.3K | $29.25 | −$710.1K | −13.3%158.7K after | |
| Nov 15, 2022 (view filing) | Nov 11-14 | 4 days | Doogue MichaelSVP, CTO | SSale | −35.7K | $28.80 | −$1.03M | −16.3%183.0K after | 2 lots |
| Nov 7, 2022 (view filing) | Nov 4 | 3 days | Martin Joseph RDirector | SSale | −16.3K | $25.92 | −$423.8K | −31.5%35.5K after | |
| May 25, 2022 (view filing) | May 23 | 2 days | Martin Joseph RDirector | SSale | −8.28K | $24.17 | −$200.1K | −16.0%43.5K after | |
| Mar 21, 2022 (view filing) | Mar 18 | 3 days | Doogue MichaelSVP of Technology and Products | SSale | −7.50K | $29.04 | −$217.8K | −3.3%218.7K after | |
| Dec 28, 2021 (view filing) | Dec 27 | 1 day | Teebagy Thomas C. Jr.SVP of Operations and Quality | SSale | −5.00K | $34.61 | −$173.1K | −100.0%0 after | |
| Dec 23, 2021 (view filing) | Dec 21 | 2 days | Walsh Paul V JrSVP, CFO & Treasurer | SSale | −50.0K | $33.42 | −$1.67M | −6.8%684.9K after | |
| Dec 8, 2021 (view filing) | Dec 7 | 1 day | Walsh Paul V JrSVP, CFO & Treasurer | SSale | −75.0K | $33.92 | −$2.54M | −9.0%754.9K after | |
| Nov 24, 2021 (view filing) | Nov 23 | 1 day | Walsh Paul V JrSVP, CFO & Treasurer | SSale | −50.0K | $30.75 | −$1.54M | −5.7%829.9K after | |
| Nov 24, 2021 (view filing) | Nov 23 | 1 day | Martin Joseph RDirector | SSale | −13.0K | $30.61 | −$397.9K | −20.1%51.8K after |