Nasdaq · CIK 0000866291
ALGM ALLEGRO MICROSYSTEMS, INC.
Insider trading from SEC Form 4. Last filing 11 d ago. Close $35.57 on Oct 9, 2026, +56% from the 52-week low and -49% from the high.
Last 90 days
Net insider value
$0
no open-market trades
Buys
0
$0 by 0 insiders
Sells
0
$0 by 0 insiders
Insiders on file
17
with a Form 4 at this company
Price and insider trades, last year
ALGMOct 9, 2026 · close 35.57
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at ALLEGRO MICROSYSTEMS, INC., scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 23Weak | Sharon Briansky SVP, GC and Secretary sell | $836k 27,873 shares | -19% | +77% from low-22% from high | |
| 46Moderate | Roald Graham Webster VP, Chief Accounting Officer sell | $271k 8,266 shares | -32% | +94% from low-14% from high | |
| 52Moderate | Richard R. Lury director sell | $223k 7,000 shares | -27% | +93% from low-15% from high | |
| 39Weak | Erin Hagen SVP, CHRO sell | $157k 5,043 shares | -13% | +90% from low-16% from high | |
| 30Weak | Richard R. Lury director sell | $94k 3,100 shares | -13% | +82% from low-2% from high | |
| 32Weak | Richard R. Lury director sell | $189k 6,849 shares | -23% | +69% from low-1% from high | |
| 40Moderate | Michael Doogue SVP, CTO buy | $285k 15,000 shares | +6% | - | |
| 43Moderate | Vineet A Nargolwala President and CEO buy | $99k 5,000 shares | +1% | - |
Transactions
The last 40 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 30, 2026 | Robert Willett director | AGrant or award Deferred Stock Unitsderivative | +619 | $0.00 | $0 | 4,870 | 11 d ago |
| Dec 10, 2025 | Sharon Briansky SVP, GC and Secretary | SOpen-market sale Common Stock10b5-1 | -27,873 | $30.00 | $836k | 121,263 | Dec 12, 2025 |
| Nov 11, 2025 | Troy Coleman SVP, General Manager, Products | AGrant or award Common Stock | +73,530 | $0.00 | $0 | 73,530 | Nov 12, 2025 |
| Aug 22, 2025 | Roald Graham Webster VP, Chief Accounting Officer | SOpen-market sale Common Stock | -8,266 | $32.81 | $271k | 17,300 | Aug 25, 2025 |
| Aug 12, 2025 | Richard R. Lury director | SOpen-market sale Common Stock | -7,000 | $31.81 | $223k | 18,857 | Aug 13, 2025 |
| Aug 7, 2025 | Jennie Raubacher director | AGrant or award Common Stock | +5,932 | $0.00 | $0 | 14,976 | Aug 8, 2025 |
| Aug 7, 2025 | Richard R. Lury director | AGrant or award Common Stock | +5,932 | $0.00 | $0 | 25,857 | Aug 8, 2025 |
| Aug 7, 2025 | Susan D Lynch director | AGrant or award Common Stock | +5,932 | $0.00 | $0 | 29,516 | Aug 8, 2025 |
| Aug 7, 2025 | Krishna G. Palepu director | AGrant or award Common Stock | +5,932 | $0.00 | $0 | 9,961 | Aug 8, 2025 |
| Aug 7, 2025 | Joseph R Martin director | AGrant or award Common Stock | +5,932 | $0.00 | $0 | 35,179 | Aug 8, 2025 |
| Aug 7, 2025 | Mary G Puma director | AGrant or award Common Stock | +5,932 | $0.00 | $0 | 17,483 | Aug 8, 2025 |
| Aug 7, 2025 | Yoshihiro Suzuki director | AGrant or award Common Stock | +5,932 | $0.00 | $0 | 213,560 | Aug 8, 2025 |
| Aug 4, 2025 | Erin Hagen SVP, CHRO | SOpen-market sale Common Stock | -5,043 | $31.18 | $157k | 34,688 | Aug 5, 2025 |
| Jun 11, 2025 | Richard R. Lury director | SOpen-market sale Common Stock | -3,100 | $30.45 | $94k | 19,925 | Jun 12, 2025 |
| Jun 4, 2025 | Richard R. Lury director | SOpen-market sale Common Stock | -6,849 | $27.60 | $189k | 23,025 | Jun 6, 2025 |
| May 15, 2025 | Michael Doogue President and CEO | AGrant or award Common Stock | +150,226 | $0.00 | $0 | 237,279 | May 19, 2025 |
| May 15, 2025 | Roald Graham Webster VP, Chief Accounting Officer | AGrant or award Common Stock | +9,765 | $0.00 | $0 | 30,514 | May 19, 2025 |
| May 15, 2025 | Richard Madormo SVP, Worldwide Sales | AGrant or award Common Stock | +37,557 | $0.00 | $0 | 66,809 | May 19, 2025 |
| May 15, 2025 | Erin Hagen SVP, CHRO | AGrant or award Common Stock | +18,153 | $0.00 | $0 | 44,630 | May 19, 2025 |
| May 15, 2025 | Sharon Briansky SVP, GC and Secretary | AGrant or award Common Stock | +35,053 | $0.00 | $0 | 167,848 | May 19, 2025 |
| May 15, 2025 | Derek D'Antilio EVP, CFO & Treasurer | AGrant or award Common Stock | +65,098 | $0.00 | $0 | 274,490 | May 19, 2025 |
| May 16, 2025 | Roald Graham Webster VP, Chief Accounting Officer | FTax withholding Common Stock | -4,948 | $27.51 | $136k | 25,566 | May 19, 2025 |
| May 16, 2025 | Erin Hagen SVP, CHRO | FTax withholding Common Stock | -4,899 | $27.51 | $135k | 39,731 | May 19, 2025 |
| May 16, 2025 | Sharon Briansky SVP, GC and Secretary | FTax withholding Common Stock | -18,712 | $27.51 | $515k | 149,136 | May 19, 2025 |
| May 16, 2025 | Derek D'Antilio EVP, CFO & Treasurer | FTax withholding Common Stock | -29,911 | $27.51 | $823k | 244,579 | May 19, 2025 |
| May 16, 2025 | Michael Doogue President and CEO | FTax withholding Common Stock | -21,730 | $27.51 | $598k | 215,549 | May 19, 2025 |
| May 13, 2025 | Michael Doogue President and CEO | AGrant or award Common Stock | +18,489 | $0.00 | $0 | 87,053 | May 14, 2025 |
| May 13, 2025 | Derek D'Antilio EVP, CFO & Treasurer | AGrant or award Common Stock | +21,295 | $0.00 | $0 | 209,392 | May 14, 2025 |
| May 13, 2025 | Roald Graham Webster VP, Chief Accounting Officer | AGrant or award Common Stock | +1,002 | $0.00 | $0 | 20,749 | May 14, 2025 |
| May 13, 2025 | Erin Hagen SVP, CHRO | AGrant or award Common Stock | +1,222 | $0.00 | $0 | 26,477 | May 14, 2025 |
| May 13, 2025 | Sharon Briansky SVP, GC and Secretary | AGrant or award Common Stock | +14,656 | $0.00 | $0 | 132,795 | May 14, 2025 |
| Feb 27, 2025 | Sharon Briansky SVP, GC and Secretary | AGrant or award Common Stock | +18,834 | $0.00 | $0 | 118,139 | Mar 3, 2025 |
| Feb 27, 2025 | Erin Hagen SVP, CHRO | AGrant or award Common Stock | +4,594 | $0.00 | $0 | 25,255 | Mar 3, 2025 |
| Feb 27, 2025 | Derek D'Antilio EVP, CFO & Treasurer | AGrant or award Common Stock | +20,671 | $0.00 | $0 | 188,097 | Mar 3, 2025 |
| Jan 31, 2025 | Krishna G. Palepu director | AGrant or award Common Stock | +4,029 | $0.00 | $0 | 4,029 | Feb 3, 2025 |
| Nov 18, 2024 | Max R. Glover SVP of Worldwide Sales | FTax withholding Common Stock | -2,644 | $19.24 | $51k | 266,339 | Nov 19, 2024 |
| Nov 18, 2024 | Michael Doogue SVP, CTO | FTax withholding Common Stock | -2,319 | $19.24 | $45k | 62,404 | Nov 19, 2024 |
| Nov 18, 2024 | Michael Doogue SVP, CTO | POpen-market purchase Common Stockindirect: By the Michael C. Doogue Revocable Trust of 2015 | +15,000 | $19.00 | $285k | 246,086 | Nov 19, 2024 |
| Nov 5, 2024 | Vineet A Nargolwala President and CEO | POpen-market purchase Common Stock | +4,800 | $19.89 | $95k | 355,913 | Nov 6, 2024 |
| Nov 5, 2024 | Vineet A Nargolwala President and CEO | POpen-market purchase Common Stock | +200 | $19.87 | $3,974 | 356,113 | Nov 6, 2024 |
Insiders
Everyone who has filed a Form 4 here.
- Sharon BrianskySVP, GC and Secretary
- Troy ColemanSVP, General Manager, Products
- Derek D'AntilioEVP, CFO & Treasurer
- Michael DooguePresident and CEO
- Max R. GloverSVP of Worldwide Sales
- Erin HagenSVP, CHRO
- Richard R. Lurydirector
- Susan D Lynchdirector
- Joseph R Martindirector
- Richard MadormoSVP, Worldwide Sales
- Vineet A NargolwalaPresident and CEO
- Mary G Pumadirector
- Krishna G. Palepudirector
- Jennie Raubacherdirector
- Yoshihiro Suzukidirector
- Roald Graham WebsterVP, Chief Accounting Officer
- Robert Willettceo, president, officer, director
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.