As of the latest Form 4 filed Jun 18, 2026.
What Allegro Microsystems Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 40 most recent filings for ALGM.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-06-18 | 2026-06-17 | WHITE BRIAN C Director | AAward | +594.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-04 | 2026-06-03 | Madormo Richard SVP, Worldwide Sales | SSale | −5.00K | $52.72 | $264K | No | Form 4 ↗ |
| 2026-05-26 | 2026-05-22 | Coleman Troy SVP, General Manager, Products | SSale | −4.50K | $45.72 | $206K | No | Form 4 ↗ |
| 2026-05-22 | 2026-05-21 | Webster Roald Graham VP, Chief Accounting Officer | SSale | −5.22K | $44.89 | $234K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-18 | Kent Ian SVP, Global Operations | SSale | −2.64K | $41.56 | $110K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-16 | Kent Ian, SVP, Global Operations | FTax | −2.35K | $43.10 | $101K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-16 | Hagen Erin SVP, CHRO | FTax | −5.82K | $43.10 | $251K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-16 | D'Antilio Derek EVP, CFO & Treasurer | FTax | −37.8K | $43.10 | $1.63M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-16 | Madormo Richard SVP, Worldwide Sales | FTax | −5.44K | $43.10 | $234K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-16 | Webster Roald Graham VP, Chief Accounting Officer | FTax | −4.28K | $43.10 | $184K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-16 | Doogue Michael President and CEO | FTax | −60.5K | $43.10 | $2.61M | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-16 | Briansky Sharon SVP, GC and Secretary | FTax | −13.9K | $43.10 | $601K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-16 | Coleman Troy SVP, General Manager, Products | FTax | −9.67K | $43.10 | $417K | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-14 | Lynch Susan D Director | SSale | −16.7K | $45.46 | $760K | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | Willett Robert Director | AAward | +1.09K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | Kent Ian SVP, Global Operations | AAward | +8.49K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | D'Antilio Derek EVP, CFO & Treasurer | AAward | +30.4K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | D'Antilio Derek, EVP, CFO & Treasurer | AAward | +29.4K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | Madormo Richard SVP, Worldwide Sales | AAward | +19.8K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | Briansky Sharon SVP, GC and Secretary | AAward | +2.61K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | Briansky Sharon, SVP, GC and Secretary | AAward | +15.9K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | Coleman Troy SVP, General Manager, Products | AAward | +18.1K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | Doogue Michael President and CEO | AAward | +83.7K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | Doogue Michael, President and CEO | AAward | +77.1K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | Hagen Erin SVP, CHRO | AAward | +9.06K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | Webster Roald Graham VP, Chief Accounting Officer | AAward | +544.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-13 | Webster Roald Graham, VP, Chief Accounting Officer | AAward | +4.76K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Briansky Sharon SVP, GC and Secretary | SSale | −8.95K | $47.54 | $425K | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-11 | Doogue Michael President and CEO | SSale | −30.1K | $47.23 | $1.42M | No | Form 4 ↗ |
| 2026-03-25 | 2026-03-24 | Madormo Richard SVP, Worldwide Sales | DDisposition | −6.50K | $32.58 | $212K | No | Form 4 ↗ |
| 2026-03-04 | 2026-02-02 | Kent Ian SVP, Global Operations | AAward | +9.18K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-03 | 2026-03-02 | Briansky Sharon SVP, GC and Secretary | SSale | −9.73K | $35.00 | $340K | No | Form 4 ↗ |
| 2026-03-03 | 2026-03-02 | Hagen Erin SVP, CHRO | SSale | −2.60K | $35.00 | $90.9K | No | Form 4 ↗ |
| 2026-03-03 | 2026-02-27 | Briansky Sharon SVP, GC and Secretary | FTax | −9.11K | $36.47 | $332K | No | Form 4 ↗ |
| 2026-03-03 | 2026-02-27 | D'Antilio Derek EVP, CFO & Treasurer | FTax | −9.99K | $36.47 | $365K | No | Form 4 ↗ |
| 2026-03-03 | 2026-02-27 | Hagen Erin SVP, CHRO | FTax | −2.00K | $36.47 | $72.8K | No | Form 4 ↗ |
| 2026-02-18 | 2026-02-17 | Briansky Sharon SVP, GC and Secretary | SSale | −9.26K | $41.56 | $385K | No | Form 4 ↗ |
| 2026-02-18 | 2026-02-13 | Briansky Sharon, SVP, GC and Secretary | FTax | −8.99K | $42.38 | $381K | No | Form 4 ↗ |
| 2026-02-18 | 2026-02-13 | D'Antilio Derek EVP, CFO & Treasurer | FTax | −17.8K | $42.38 | $755K | No | Form 4 ↗ |
| 2025-12-12 | 2025-12-10 | Briansky Sharon SVP, GC and Secretary | SSale | −27.9K | $30.00 | $836K | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also ALGM’s full analysis or the market-wide insider trading feed. The tabs above jump to ALGM’s other SEC data.
Source: SEC Form 4 filings for ALGM, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.