Insider txns (12m)
10
Stock / equity
ALGM ALLEGRO MICROSYSTEMS, INC.
- Company
- ALLEGRO MICROSYSTEMS, INC.
- Security
- Equity
- Size, estimated from filings
- Mid cap ($2B – $10B)
- Insiders on record
- 8
- Members of Congress
- 1
- Latest trade on record
- September 30, 2026
ALGM (ALLEGRO MICROSYSTEMS, INC.) has 10 disclosed insider transactions from 8 insiders in the last 12 months (0 open-market buys, 2 sales, about $147K at reported prices) and 1 congressional trade from 1 member of Congress. The most recent disclosure was filed October 12, 2026.
Open-market buys / sales
0 / 2
Congress trades (12m)
1
Distinct filers (12m)
9
Share price
Price and chart by TradingView for ALLEGRO MICROSYSTEMS, INC.. US share prices here are delayed, not real-time. The trade records on this page come from government filings, not from this chart.
ALGM in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
BoughtSold
3 people account for the disclosed buying and selling in ALGM over the last 12 months; the most active is Hagen Erin with $101K.
Insiders trading ALGM
Everyone who filed a Form 4 for this ticker, by number of rows on record. "Bought" and "sold" count open-market purchases (code P) and sales only; awards, option exercises and shares withheld for tax are in the row count but not in those two columns.
| Insider | Role | Rows | Bought | Sold | Value bought | Value sold | Latest |
|---|---|---|---|---|---|---|---|
| Willett Robert | Director | 2 | 0 | 0 | — | — | September 30, 2026 |
| Raubacher Jennie | Director | 2 | 0 | 1 | — | $45K | August 17, 2026 |
| Hagen Erin | SVP, CHRO | 1 | 0 | 1 | — | $101K | August 10, 2026 |
| MARTIN JOSEPH R | Director | 1 | 0 | 0 | — | — | August 5, 2026 |
| Palepu Krishna G. | Director | 1 | 0 | 0 | — | — | August 5, 2026 |
| PUMA MARY G | Director | 1 | 0 | 0 | — | — | August 5, 2026 |
| Suzuki Yoshihiro | Director | 1 | 0 | 0 | — | — | August 5, 2026 |
| WHITE BRIAN C | Director | 1 | 0 | 0 | — | — | August 5, 2026 |
What kind of transactions these are 2 Form 4 codes
| Code | Meaning | Rows | Shares | Value at reported prices |
|---|---|---|---|---|
| A | Grant or award | 8 | 30,376 | — |
| S | Open-market sale | 2 | 3,285 | $147K |
What each code means: Form 4 transaction codes.
Members of Congress trading ALGM
Members whose periodic transaction reports name this ticker. Amounts are the sums of the ranges as filed.
| Member | Seat | Trades | Bought | Sold | Range as filed | Latest |
|---|---|---|---|---|---|---|
| Gilbert Ray Cisneros, Jr. | Representative (CA, District 31), Democrat | 1 | 1 | 0 | $1,001–$15K | September 29, 2026 |
Insider transactions
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| Willett Robert | Other A | September 30, 2026 | October 1, 2026 | 1d | 619 | — | — | derivative | Form 4 ↗ | |
| Raubacher Jennie | Sell S | August 17, 2026 | August 18, 2026 | 1d | 1,000 | $45 | $45K | Form 4 ↗ | ||
| Hagen Erin | Sell S | August 10, 2026 | August 12, 2026 | 2d | 2,285 | $44 | $101K | Form 4 ↗ | ||
| WHITE BRIAN C | Other A | August 5, 2026 | August 7, 2026 | 2d | 4,251 | — | — | derivative | Form 4 ↗ | |
| Willett Robert | Other A | August 5, 2026 | August 7, 2026 | 2d | 4,251 | — | — | derivative | Form 4 ↗ | |
| Raubacher Jennie | Other A | August 5, 2026 | August 7, 2026 | 2d | 4,251 | — | — | derivative | Form 4 ↗ | |
| Palepu Krishna G. | Other A | August 5, 2026 | August 7, 2026 | 2d | 4,251 | — | — | Form 4 ↗ | ||
| PUMA MARY G | Other A | August 5, 2026 | August 7, 2026 | 2d | 4,251 | — | — | Form 4 ↗ | ||
| MARTIN JOSEPH R | Other A | August 5, 2026 | August 7, 2026 | 2d | 4,251 | — | — | Form 4 ↗ | ||
| Suzuki Yoshihiro | Other A | August 5, 2026 | August 7, 2026 | 2d | 4,251 | — | — | Form 4 ↗ |
Congressional trades
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| Gilbert Ray Cisneros, Jr. | Buy | September 29, 2026 | October 12, 2026 | 13d | — | — | $1,001–$15K | House PTR ↗ |
Related stocks
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Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- How to read a congressional trade report Owner tells you whose asset it was: the member, the spouse, a dependent child, or held jointly.
- Why congressional trade amounts are ranges There are ten ranges; the lowest is $1,001–$15,000 and the highest is over $50,000,000.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| House Clerk, periodic transaction reports | 1 | 1 | October 12, 2026 | October 12, 2026 | House Clerk search |
| SEC EDGAR, Form 4 | 10 | 10 | August 7, 2026 | October 1, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Insider rows are Form 4 filings for this issuer from SEC EDGAR; congressional rows are periodic transaction reports parsed from the House Clerk and the Senate eFD. Values use the reported price for Form 4 and the disclosed range for Congress. See methodology and corrections.
Not investment advice. Disclosures are shown as filed and may lag the trade or be amended. No recommendation is made or implied.