Allegro Microsystems Inc (ALGM): Congress and insider trades
Who in Congress and inside the company traded ALGM, when each filing appeared, and what buying after each one would have earned against the S&P 500.
Key Facts
- Allegro Microsystems Inc (ALGM) is a listed stock on NASDAQ.
- 3 members of Congress filed 4 buys and 2 sells of ALGM, the latest published 2023-11-13 (13 November 2023).
- Insiders filed 0 open market buys worth $0 and 4 sells worth $805K, the latest filed 2026-08-12 (12 August 2026).
- Across 3 scored buys, Congress averaged -5.5% against the S&P 500 (SPY) over the 90 days after disclosure, with 33% of them ahead of the index. That result is too few trades to draw a conclusion.
- Data as of 2026-09-29 (29 September 2026).
Congress trades in ALGM
as of 2023-11-13| Filed | Member | Type | Size | Days to file | 90 day vs S&P |
|---|---|---|---|---|---|
| 13 Nov 2023 | Josh Gottheimer (D-NJ) | buy | 1K–15K | 15 | +2.5% |
| 1 May 2023 | Tom Carper (D-DE) | sell | 1K–15K | 14 | n/a |
| 20 Feb 2023 | Josh Gottheimer (D-NJ) | buy | 1K–15K | 25 | -13.6% |
| 15 Jun 2021 | Susie Lee (D-NV) | sell | 1K–15K | 19 | n/a |
| 12 Mar 2021 | Susie Lee (D-NV) | buy | 1K–15K | 27 | -5.2% |
| 12 Mar 2021 | Susie Lee (D-NV) | buy | 1K–15K | 34 | -5.2% |
Nothing matches that search.
Insider trades in ALGM
as of 2026-08-12| Filed | Insider | Type | Shares | Price | Value | 90 day vs S&P |
|---|---|---|---|---|---|---|
| 12 Aug 2026 | Hagen Erin | sell | 2,285 | $44.39 | $101K | n/a |
| 4 Jun 2026 | Madormo Richard | sell | 5,000 | $52.72 | $264K | n/a |
| 26 May 2026 | Coleman Troy | sell | 4,500 | $45.72 | $206K | n/a |
| 22 May 2026 | Webster Roald Graham | sell | 5,217 | $44.88 | $234K | n/a |
Nothing matches that search.
Related pages
Frequently asked questions
Who has bought ALGM?
4 Congress buys by 3 members and 0 insider buys are on file. The tables on this page list every one.
Did buying ALGM after a disclosure beat the market?
Across 3 scored buys, Congress averaged -5.5% against the S&P 500 (SPY) over the 90 days after disclosure, with 33% of them ahead of the index. That result is too few trades to draw a conclusion. A single stock is a small sample.
Sources: Congressional trades: STOCK Act disclosures, collected from CapitolTrades. Insider trades: SEC Form 4 filings, collected from Finviz. Prices: Yahoo Finance daily adjusted closes. Data as of 2026-09-29 (29 September 2026). About these sources.
Not investment advice. Past disclosed trades do not predict future returns. Disclosures are published late, so the trades shown are ones you could only have copied after the fact. Talk to a licensed adviser before you invest.