Insider · CIK 0001438029
Brian C White
Files at ALGM (ALLEGRO MICROSYSTEMS, INC.), FORM (FORMFACTOR INC), AMBA (AMBARELLA INC). First filing Dec 21, 2023, latest May 21, 2026.
In brief
Brian C White files SEC Form 4 as director and CFO at FORM (FORMFACTOR INC), and also at AMBA (AMBARELLA INC), ALGM (ALLEGRO MICROSYSTEMS, INC.). Since Dec 21, 2023, Brian C White has reported 0 open-market buys worth $0 and 4 open-market sells worth $1.4M, the latest filed on May 21, 2026.
A track record needs three past buys with six months of prices behind them; Brian C White has 0, so none is measured yet.
The newest scored trade: sold $410k of FORM on May 20, 2026, filed May 21, 2026, scored 56 (moderate). In the last 12 months: 0 buys worth $0 and 3 sells worth $1.1M.
Where the trades landed
Last year at the 2 companies this insider has traded most, with each buy and sell on the bar it happened.
FORM: FORMFACTOR INC
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™
AMBA: AMBARELLA INC
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
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 56Moderate | FORMFACTOR INC | $410k 3,250 shares | -27% | +354% from low-19% from high | |
| 48Moderate | FORMFACTOR INC | $230k 2,300 shares | -18% | +334% from low0% from high | |
| 58Moderate | FORMFACTOR INC | $500k 5,500 shares | -30% | +309% from low0% from high | |
| 49Moderate | AMBARELLA INC | $212k 3,357 shares | -4% | +41% from low-35% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| May 20, 2026 | FORM FORMFACTOR, INC. | 3,250 0.00% of outstanding | $410k | May 20, 2026 | $230k |
| Feb 24, 2026 | FORM FORMFACTOR, INC. | 2,300 0.00% of outstanding | $230k | Feb 24, 2026 | $500k |
| Feb 9, 2026 | FORM FORMFACTOR, INC. | 5,500 0.01% of outstanding | $500k | Feb 9, 2026 | none |
Transactions
Every row this insider has filed, 8 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 5, 2026 | ALGM ALLEGRO MICROSYSTEMS, INC. | AGrant or award Deferred Stock Unitsderivative | +4,251 | $0.00 | $0 | 4,251 | Aug 7, 2026 |
| Jun 17, 2026 | ALGM ALLEGRO MICROSYSTEMS, INC. | AGrant or award Common Stock | +594 | $0.00 | $0 | 594 | Jun 18, 2026 |
| May 20, 2026 | FORM FORMFACTOR INC | SOpen-market sale Common Stock | -3,250 | $126.00 | $410k | 8,653 | May 21, 2026 |
| May 15, 2026 | FORM FORMFACTOR INC | AGrant or award Common Stock | +1,347 | $0.00 | $0 | 11,903 | May 19, 2026 |
| Feb 24, 2026 | FORM FORMFACTOR INC | SOpen-market sale Common Stock | -2,300 | $100.01 | $230k | 10,556 | Feb 25, 2026 |
| Feb 9, 2026 | FORM FORMFACTOR INC | SOpen-market sale Common Stock | -5,500 | $90.95 | $500k | 12,856 | Feb 10, 2026 |
| May 16, 2025 | FORM FORMFACTOR INC | AGrant or award Common Stock | +6,528 | $0.00 | $0 | 18,356 | May 16, 2025 |
| Dec 19, 2023 | AMBA AMBARELLA INC | SOpen-market sale Ordinary Shares | -3,357 | $63.04 | $212k | 74,140 | Dec 21, 2023 |
Questions about Brian C White
Answered from the filings on this page, as of the latest one.
Is Brian C White buying or selling?
In the last 12 months Brian C White reported 0 open-market buys worth $0 and 3 open-market sells worth $1.1M on SEC Form 4; the latest was sold $410k of FORM on May 20, 2026. Grants, option exercises and tax withholding are not counted.
How did Brian C White's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Brian C White has 0.
Where does Brian C White file Form 4?
Brian C White has filed Form 4 at FORM (FORMFACTOR INC); AMBA (AMBARELLA INC) as CFO; ALGM (ALLEGRO MICROSYSTEMS, INC.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
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.