Insider · CIK 0001942459
Jonathan Bornstein
presidentofficer
Files at AMPX (Amprius Technologies, Inc.). First filing Oct 12, 2023, latest Feb 24, 2025.
In brief
Jonathan Bornstein files SEC Form 4 as president at AMPX (Amprius Technologies, Inc.). Since Oct 12, 2023, Jonathan Bornstein has reported 0 open-market buys worth $0 and 9 open-market sells worth $3.8M, the latest filed on Feb 24, 2025.
A track record needs three past buys with six months of prices behind them; Jonathan Bornstein has 0, so none is measured yet.
The newest scored trade: sold $42k of AMPX on Feb 21, 2025, filed Feb 24, 2025, scored 41 (moderate).
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 9
$0 bought, $3.8M sold
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
AMPX: Amprius Technologies, Inc.
AMPXOct 9, 2026 · close 9.44
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 |
|---|---|---|---|---|---|
| 41Moderate | Amprius Technologies, Inc. | $42k 13,527 shares | -3% | +270% from low-22% from high | |
| 54Moderate | Amprius Technologies, Inc. | $322k 166,706 shares | -14% | - | |
| 22Weak | Amprius Technologies, Inc. | $432k 150,000 shares | -137% | +9% from low-72% from high | |
| 25Weak | Amprius Technologies, Inc. | $664k 150,000 shares | -100% | +70% from low-56% from high | |
| 25Weak | Amprius Technologies, Inc. | $666k 150,000 shares | -100% | +50% from low-61% from high | |
| 40Moderate | Amprius Technologies, Inc. | $608k 150,000 shares | -314% | +57% from low-60% from high | |
| 23Weak | Amprius Technologies, Inc. | $106k 27,631 shares | -100% | +42% from low-65% from high | |
| 20Weak | Amprius Technologies, Inc. | $367k 122,369 shares | -493% | +24% from low-70% from high | |
| 25Weak | Amprius Technologies, Inc. | $632k 150,000 shares | -213% | +26% from low-64% 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 |
|---|---|---|---|---|---|
| Feb 24, 2025 | AMPX Amprius Technologies, Inc. | 13,527 0.01% of outstanding | $42k | Feb 21, 2025 | none |
| Nov 21, 2024 | AMPX Amprius Technologies, Inc. | 18,170 0.02% of outstanding | $36k | Nov 21, 2024 | $286k |
| Nov 21, 2024 | AMPX AMPRIUS TECHNOLOGIES, INC. | 15,000 0.01% of outstanding | $29k | Nov 21, 2024 | $257k |
| Nov 20, 2024 | AMPX AMPRIUS TECHNOLOGIES, INC. | 133,536 0.13% of outstanding | $257k | Nov 20, 2024 | none |
| Mar 5, 2024 | AMPX AMPRIUS TECHNOLOGIES INC | 150,000 0.17% of outstanding | $440k | Mar 5, 2024 | $1.7M |
| Feb 6, 2024 | AMPX AMPRIUS TECHNOLOGIES INC | 150,000 0.17% of outstanding | $608k | Feb 6, 2024 | $1.7M |
| Jan 2, 2024 | AMPX AMPRIUS TECHNOLOGIES INC | 150,000 0.17% of outstanding | $794k | Jan 2, 2024 | $1.7M |
| Dec 5, 2023 | AMPX AMPRIUS TECHNOLOGIES INC | 150,000 0.17% of outstanding | $668k | Dec 5, 2023 | $1.8M |
| Nov 7, 2023 | AMPX AMPRIUS TECHNOLOGIES INC | 150,000 0.17% of outstanding | $513k | Nov 7, 2023 | $1.3M |
Transactions
The newest 50 of 52 rows this insider has filed.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Mar 10, 2025 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock | +3,471 | $0.98 | $3,402 | 422,668 | Mar 12, 2025 |
| Mar 10, 2025 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative | -3,471 | $0.00 | $0 | 0 | Mar 12, 2025 |
| Feb 21, 2025 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock | -13,527 | $3.13 | $42k | 419,197 | Feb 24, 2025 |
| Nov 20, 2024 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stockindirect: See Footnote | -133,536 | $1.92 | $257k | 1,039,187 | Nov 22, 2024 |
| Nov 21, 2024 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stockindirect: See Footnote | -15,000 | $1.96 | $29k | 1,040,950 | Nov 22, 2024 |
| Nov 21, 2024 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock | -18,170 | $1.96 | $36k | 454,131 | Nov 22, 2024 |
| Oct 23, 2024 | AMPX Amprius Technologies, Inc. | AGrant or award Stock Option (right to buy)derivative | +3,471 | - | - | 3,471 | Oct 25, 2024 |
| Oct 23, 2024 | AMPX Amprius Technologies, Inc. | AGrant or award Stock Option (right to buy)derivative | +27,768 | - | - | 27,768 | Oct 25, 2024 |
| Mar 19, 2024 | AMPX Amprius Technologies, Inc. | AGrant or award Common stock | +558,930 | $0.00 | $0 | 558,930 | Mar 19, 2024 |
| Mar 5, 2024 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +109,800 | $0.05 | $5,490 | 109,800 | Mar 7, 2024 |
| Mar 5, 2024 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -109,800 | $2.92 | $320k | 0 | Mar 7, 2024 |
| Mar 6, 2024 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +40,200 | $0.05 | $2,010 | 40,200 | Mar 7, 2024 |
| Mar 6, 2024 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -40,200 | $2.78 | $112k | 0 | Mar 7, 2024 |
| Mar 5, 2024 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -109,800 | $0.00 | $0 | 1,174,051 | Mar 7, 2024 |
| Mar 6, 2024 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -40,200 | $0.00 | $0 | 1,133,851 | Mar 7, 2024 |
| Feb 6, 2024 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +150,000 | $0.05 | $7,500 | 150,000 | Feb 7, 2024 |
| Feb 6, 2024 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -150,000 | $4.43 | $664k | 0 | Feb 7, 2024 |
| Feb 6, 2024 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -150,000 | $0.00 | $0 | 1,283,851 | Feb 7, 2024 |
| Jan 2, 2024 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +150,000 | $0.05 | $7,500 | 150,000 | Jan 4, 2024 |
| Jan 2, 2024 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -124,634 | $4.32 | $538k | 25,366 | Jan 4, 2024 |
| Jan 2, 2024 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -25,366 | $5.05 | $128k | 0 | Jan 4, 2024 |
| Jan 2, 2024 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -150,000 | $0.00 | $0 | 1,433,851 | Jan 4, 2024 |
| Dec 5, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +47,756 | $0.05 | $2,388 | 47,756 | Dec 7, 2023 |
| Dec 5, 2023 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -47,756 | $4.28 | $204k | 0 | Dec 7, 2023 |
| Dec 6, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +47,767 | $0.05 | $2,388 | 47,767 | Dec 7, 2023 |
| Dec 6, 2023 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -47,767 | $4.02 | $192k | 0 | Dec 7, 2023 |
| Dec 7, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +54,477 | $0.05 | $2,724 | 54,477 | Dec 7, 2023 |
| Dec 7, 2023 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -54,477 | $3.88 | $211k | 0 | Dec 7, 2023 |
| Dec 5, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -47,756 | $0.00 | $0 | 1,686,095 | Dec 7, 2023 |
| Dec 6, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -47,767 | $0.00 | $0 | 1,638,328 | Dec 7, 2023 |
| Dec 7, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -54,477 | $0.00 | $0 | 1,583,851 | Dec 7, 2023 |
| Nov 20, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +27,631 | $0.05 | $1,382 | 27,631 | Nov 21, 2023 |
| Nov 20, 2023 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -27,631 | $3.84 | $106k | 0 | Nov 21, 2023 |
| Nov 20, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -27,631 | $0.00 | $0 | 1,733,851 | Nov 21, 2023 |
| Nov 7, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +24,809 | $0.05 | $1,240 | 24,809 | Nov 9, 2023 |
| Nov 7, 2023 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -24,809 | $3.24 | $80k | 0 | Nov 9, 2023 |
| Nov 8, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +48,052 | $0.05 | $2,403 | 48,052 | Nov 9, 2023 |
| Nov 8, 2023 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -48,052 | $3.05 | $147k | 0 | Nov 9, 2023 |
| Nov 9, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +49,508 | $0.05 | $2,475 | 49,508 | Nov 9, 2023 |
| Nov 9, 2023 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -49,508 | $2.82 | $140k | 0 | Nov 9, 2023 |
| Nov 7, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -24,809 | $0.00 | $0 | 1,859,042 | Nov 9, 2023 |
| Nov 8, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -48,052 | $0.00 | $0 | 1,810,990 | Nov 9, 2023 |
| Nov 9, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -49,508 | $0.00 | $0 | 1,761,482 | Nov 9, 2023 |
| Oct 10, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +70,329 | $0.05 | $3,516 | 70,329 | Oct 12, 2023 |
| Oct 10, 2023 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -70,329 | $4.36 | $307k | 0 | Oct 12, 2023 |
| Oct 11, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +56,702 | $0.05 | $2,835 | 56,702 | Oct 12, 2023 |
| Oct 11, 2023 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -56,702 | $4.16 | $236k | 0 | Oct 12, 2023 |
| Oct 12, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Common stock10b5-1 | +22,969 | $0.05 | $1,148 | 22,969 | Oct 12, 2023 |
| Oct 12, 2023 | AMPX Amprius Technologies, Inc. | SOpen-market sale Common stock10b5-1 | -22,969 | $3.90 | $90k | 0 | Oct 12, 2023 |
| Oct 10, 2023 | AMPX Amprius Technologies, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -70,329 | $0.00 | $0 | 1,963,522 | Oct 12, 2023 |
50 of 52 rows shown.
Questions about Jonathan Bornstein
Answered from the filings on this page, as of the latest one.
Is Jonathan Bornstein buying or selling?
Not in the last 12 months. Jonathan Bornstein's latest open-market trade on SEC Form 4 was sold $42k of AMPX on Feb 21, 2025.
How did Jonathan Bornstein's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Jonathan Bornstein has 0.
Where does Jonathan Bornstein file Form 4?
Jonathan Bornstein has filed Form 4 at AMPX (Amprius Technologies, Inc.) as President of Amprius Lab. 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.