Jonathan Bornstein
Insider
First SEC filing: Sept. 16, 2022 · Latest: Sept. 16, 2022
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 10, 2025 | AMPX | M | 3,471 | $0.98 | $3,402 | 422,668 Direct | +0.83% | Acquired | 886.7% (price as of 2026-10-02) |
| March 10, 2025 | AMPX | M | 3,471 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 21, 2025 | AMPX | S | 13,527 | $3.13 | $42,340 | 419,197 Direct | -3.13% | Disposed | 208.9% (price as of 2026-10-02) |
| Nov. 21, 2024 | AMPX | S | 15,000 | $1.96 | $29,400 | 1,040,950 Indirect | -1.42% | Disposed | 393.4% (price as of 2026-10-02) |
| Nov. 21, 2024 | AMPX | S | 18,170 | $1.96 | $35,613 | 454,131 Direct | -3.85% | Disposed | 393.4% (price as of 2026-10-02) |
| Nov. 20, 2024 | AMPX | S | 133,536 | $1.92 | $256,389 | 1,039,187 Indirect | -11.39% | Disposed | 403.6% (price as of 2026-10-02) |
| Oct. 23, 2024 | AMPX | A | 3,471 | · | · | 3,471 Direct | · | Acquired | (price as of 2026-10-02) |
| Oct. 23, 2024 | AMPX | A | 27,768 | · | · | 27,768 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 21, 2024 | AMPX | S | 18,644 | $1.04 | $19,390 | 1,528,251 Direct | -1.21% | Disposed | 829.8% (price as of 2026-10-02) |
| May 22, 2024 | AMPX | S | 8,731 | $1.36 | $11,874 | 1,546,895 Direct | -0.56% | Disposed | 611.0% (price as of 2026-10-02) |
| May 21, 2024 | AMPX | S | 11,171 | $1.33 | $14,857 | 1,555,626 Direct | -0.71% | Disposed | 627.1% (price as of 2026-10-02) |
| April 12, 2024 | AMPX | M | 1,007,867 | $0.05 | $50,393 | 1,566,797 Direct | +180.32% | Acquired | 19240.0% (price as of 2026-10-02) |
| April 12, 2024 | AMPX | M | 1,007,867 | · | · | 1 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| April 2, 2024 | AMPX | M 10b5-1 | 125,983 | $0.05 | $6,299 | 684,913 Direct | +22.54% | Acquired | 19240.0% (price as of 2026-10-02) |
| April 2, 2024 | AMPX | S 10b5-1 | 125,983 | $2.38 | $299,840 | 558,930 Direct | -18.39% | Disposed | 306.3% (price as of 2026-10-02) |
| April 2, 2024 | AMPX | M 10b5-1 | 125,983 | · | · | 1,007,868 Direct | -11.11% | Disposed | (price as of 2026-10-02) |
| March 19, 2024 | AMPX | A | 558,930 | · | · | 558,930 Direct | · | Acquired | (price as of 2026-10-02) |
| March 6, 2024 | AMPX | M 10b5-1 | 40,200 | $0.05 | $2,010 | 40,200 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| March 6, 2024 | AMPX | S 10b5-1 | 40,200 | $2.78 | $111,756 | 0 Direct | -100.00% | Disposed | 247.8% (price as of 2026-10-02) |
| March 6, 2024 | AMPX | M 10b5-1 | 40,200 | · | · | 1,133,851 Direct | -3.42% | Disposed | (price as of 2026-10-02) |
| March 5, 2024 | AMPX | M 10b5-1 | 109,800 | $0.05 | $5,490 | 109,800 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| March 5, 2024 | AMPX | S 10b5-1 | 109,800 | $2.92 | $320,616 | 0 Direct | -100.00% | Disposed | 231.2% (price as of 2026-10-02) |
| March 5, 2024 | AMPX | M 10b5-1 | 109,800 | · | · | 1,174,051 Direct | -8.55% | Disposed | (price as of 2026-10-02) |
| Feb. 6, 2024 | AMPX | M 10b5-1 | 150,000 | $0.05 | $7,500 | 150,000 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Feb. 6, 2024 | AMPX | S 10b5-1 | 150,000 | $4.43 | $664,500 | 0 Direct | -100.00% | Disposed | 118.3% (price as of 2026-10-02) |
| Feb. 6, 2024 | AMPX | M 10b5-1 | 150,000 | · | · | 1,283,851 Direct | -10.46% | Disposed | (price as of 2026-10-02) |
| Jan. 2, 2024 | AMPX | M 10b5-1 | 150,000 | $0.05 | $7,500 | 150,000 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Jan. 2, 2024 | AMPX | S 10b5-1 | 124,634 | $4.32 | $538,419 | 25,366 Direct | -83.09% | Disposed | 123.8% (price as of 2026-10-02) |
| Jan. 2, 2024 | AMPX | S 10b5-1 | 25,366 | $5.05 | $128,098 | 0 Direct | -100.00% | Disposed | 91.5% (price as of 2026-10-02) |
| Jan. 2, 2024 | AMPX | M 10b5-1 | 150,000 | · | · | 1,433,851 Direct | -9.47% | Disposed | (price as of 2026-10-02) |
| Dec. 7, 2023 | AMPX | M 10b5-1 | 54,477 | $0.05 | $2,724 | 54,477 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Dec. 7, 2023 | AMPX | S 10b5-1 | 54,477 | $3.88 | $211,371 | 0 Direct | -100.00% | Disposed | 149.2% (price as of 2026-10-02) |
| Dec. 7, 2023 | AMPX | M 10b5-1 | 54,477 | · | · | 1,583,851 Direct | -3.33% | Disposed | (price as of 2026-10-02) |
| Dec. 6, 2023 | AMPX | M 10b5-1 | 47,767 | $0.05 | $2,388 | 47,767 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Dec. 6, 2023 | AMPX | S 10b5-1 | 47,767 | $4.02 | $192,023 | 0 Direct | -100.00% | Disposed | 140.5% (price as of 2026-10-02) |
| Dec. 6, 2023 | AMPX | M 10b5-1 | 47,767 | · | · | 1,638,328 Direct | -2.83% | Disposed | (price as of 2026-10-02) |
| Dec. 5, 2023 | AMPX | M 10b5-1 | 47,756 | $0.05 | $2,388 | 47,756 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Dec. 5, 2023 | AMPX | S 10b5-1 | 47,756 | $4.28 | $204,396 | 0 Direct | -100.00% | Disposed | 125.9% (price as of 2026-10-02) |
| Dec. 5, 2023 | AMPX | M 10b5-1 | 47,756 | · | · | 1,686,095 Direct | -2.75% | Disposed | (price as of 2026-10-02) |
| Nov. 20, 2023 | AMPX | M 10b5-1 | 27,631 | $0.05 | $1,382 | 27,631 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Nov. 20, 2023 | AMPX | S 10b5-1 | 27,631 | $3.84 | $106,103 | 0 Direct | -100.00% | Disposed | 151.8% (price as of 2026-10-02) |
| Nov. 20, 2023 | AMPX | M 10b5-1 | 27,631 | · | · | 1,733,851 Direct | -1.57% | Disposed | (price as of 2026-10-02) |
| Nov. 9, 2023 | AMPX | M 10b5-1 | 49,508 | $0.05 | $2,475 | 49,508 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Nov. 9, 2023 | AMPX | S 10b5-1 | 49,508 | $2.82 | $139,613 | 0 Direct | -100.00% | Disposed | 242.9% (price as of 2026-10-02) |
| Nov. 9, 2023 | AMPX | M 10b5-1 | 49,508 | · | · | 1,761,482 Direct | -2.73% | Disposed | (price as of 2026-10-02) |
| Nov. 8, 2023 | AMPX | M 10b5-1 | 48,052 | $0.05 | $2,403 | 48,052 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Nov. 8, 2023 | AMPX | S 10b5-1 | 48,052 | $3.05 | $146,559 | 0 Direct | -100.00% | Disposed | 217.0% (price as of 2026-10-02) |
| Nov. 8, 2023 | AMPX | M 10b5-1 | 48,052 | · | · | 1,810,990 Direct | -2.58% | Disposed | (price as of 2026-10-02) |
| Nov. 7, 2023 | AMPX | M 10b5-1 | 24,809 | $0.05 | $1,240 | 24,809 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Nov. 7, 2023 | AMPX | S 10b5-1 | 24,809 | $3.24 | $80,381 | 0 Direct | -100.00% | Disposed | 198.5% (price as of 2026-10-02) |
| Nov. 7, 2023 | AMPX | M 10b5-1 | 24,809 | · | · | 1,859,042 Direct | -1.32% | Disposed | (price as of 2026-10-02) |
| Oct. 12, 2023 | AMPX | M 10b5-1 | 22,969 | $0.05 | $1,148 | 22,969 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Oct. 12, 2023 | AMPX | S 10b5-1 | 22,969 | $3.90 | $89,579 | 0 Direct | -100.00% | Disposed | 147.9% (price as of 2026-10-02) |
| Oct. 12, 2023 | AMPX | M 10b5-1 | 22,969 | · | · | 1,883,851 Direct | -1.20% | Disposed | (price as of 2026-10-02) |
| Oct. 11, 2023 | AMPX | M 10b5-1 | 56,702 | $0.05 | $2,835 | 56,702 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Oct. 11, 2023 | AMPX | S 10b5-1 | 56,702 | $4.16 | $235,880 | 0 Direct | -100.00% | Disposed | 132.5% (price as of 2026-10-02) |
| Oct. 11, 2023 | AMPX | M 10b5-1 | 56,702 | · | · | 1,906,820 Direct | -2.89% | Disposed | (price as of 2026-10-02) |
| Oct. 10, 2023 | AMPX | M 10b5-1 | 70,329 | $0.05 | $3,516 | 70,329 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Oct. 10, 2023 | AMPX | S 10b5-1 | 70,329 | $4.36 | $306,634 | 0 Direct | -100.00% | Disposed | 121.8% (price as of 2026-10-02) |
| Oct. 10, 2023 | AMPX | M 10b5-1 | 70,329 | · | · | 1,963,522 Direct | -3.46% | Disposed | (price as of 2026-10-02) |
| Sept. 20, 2023 | AMPX | M 10b5-1 | 6,484 | $0.05 | $324 | 6,484 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Sept. 20, 2023 | AMPX | S 10b5-1 | 6,484 | $4.23 | $27,427 | 0 Direct | -100.00% | Disposed | 128.6% (price as of 2026-10-02) |
| Sept. 20, 2023 | AMPX | M 10b5-1 | 6,484 | · | · | 2,033,851 Direct | -0.32% | Disposed | (price as of 2026-10-02) |
| Sept. 19, 2023 | AMPX | M 10b5-1 | 143,516 | $0.05 | $7,176 | 143,516 Direct | · | Acquired | 19240.0% (price as of 2026-10-02) |
| Sept. 19, 2023 | AMPX | S 10b5-1 | 143,516 | $4.37 | $627,165 | 0 Direct | -100.00% | Disposed | 121.3% (price as of 2026-10-02) |
| Sept. 19, 2023 | AMPX | M 10b5-1 | 143,516 | · | · | 2,040,335 Direct | -6.57% | Disposed | (price as of 2026-10-02) |
| Sept. 14, 2022 | AMPX | A | 545,962 | · | · | 545,962 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 14, 2022 | AMPX | A | 2,183,851 | · | · | 2,183,851 Direct | · | Acquired | (price as of 2026-10-02) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| March 10, 2025 | AMPX | Stock Option (right to buy) | Common stock | $0.98 | March 17, 2025 | 3,471 | Disposed |
| Oct. 23, 2024 | AMPX | Stock Option (right to buy) | Common stock | $0.98 | March 17, 2025 | 3,471 | Acquired |
| Oct. 23, 2024 | AMPX | Stock Option (right to buy) | Common stock | $0.62 | March 15, 2027 | 27,768 | Acquired |
| April 12, 2024 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 1,007,867 | Disposed |
| April 2, 2024 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 125,983 | Disposed |
| March 6, 2024 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 40,200 | Disposed |
| March 5, 2024 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 109,800 | Disposed |
| Feb. 6, 2024 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 150,000 | Disposed |
| Jan. 2, 2024 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 150,000 | Disposed |
| Dec. 7, 2023 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 54,477 | Disposed |
| Dec. 6, 2023 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 47,767 | Disposed |
| Dec. 5, 2023 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 47,756 | Disposed |
| Nov. 20, 2023 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 27,631 | Disposed |
| Nov. 9, 2023 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 49,508 | Disposed |
| Nov. 8, 2023 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 48,052 | Disposed |
| Nov. 7, 2023 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 24,809 | Disposed |
| Oct. 12, 2023 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 22,969 | Disposed |
| Oct. 11, 2023 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 56,702 | Disposed |
| Oct. 10, 2023 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 70,329 | Disposed |
| Sept. 20, 2023 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 6,484 | Disposed |
| Sept. 19, 2023 | AMPX | Stock Option (right to buy) | Common stock | $0.05 | March 15, 2027 | 143,516 | Disposed |
| Sept. 14, 2022 | AMPX | Stock Option (right to buy) | Common Stock | $2.61 | April 12, 2032 | 545,962 | Acquired |
| Sept. 14, 2022 | AMPX | Stock Option (right to buy) | Common Stock | $0.05 | March 15, 2024 | 2,183,851 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2024 | $390,998 | $324,530 | $1,509,111 | · | · | · | $600 | $2,225,239 |
| 2023 | $390,998 | $324,530 | · | · | · | · | $600 | $716,128 |
| 2022 | $299,998 | $184,946 | · | $871,732 | · | · | $600 | $1,357,276 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.