Christopher W. Hamm
CIK 1782520 · View on SEC EDGAR ↗
Insider
First SEC filing: May 4, 2021 · Latest: May 4, 2021
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 20 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
20 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 15, 2023 | AMPY | P | 20,000 | $6.65 | $133,000 | 115,618 Direct | +20.92% | Acquired | -25.0% (price as of 2026-08-19) |
| March 14, 2023 | AMPY | P | 20,000 | $7.14 | $142,800 | 95,618 Direct | +26.45% | Acquired | -30.2% (price as of 2026-08-19) |
| Dec. 22, 2022 | AMPY | P | 9,000 | $7.79 | $70,110 | 75,618 Direct | +13.51% | Acquired | -36.0% (price as of 2026-08-19) |
| Dec. 22, 2022 | AMPY | P | 8,000 | $7.50 | $60,000 | 66,618 Direct | +13.65% | Acquired | -33.5% (price as of 2026-08-19) |
| Dec. 17, 2019 | AMPY | S | 1,304 | $6.82 | $8,893 | 0 Direct | -100.00% | Disposed | -26.9% (price as of 2026-08-19) |
| Sept. 23, 2019 | AMPY | S | 4,316 | $6.61 | $28,529 | 1,304 Direct | -76.80% | Disposed | -24.6% (price as of 2026-08-19) |
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 |
|---|---|---|---|---|---|---|---|
| July 1, 2026 | AMPY | Restricted Stock Units | Common Stock (43,911) | — | — | 43,911 | Acquired |
| July 1, 2026 | AMPY | Restricted Stock Units | Common Stock (51,043) | — | — | 51,043 | Disposed |
| July 1, 2024 | AMPY | Restricted Stock Units | Common Stock (27,531) | — | — | 27,531 | Acquired |
| July 1, 2024 | AMPY | Restricted Stock Units | Common Stock (26,708) | — | — | 26,708 | Disposed |
| July 1, 2023 | AMPY | Restricted Stock Units | Common Stock (26,708) | — | — | 26,708 | Acquired |
| July 1, 2023 | AMPY | Restricted Stock Units | Common Stock (25,045) | — | — | 25,045 | Disposed |
| July 1, 2022 | AMPY | Restricted Stock Units | Common Stock (25,045) | — | — | 25,045 | Acquired |
| Aug. 6, 2019 | AMPY | Restricted Stock Units | Common Stock (16,155) | — | — | 16,155 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).