AMPX-WT · Amprius Technologies, Inc. (Warrants) — research history

The investigation triggered on a cluster of 4 Form 4 filings in the prior 14 days, but all four were director RSU vestings at $0 strike price (code A), not open-market purchases. The actual open-market activity is inverted: Director Donald Dixon sold ~$2.25M worth of stock across two transactions ($40K at $19.13 on June 9 and 85K shares at $17.17 on June 15). No CEO or CFO purchase signal exists in the cluster window. A short-seller report from Manatee Research (May 20) alleged exaggerated orders, hollow manufacturing, and related-party concerns — the stock dropped ~7% that day but recovered. Q1 EPS missed badly (-0.04 actual vs -0.015 estimate). The common is near its 52-week high ($24.23 peak), has lost momentum (below both 20DMA and 50DMA, MACD bearish cross 7 bars ago), yet carries a forward P/E of ~279x with negative FCF. The warrants trade at $6.98 on AMPX common at $16.17 — roughly 40 cents in-the-money relative to the $11.50 exercise price but deeply out-of-the-money relative to intrinsic value given the company's pre-profitability and elevated risk profile.

The 4-Form-4 trigger for AMPX-WT was mechanically satisfied by director RSU vestings (code A at $0) on June 12, not open-market purchases. Zero cash insider buys in the past 90 days; one material seller (Donald Dixon unloaded 40k shares at ~$19 in early June). The underlying common trades near its 52-week high on a frothy forward P/E of ~267x with negative earnings and a short-seller attack from Manatee Research still fresh. A warrant exchange closing May 18, 2026 reduced dilution by ~62% via cashless structure but adds shares outstanding. Next catalyst is Q2 earnings around August 6.

The investigation trigger cited 4 Form 4 filings in 14 days with an open-market P/S verified — but after reading every filing, the signal is a false positive. All recent transactions are S-code tax-withholding sells on RSU vesting by the CEO (Stepien), CTO (Stefan Ionel), and CFO (Sun Kang). These are non-discretionary sell-to-cover mandated by equity compensation plans, not discretionary open-market sales indicative of insider conviction. There was ONE M-code filing (Sun Kang exercising options at $1.78/$3.68 strike) but the subsequent sale was also under a pre-established 10b5-1 plan — not an independent purchase decision. The warrants (AMPX-WT) trade on NYE at $11.50 exercise, with the common stock (AMPX) at ~$20.85. While AMPX has compelling fundamental catalysts ($500M new U.S. defense orders, Q1 revenue 2.5x YoY), a recent Manatee Research short report published May 20 raised red flags about exaggerated orders and related-party manufacturing concerns — causing a sharp intraday selloff. The common is up ~600% YoY and near 52w highs with no margin of safety on fundamentals.