Da Shengwei (Sean)
CIK 2089104 · View on SEC EDGAR ↗
Activist
First SEC filing: Dec. 17, 2025 · Latest: Dec. 17, 2025
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 4 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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 9, 2025 | AMCI | A | 1,540,000 | — | — | 1,540,000 Indirect | — | Acquired | (price as of 2026-08-20) |
| Dec. 9, 2025 | AMCI | A | 550,000 | — | — | 17,050,000 Indirect | +3.33% | Acquired | (price as of 2026-08-20) |
| Dec. 9, 2025 | AMCI | A | 500,000 | — | — | 16,500,000 Indirect | +3.12% | Acquired | (price as of 2026-08-20) |
| Dec. 9, 2025 | AMCI | A | 16,000,000 | — | — | 16,000,000 Indirect | — | Acquired | (price as of 2026-08-20) |
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 |
|---|---|---|---|---|---|---|---|
| Dec. 9, 2025 | AMCI | Warrant | Common Stock (1,540,000) | $10.00 | Dec. 9, 2030 | 1,540,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).