Thomas C Chen
CIK 1998682 · View on SEC EDGAR ↗
Insider
First SEC filing: March 28, 2025 · Latest: March 28, 2025
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Insider at
Insider transactions
2 buys (P)
0 sells (S)
Net:
$140,067
+ 7 non-open-market transactions below
Avg return of open purchases vs now:
31.9%
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
7 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 17, 2026 | NTHI | P | 2,472 | $4.04 | $9,987 | 583,531 Direct | +0.43% | Acquired | 28.7% (price as of 2026-08-18) |
| Aug. 14, 2026 | NTHI | P | 33,787 | $3.85 | $130,080 | 581,059 Direct | +6.17% | Acquired | 35.1% (price as of 2026-08-18) |
| May 22, 2025 | NTHI | P | 2,709 | $7.38 | $19,992 | 551,668 Direct | +0.49% | Acquired | -29.5% (price as of 2026-08-18) |
| May 21, 2025 | NTHI | P | 2,759 | $7.25 | $20,003 | 548,959 Direct | +0.51% | Acquired | -28.3% (price as of 2026-08-18) |
| May 12, 2025 | NTHI | P | 400 | $7.00 | $2,800 | 546,200 Direct | +0.07% | Acquired | -25.7% (price as of 2026-08-18) |
| March 26, 2025 | NTHI | S | 38,250 | $25.00 | $956,250 | 262,225 Indirect | -12.73% | Disposed | -79.2% (price as of 2026-08-18) |
| March 26, 2025 | NTHI | S | 983 | $19.13 | $18,805 | 261,242 Indirect | -0.37% | Disposed | -72.8% (price as of 2026-08-18) |
| March 26, 2025 | NTHI | S | 983 | $19.13 | $18,805 | 261,242 Indirect | -0.37% | Disposed | -72.8% (price as of 2026-08-18) |
| March 26, 2025 | NTHI | S | 38,250 | $25.00 | $956,250 | 262,225 Indirect | -12.73% | Disposed | -79.2% (price as of 2026-08-18) |
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 26, 2025 | NTHI | Warrant (right to buy) | Common Stock (79,688) | $12.00 | — | 79,688 | Disposed |
| March 26, 2025 | NTHI | Warrant (right to buy) | Common Stock (79,688) | $12.00 | — | 79,688 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).