Nathan E Walker
First SEC filing: Jan. 18, 2022 · Latest: Feb. 13, 2023
Insider at
Insider transactions
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 |
|---|---|---|---|---|---|---|---|---|---|
| June 26, 2024 | NSTS | F | 3,324 | $9.61 | $31,944 | 60,676 Direct | -5.19% | Disposed | 48.4% (price as of 2026-10-02) |
| June 15, 2023 | NSTS | A | 34,000 | · | · | 64,000 Direct | +113.33% | Acquired | (price as of 2026-10-02) |
| June 15, 2023 | NSTS | A | 85,000 | · | · | 85,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 18, 2022 | NSTS | P | 30,000 | $10.00 | $300,000 | 30,000 Direct | · | Acquired | 42.6% (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 |
|---|---|---|---|---|---|---|---|
| June 15, 2023 | NSTS | Stock Option | Common Stock | $9.36 | June 15, 2033 | 85,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Jan. 18, 2022 | NSTS | No securities beneficially owned | 0 | Direct |
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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $220,085 | $26,000 | · | · | · | · | · | $280,998 |
| 2024 | $198,509 | $24,595 | · | · | · | · | $34,378 | $257,482 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.