Stephen W Webster
CIK 1438421 · View on SEC EDGAR ↗
Insider
First SEC filing: Jan. 7, 2021 · Latest: Jan. 7, 2021
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 19 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
19 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 29, 2018 | VKTX | P | 8,000 | $5.21 | $41,680 | 8,000 Direct | — | Acquired | 563.0% (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 |
|---|---|---|---|---|---|---|---|
| June 18, 2026 | NXTC | Stock Option (Right to Buy) | Common Stock (2,340) | $2.02 | June 17, 2036 | 2,340 | Acquired |
| June 16, 2026 | CGEM | Stock Option (Right to Buy) | Common Stock (25,319) | $13.55 | June 16, 2026 | 25,319 | Acquired |
| June 8, 2026 | ELOX | Stock Option (Right to Buy) | Common Stock (13,587) | $11.00 | June 8, 2036 | 13,587 | Acquired |
| June 20, 2025 | NXTC | Stock Option (Right to Buy) | Common Stock (18,700) | $0.47 | June 19, 2035 | 18,700 | Acquired |
| June 12, 2025 | CGEM | Stock Option (Right to Buy) | Common Stock (38,513) | $8.95 | June 12, 2035 | 38,513 | Acquired |
| June 26, 2024 | CGEM | Stock Option (Right to Buy) | Common Stock (15,806) | $16.50 | June 26, 2034 | 15,806 | Acquired |
| June 20, 2024 | NXTC | Stock Option (Right to Buy) | Common Stock (18,700) | $1.50 | June 19, 2034 | 18,700 | Acquired |
| June 22, 2023 | NXTC | Stock Option (Right to Buy) | Common Stock (14,250) | $1.62 | June 21, 2033 | 14,250 | Acquired |
| June 8, 2023 | CGEM | Stock Option (Right to Buy) | Common Stock (18,450) | $13.00 | June 7, 2033 | 18,450 | Acquired |
| June 22, 2022 | CGEM | Stock Option (Right to Buy) | Common Stock (16,475) | $12.73 | June 21, 2032 | 16,475 | Acquired |
| Sept. 16, 2021 | CGEM | Stock Option (Right to Buy) | Common Stock (7,800) | $28.80 | Sept. 15, 2031 | 7,800 | Acquired |
| June 11, 2020 | NXTC | Stock Option (Right to Buy) | Common Stock (14,250) | $24.13 | June 10, 2030 | 14,250 | Acquired |
| Jan. 2, 2020 | VKTX | Stock Option (Right to Buy) | Common Stock (22,000) | $7.95 | Jan. 2, 2030 | 22,000 | Acquired |
| June 13, 2019 | NXTC | Stock Option (Right to Buy) | Common Stock (22,000) | $15.57 | June 12, 2029 | 22,000 | Acquired |
| Jan. 2, 2019 | VKTX | Stock Option (Right to Buy) | Common Stock (22,000) | $8.32 | Jan. 2, 2029 | 22,000 | Acquired |
| Jan. 2, 2018 | VKTX | Stock Option (Right to Buy) | Common Stock (16,000) | $4.48 | Jan. 2, 2028 | 16,000 | Acquired |
| Jan. 3, 2017 | VKTX | Stock Option (Right to Buy) | Common Stock (16,000) | $1.19 | Jan. 3, 2027 | 16,000 | Acquired |
| Jan. 4, 2016 | VKTX | Stock Option (Right to Buy) | Common Stock (16,000) | $3.33 | Jan. 4, 2026 | 16,000 | Acquired |
| April 28, 2015 | VKTX | Stock Option (Right to Buy) | Common Stock (20,786) | $8.00 | April 28, 2025 | 20,786 | 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. 7, 2021 | CGEM | Stock Option (Right to Buy)→ Common Stock (25,289) | 25,289 | Direct |