Keith Katkin
CIK 1314596 · View on SEC EDGAR ↗
Insider
First SEC filing: April 5, 2022 · Latest: April 5, 2022
On this page
Insider at
Insider transactions
0 buys (P)
1 sells (S)
Net:
$-128,183
+ 29 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
29 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| April 30, 2026 | EBS | S 10b5-1 | 15,481 | $8.28 | $128,183 | 96,294 Direct | -13.85% | Disposed | -41.7% (price as of 2026-08-19) |
| May 23, 2025 | EBS | S 10b5-1 | 7,844 | $6.30 | $49,417 | 86,431 Direct | -8.32% | Disposed | -23.4% (price as of 2026-08-19) |
| May 19, 2025 | SNDX | P | 10,000 | $9.11 | $91,100 | 100,000 Direct | +11.11% | Acquired | 125.4% (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 |
|---|---|---|---|---|---|---|---|
| April 30, 2026 | EBS | Stock Options (Right to Buy) | Common Stock | $7.99 | April 30, 2033 | 11,296 | Acquired |
| Jan. 10, 2026 | ELDN | Restricted Stock Units | Common Stock (8,575) | — | — | 8,575 | Disposed |
| April 30, 2025 | EBS | Stock Option (Right to Buy) | Common Stock | $5.45 | April 29, 2032 | 15,824 | Acquired |
| Jan. 10, 2025 | ELDN | Restricted Stock Units | Common Stock (8,575) | — | — | 8,575 | Acquired |
| Jan. 10, 2025 | ELDN | Stock Option (right to buy) | Common Stock (77,175) | $4.04 | Jan. 10, 2035 | 77,175 | Acquired |
| May 23, 2024 | EBS | Stock Option (Right to Buy) | Common Stock | $5.02 | May 22, 2031 | 25,748 | Acquired |
| May 1, 2023 | ELDN | Stock Option (right to buy) | Common Stock (752,185) | $2.30 | May 1, 2033 | 752,185 | Acquired |
| Feb. 1, 2023 | ELDN | Stock Option (right to buy) | Common Stock (20,000) | $3.08 | Feb. 1, 2033 | 20,000 | Acquired |
| Feb. 1, 2022 | ELDN | Stock Option (right to buy) | Common Stock (20,000) | $3.97 | Feb. 1, 2032 | 20,000 | Acquired |
| May 19, 2021 | RIGL | Stock Option (Right to Buy) | Common Stock (30,000) | $3.64 | May 19, 2031 | 30,000 | Acquired |
| Sept. 11, 2020 | ELDN | Stock Option (Right to Buy) | Series X1 Convertible Preferred Stock [F2] (5,907) | $500.00 | Sept. 11, 2030 | 5,907 | Acquired |
| May 15, 2020 | RIGL | Stock Option (Right to Buy) | Common Stock (55,000) | $1.76 | May 15, 2030 | 55,000 | Acquired |
| July 11, 2019 | ELDN | Stock Option (Right to Buy) | Common Stock (20,000) | $0.88 | July 11, 2029 | 20,000 | Acquired |
| May 23, 2019 | RIGL | Stock Option (Right to Buy) | Common Stock (55,000) | $2.02 | May 23, 2029 | 55,000 | Acquired |
| June 13, 2018 | ELDN | Stock Option (Right to Buy) | Common Stock (9,100) | $6.18 | June 13, 2028 | 9,100 | Acquired |
| May 17, 2018 | RIGL | Stock Option (Right to Buy) | Common Stock (40,000) | $3.98 | May 17, 2028 | 40,000 | Acquired |
| June 30, 2017 | ELDN | Stock Option (Right to Buy) | Common Stock (36,000) | $5.85 | June 30, 2027 | 36,000 | Acquired |
| May 12, 2017 | RIGL | Stock Option (Right to Buy) | Common Stock (40,000) | $2.61 | May 12, 2027 | 40,000 | Acquired |
| May 11, 2016 | RIGL | Stock Option (Right to Buy) | Common Stock (40,000) | $2.40 | May 11, 2026 | 40,000 | Acquired |
| June 29, 2015 | RIGL | Stock Option (Right to Buy) | Common Stock (80,000) | $3.26 | June 29, 2025 | 80,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 4 holdings
Securities held when first becoming an insider, per SEC Form 3.