Isaac Blech
Insider
First SEC filing: Aug. 30, 2016 · Latest: Aug. 30, 2016
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
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 |
|---|---|---|---|---|---|---|---|---|---|
| March 15, 2019 | PDSB | M | 10,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 15, 2019 | PDSB | M | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| March 15, 2019 | PDSB | M | 10,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| March 15, 2019 | PDSB | M | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| March 13, 2019 | XFOR | A | 6,854 | · | · | 6,854 Direct | · | Acquired | (price as of 2026-10-02) |
| March 13, 2019 | XFOR | A | 70,796 | · | · | 70,796 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2018 | AVTX | A | 8,519 | · | · | 8,519 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 28, 2018 | AVTX | A | 6,041 | · | · | 6,041 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 14, 2018 | PDSB | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 29, 2018 | AVTX | A | 6,881 | · | · | 6,881 Direct | · | Acquired | (price as of 2026-10-02) |
| June 19, 2018 | PDSB | A | 20,000 | · | · | 20,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 15, 2018 | AVTX | A | 8,357 | · | · | 8,357 Direct | · | Acquired | (price as of 2026-10-02) |
| March 31, 2018 | AVTX | A | 6,111 | · | · | 6,111 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2017 | AVTX | A | 8,267 | · | · | 8,267 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 30, 2017 | AVTX | A | 27,560 | · | · | 27,560 Direct | · | Acquired | (price as of 2026-10-02) |
| June 30, 2017 | AVTX | A | 8,357 | · | · | 8,357 Direct | · | Acquired | (price as of 2026-10-02) |
| June 30, 2017 | AVTX | A | 36,982 | · | · | 36,982 Direct | · | Acquired | (price as of 2026-10-02) |
| June 20, 2017 | PDSB | A | 15,000 | $10.15 | $152,250 | 15,000 Direct | · | Acquired | -99.6% (price as of 2026-10-02) |
| March 31, 2017 | AVTX | A | 26,342 | · | · | 26,342 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2016 | AVTX | A | 17,827 | · | · | 17,827 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 7, 2016 | NSPR | A | 12,500 | · | · | 12,500 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 30, 2016 | AVTX | A | 3,723 | · | · | 3,723 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 31, 2016 | CRVO | A | 204,907 | · | · | 204,907 Direct | · | Acquired | (price as of 2026-10-02) |
| June 30, 2016 | NSPR | A | 48,524 | · | · | 48,524 Direct | · | Acquired | (price as of 2026-10-02) |
| June 30, 2016 | AVTX | A | 6,881 | · | · | 6,881 Direct | · | Acquired | (price as of 2026-10-02) |
| June 21, 2016 | PDSB | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 18, 2016 | AVTX | A | 8,357 | · | · | 8,357 Direct | · | Acquired | (price as of 2026-10-02) |
| May 3, 2016 | NSPR | A | 780,000 | · | · | 780,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 9, 2015 | AVTX | A | 16,714 | · | · | 16,714 Direct | · | Acquired | (price as of 2026-10-02) |
| Oct. 20, 2015 | AVTX | C | 4,077,475 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| Oct. 20, 2015 | AVTX | C | 133,333 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Oct. 20, 2015 | AVTX | C | 182,030 | · | · | 385,452 Indirect | +89.48% | Acquired | (price as of 2026-10-02) |
| Oct. 20, 2015 | AVTX | C | 5,952 | · | · | 203,452 Direct | +3.01% | Acquired | (price as of 2026-10-02) |
| July 24, 2014 | CRVO | A | 87,449 | · | · | 87,449 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 7, 2014 | CRVO | A | 17,441 | · | · | 17,441 Direct | · | Acquired | (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 |
|---|---|---|---|---|---|---|---|
| March 15, 2019 | PDSB | Restricted Stock Units | Common Stock | · | · | 10,000 | Disposed |
| March 15, 2019 | PDSB | Restricted Stock Units | Common Stock | · | · | 10,000 | Disposed |
| March 13, 2019 | XFOR | Stock Option (right to buy) | Common Stock | $18.66 | March 13, 2029 | 6,854 | Acquired |
| March 13, 2019 | XFOR | Stock Option (right to buy) | Common Stock | $6.84 | Dec. 14, 2025 | 70,796 | Acquired |
| Dec. 31, 2018 | AVTX | Stock Option (Right to Buy) | Common Stock | $3.23 | Dec. 30, 2028 | 8,519 | Acquired |
| Sept. 28, 2018 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $4.67 | Sept. 28, 2028 | 6,041 | Acquired |
| Aug. 14, 2018 | PDSB | Restricted Stock Units | Common Stock | · | · | 10,000 | Acquired |
| June 29, 2018 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $4.34 | June 29, 2028 | 6,881 | Acquired |
| June 19, 2018 | PDSB | Stock Option (Right To Purchase) | Common Stock | $1.10 | · | 20,000 | Acquired |
| May 15, 2018 | AVTX | Stock Option (Right to Buy) | Common Stock | $3.71 | May 14, 2028 | 8,357 | Acquired |
| March 31, 2018 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $4.29 | March 30, 2028 | 6,111 | Acquired |
| Dec. 31, 2017 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $3.20 | Dec. 30, 2027 | 8,267 | Acquired |
| Sept. 30, 2017 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $0.85 | Sept. 29, 2027 | 27,560 | Acquired |
| June 30, 2017 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $0.57 | June 29, 2027 | 8,357 | Acquired |
| June 30, 2017 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $0.57 | June 29, 2027 | 36,982 | Acquired |
| June 20, 2017 | PDSB | Stock Option (right To Purchase) | Common Stock | $10.15 | June 20, 2027 | 15,000 | Acquired |
| March 31, 2017 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $0.68 | March 30, 2027 | 26,342 | Acquired |
| Dec. 31, 2016 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $0.88 | Dec. 30, 2026 | 17,827 | Acquired |
| Dec. 7, 2016 | NSPR | Options to purchase Common Stock | Common Stock | $3.04 | Dec. 7, 2026 | 12,500 | Acquired |
| Sept. 30, 2016 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $4.23 | Sept. 29, 2026 | 3,723 | Acquired |
| Aug. 31, 2016 | CRVO | Stock Option (Right to Buy) [F1] | Common Stock | $8.00 | Aug. 31, 2026 | 204,907 | Acquired |
| June 30, 2016 | NSPR | Options (right to buy) | Common Stock | $0.33 | June 30, 2026 | 48,524 | Acquired |
| June 30, 2016 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $2.20 | June 29, 2026 | 6,881 | Acquired |
| June 21, 2016 | PDSB | Stock Option (right To Purchase) | Common Stock | $9.34 | June 21, 2026 | 15,000 | Acquired |
| May 18, 2016 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $3.52 | May 17, 2026 | 8,357 | Acquired |
| May 3, 2016 | NSPR | Options to purchase Common Stock | Common Stock | $0.50 | May 3, 2026 | 780,000 | Acquired |
| Nov. 9, 2015 | AVTX | Employee Stock Option (Right to Buy) | Common Stock | $5.80 | Oct. 31, 2025 | 16,714 | Acquired |
| Oct. 20, 2015 | AVTX | Series A Convertible Preferred Stock | Common Stock | · | · | 4,077,475 | Disposed |
| Oct. 20, 2015 | AVTX | Series A Convertible Preferred Stock | Common Stock | · | · | 133,333 | Disposed |
| July 24, 2014 | CRVO | Stock Option (right to buy) | Common Stock | $3.92 | July 24, 2024 | 87,449 | Acquired |
| Jan. 7, 2014 | CRVO | Stock Option (right to buy) | Common Stock | $3.00 | Jan. 6, 2024 | 17,441 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 18 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Aug. 30, 2016 | CRVO | Common Stock | 28,334 | Direct |
| Aug. 30, 2016 | CRVO | Common Stock | 11,905 | Indirect |
| Aug. 30, 2016 | CRVO | Common Stock | 154,763 | Indirect |
| Aug. 30, 2016 | CRVO | Stock Option (Right to Buy) | 1,745 | Direct |
| Aug. 30, 2016 | CRVO | Stock Option (Right to Buy) | 8,745 | Direct |
| Aug. 30, 2016 | CRVO | Warrant (Right to Buy) | 5,000 | Direct |
| Aug. 30, 2016 | CRVO | Warrant (Right to Buy) | 7,500 | Direct |
| Oct. 14, 2015 | AVTX | Common Stock | 197,500 | Direct |
| Oct. 14, 2015 | AVTX | Stock Option (Right to Buy) | 53,571 | Direct |
| Oct. 14, 2015 | AVTX | Stock Option (Right to Buy) | 10,714 | Direct |
| Oct. 14, 2015 | AVTX | Series A Convertible Preferred Stock | · | Direct |
| Oct. 14, 2015 | AVTX | Series A Convertible Preferred Stock | · | Indirect |
| Oct. 14, 2015 | AVTX | Warrant (Right to Buy) | 1,190 | Direct |
| Oct. 14, 2015 | AVTX | Warrant (Right to Buy) | 36,406 | Indirect |
| Sept. 30, 2015 | PDSB | Stock Option (right to purchase) | 730,940 | Direct |
| Sept. 30, 2015 | PDSB | Stock Option (right to purchase) | 11,695 | Direct |
| Sept. 30, 2015 | PDSB | Stock Option (right to purchase) | 4,385 | Direct |
| Sept. 30, 2015 | PDSB | Stock Option (right to purchase) | 21,928 | Direct |