Michael G. Bator
Insider
First SEC filing: March 3, 2020 · Latest: March 3, 2020
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
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 8, 2025 | CTSO | A | 44,000 | · | · | 44,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 24, 2025 | CTSO | O | 15,879 | $1.13 | $17,943 | 0 Direct | -100.00% | Disposed | -82.1% (price as of 2026-10-02) |
| Feb. 24, 2025 | CTSO | O | 10,000 | $1.13 | $11,300 | 151,273 Direct | +7.08% | Acquired | -82.1% (price as of 2026-10-02) |
| Jan. 17, 2025 | CTSO | J | 15,879 | · | · | 15,879 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 17, 2025 | CTSO | J | 15,879 | · | · | 15,879 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 17, 2025 | CTSO | X | 15,879 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Jan. 17, 2025 | CTSO | X | 15,879 | $1.00 | $15,879 | 141,273 Direct | +12.66% | Acquired | -79.8% (price as of 2026-10-02) |
| April 2, 2024 | CTSO | A | 44,000 | · | · | 44,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 13, 2023 | CTSO | P | 13,157 | · | · | 13,157 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 13, 2023 | CTSO | P | 37,594 | $1.33 | $50,000 | 125,394 Direct | +42.82% | Acquired | -84.8% (price as of 2026-10-02) |
| Aug. 7, 2023 | CTSO | P | 1,000 | $3.15 | $3,150 | 87,800 Direct | +1.15% | Acquired | -93.6% (price as of 2026-10-02) |
| Aug. 7, 2023 | CTSO | P | 1,000 | $3.20 | $3,200 | 86,800 Direct | +1.17% | Acquired | -93.7% (price as of 2026-10-02) |
| Aug. 4, 2023 | CTSO | P | 1,000 | $3.23 | $3,230 | 85,800 Direct | +1.18% | Acquired | -93.7% (price as of 2026-10-02) |
| July 7, 2023 | CTSO | A | 40,000 | · | · | 40,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 10, 2022 | CTSO | A | 18,975 | · | · | 18,975 Direct | · | Acquired | (price as of 2026-10-02) |
| May 18, 2022 | CTSO | P | 1,000 | $2.21 | $2,210 | 84,800 Direct | +1.19% | Acquired | -90.8% (price as of 2026-10-02) |
| May 18, 2022 | CTSO | P | 2,000 | $2.20 | $4,400 | 83,800 Direct | +2.44% | Acquired | -90.8% (price as of 2026-10-02) |
| May 18, 2022 | CTSO | P | 2,000 | $2.20 | $4,400 | 81,800 Direct | +2.51% | Acquired | -90.8% (price as of 2026-10-02) |
| May 18, 2022 | CTSO | P | 2,000 | $2.20 | $4,400 | 79,800 Direct | +2.57% | Acquired | -90.8% (price as of 2026-10-02) |
| May 18, 2022 | CTSO | P | 2,000 | $2.18 | $4,360 | 77,800 Direct | +2.64% | Acquired | -90.7% (price as of 2026-10-02) |
| May 18, 2022 | CTSO | P | 2,000 | $2.18 | $4,360 | 75,800 Direct | +2.71% | Acquired | -90.7% (price as of 2026-10-02) |
| April 12, 2021 | CTSO | A | 17,250 | · | · | 17,250 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 28, 2020 | CTSO | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| July 22, 2019 | CTSO | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| March 15, 2018 | CTSO | A | 14,450 | · | · | 14,450 Direct | · | Acquired | (price as of 2026-10-02) |
| March 15, 2018 | CTSO | A | 3,300 | · | · | 73,800 Direct | +4.68% | Acquired | (price as of 2026-10-02) |
| June 9, 2017 | CTSO | P | 1,500 | $4.12 | $6,180 | 70,500 Direct | +2.17% | Acquired | -95.1% (price as of 2026-10-02) |
| Feb. 24, 2017 | CTSO | A | 13,750 | · | · | 13,750 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 24, 2017 | CTSO | A | 6,000 | · | · | 69,000 Direct | +9.52% | Acquired | (price as of 2026-10-02) |
| June 7, 2016 | CTSO | A | 12,000 | · | · | 12,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 7, 2016 | CTSO | A | 60,000 | · | · | 63,000 Direct | +2000.00% | Acquired | (price as of 2026-10-02) |
| June 7, 2016 | CTSO | P | 3,000 | $4.88 | $14,640 | 3,000 Direct | · | Acquired | -95.9% (price as of 2026-10-02) |
| June 3, 2016 | CTSO | A | 1,000 | $4.49 | $4,490 | 2,000 Direct | +100.00% | Acquired | -95.5% (price as of 2026-10-02) |
| June 2, 2016 | CTSO | A | 1,000 | $4.49 | $4,490 | 1,000 Direct | · | Acquired | -95.5% (price as of 2026-10-02) |
| July 14, 2015 | CTSO | A | 6,000 | · | · | 6,000 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 |
|---|---|---|---|---|---|---|---|
| Aug. 8, 2025 | CTSO | Stock Option (Right to Buy) | Common Stock | $1.00 | Aug. 8, 2035 | 44,000 | Acquired |
| Feb. 24, 2025 | CTSO | Series A Right Warrants (right to buy) [F1] | Common Stock | · | Feb. 24, 2025 | 15,879 | Disposed |
| Jan. 17, 2025 | CTSO | Series B Right Warrants [F1] | Common Stock | · | April 10, 2025 | 15,879 | Acquired |
| Jan. 17, 2025 | CTSO | Series A Right Warrants [F1] | Common Stock | · | Feb. 24, 2025 | 15,879 | Acquired |
| Jan. 17, 2025 | CTSO | Subscription Rights (right to buy) | Common Stock | $1.00 | Jan. 10, 2025 | 15,879 | Disposed |
| April 2, 2024 | CTSO | Stock Option (Right to Buy) | Common Stock | $0.96 | April 2, 2034 | 44,000 | Acquired |
| Dec. 13, 2023 | CTSO | Common Stock Warrant (Right to Buy) | Common Stock | $2.00 | Dec. 13, 2028 | 13,157 | Acquired |
| July 7, 2023 | CTSO | Stock Option (right to buy) | Common Stock | $3.53 | July 7, 2033 | 40,000 | Acquired |
| Aug. 10, 2022 | CTSO | Stock Option (right to buy) | Common Stock | $1.95 | Aug. 10, 2032 | 18,975 | Acquired |
| April 12, 2021 | CTSO | Stock Option (right to buy) | Common Stock | $8.99 | April 12, 2031 | 17,250 | Acquired |
| Feb. 28, 2020 | CTSO | Stock Option (right to buy) | Common Stock | $6.03 | Feb. 28, 2030 | 15,000 | Acquired |
| July 22, 2019 | CTSO | Stock Option (right to buy) | Common Stock | $7.33 | July 22, 2029 | 15,000 | Acquired |
| March 15, 2018 | CTSO | Stock Option (right to buy) | Common Stock | $7.90 | March 15, 2028 | 14,450 | Acquired |
| Feb. 24, 2017 | CTSO | Stock Option (right to buy) | Common Stock | $5.60 | Feb. 24, 2027 | 13,750 | Acquired |
| June 7, 2016 | CTSO | Stock Option (right to buy) | Common Stock | $4.69 | June 7, 2026 | 12,000 | Acquired |
| July 14, 2015 | CTSO | Stock Option | Common Stock | $6.65 | July 14, 2025 | 6,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).