Matthew Bennett Arnold
Insider
First SEC filing: Jan. 25, 2018 · Latest: Jan. 25, 2018
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 |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 10, 2020 | SLDB | A | 432,432 | $3.70 | $1,599,998 | 3,933,429 Direct | +12.35% | Acquired | -87.7% (price as of 2026-10-02) |
| June 16, 2020 | SLDB | A | 30,000 | · | · | 30,000 Direct | · | Acquired | (price as of 2026-10-02) |
| July 25, 2019 | SLDB | A | 677,419 | $4.65 | $3,149,998 | 3,500,997 Direct | +23.99% | Acquired | -90.2% (price as of 2026-10-02) |
| June 14, 2019 | SLDB | G | 562,715 | · | · | 2,823,578 Direct | -16.62% | Disposed | (price as of 2026-10-02) |
| June 13, 2019 | SLDB | A | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 14, 2019 | SLDB | S 10b5-1 | 3,300 | $32.20 | $106,260 | 3,386,293 Direct | -0.10% | Disposed | -98.6% (price as of 2026-10-02) |
| Jan. 14, 2019 | SLDB | S 10b5-1 | 1,700 | $31.60 | $53,720 | 3,389,593 Direct | -0.05% | Disposed | -98.6% (price as of 2026-10-02) |
| Jan. 7, 2019 | SLDB | S 10b5-1 | 5,000 | $30.08 | $150,400 | 3,391,293 Direct | -0.15% | Disposed | -98.5% (price as of 2026-10-02) |
| Dec. 13, 2018 | SLDB | A | 8,165 | · | · | 8,165 Direct | · | Acquired | (price as of 2026-10-02) |
| July 25, 2018 | SLDB | A | 1,835 | · | · | 1,835 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 |
|---|---|---|---|---|---|---|---|
| June 16, 2020 | SLDB | Director Stock Option (Right to Buy) | Common Stock | $3.03 | June 16, 2030 | 30,000 | Acquired |
| June 13, 2019 | SLDB | Director Stock Option (Right to Buy) | Common Stock | $5.26 | June 13, 2029 | 10,000 | Acquired |
| Dec. 13, 2018 | SLDB | Director Stock Option (Right to Buy) | Common Stock | $23.58 | Dec. 13, 2028 | 8,165 | Acquired |
| July 25, 2018 | SLDB | Director Stock Option (Right to Buy) | Common Stock | $37.89 | July 25, 2028 | 1,835 | 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. 25, 2018 | SLDB | Common Stock | 3,396,293 | Direct |