Mark Reddish
Insider
First SEC filing: April 20, 2012 · Latest: April 20, 2012
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 |
|---|---|---|---|---|---|---|---|---|---|
| Oct. 16, 2018 | MRKR | A | 4,106 | · | · | 36,110 Direct | +12.83% | Acquired | (price as of 2026-10-02) |
| Aug. 29, 2017 | MRKR | A | 13,115 | · | · | 32,004 Direct | +69.43% | Acquired | (price as of 2026-10-02) |
| Nov. 12, 2015 | MRKR | A | 150,000 | · | · | 154,500 Direct | +3333.33% | Acquired | (price as of 2026-10-02) |
| Feb. 26, 2014 | MRKR | J | 225,000 | $0.80 | $180,000 | 226,667 Direct | +13497.30% | Acquired | -98.9% (price as of 2026-10-02) |
| April 30, 2012 | MRKR | A | 2,500 | · | · | 4,500 Direct | +125.00% | Acquired | (price as of 2026-10-02) |
| Feb. 16, 2011 | MRKR | A | 2,000 | · | · | 2,000 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 |
|---|---|---|---|---|---|---|---|
| Nov. 12, 2015 | MRKR | Employee Stock Option (Right to Buy) | Common Stock | · | Nov. 12, 2025 | 150,000 | Acquired |
| April 30, 2012 | MRKR | Employee Stock Option (Right to Buy) | Common Stock | · | April 30, 2022 | 2,500 | Acquired |
| Feb. 16, 2011 | MRKR | Employee Stock Option (Right to Buy) | Common Stock | · | Feb. 16, 2021 | 2,000 | 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 |
|---|---|---|---|---|
| April 20, 2012 | MRKR | Common Stock | 166,667 | Direct |