Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 6 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

No open-market trades on record; showing all filings.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
May 24, 2022 MRKR A 80,000 · · 80,000 Direct · Acquired (price as of 2026-10-06)
June 8, 2021 MRKR A 12,658 · · 55,223 Direct +29.74% Acquired (price as of 2026-10-06)
May 9, 2019 MRKR A 7,260 · · 25,543 Direct +39.71% Acquired (price as of 2026-10-06)
Oct. 16, 2018 MRKR A 5,168 · · 18,283 Direct +39.41% Acquired (price as of 2026-10-06)
Aug. 29, 2017 MRKR A 13,115 · · 13,115 Direct · Acquired (price as of 2026-10-06)
March 19, 2015 MRKR A 150,000 · · 150,000 Direct · Acquired (price as of 2026-10-06)

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
May 24, 2022 MRKR Stock Option (Right to Buy) Common Stock (80,000) $0.34 May 23, 2032 80,000 Acquired
March 19, 2015 MRKR Employee Stock Option (Right to Buy) [F1] Common Stock (150,000) $0.21 March 19, 2025 150,000 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).