Insider at

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Insider transactions

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0 buys (P) 0 sells (S) Net: $0 + 7 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
March 26, 2025 GCTK A 1,498 · · 2,045 Direct +273.86% Acquired (price as of 2026-10-02)
April 8, 2024 GCTK A 229 · · 547 Direct +72.01% Acquired (price as of 2026-10-02)
Aug. 24, 2021 GCTK A 318 · · 318 Direct · Acquired (price as of 2026-10-02)
June 1, 2017 GCTK A 22,727 · · 22,727 Direct · Acquired (price as of 2026-10-02)
June 1, 2017 GCTK A 22,727 · · 22,727 Direct · Acquired (price as of 2026-10-02)
June 1, 2017 GCTK A 14,894 · · 14,894 Direct · Acquired (price as of 2026-10-02)
March 17, 2016 GCTK A 26,666 · · 26,666 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.

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DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
June 1, 2017 GCTK Restricted Stock Units Common Stock, par value $0.001 per share (22,727) · · 22,727 Acquired
June 1, 2017 GCTK Restricted Stock Units Common Stock, par value $0.001 per share (22,727) $1.98 · 22,727 Acquired
June 1, 2017 GCTK Option (Right to buy) Common Stock, par value $0.001 per share (14,894) $4.50 June 1, 2027 14,894 Acquired
March 17, 2016 GCTK Option (Right to buy) Common Stock, par value $0.001 per share (26,666) $4.50 March 17, 2016 26,666 Acquired

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

Initial ownership (Form 3) 1 holding

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Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
Aug. 28, 2012 GCTK Common Stock, par value $0.001 per share 48,000 Direct