Insider at

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Insider transactions

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0 buys (P) 0 sells (S) Net: $0 + 16 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

16 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Nov. 14, 2022 CTKB S 10b5-1 16,000 $14.69 $235,040 3,000 Direct -84.21% Disposed -60.0% (price as of 2026-10-02)
July 22, 2021 CTKB P 3,000 $17.00 $51,000 3,000 Direct · Acquired -65.5% (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 10, 2026 CTKB Restricted Stock Units Common Stock (43,973) · · 43,973 Disposed
June 18, 2025 CTKB Restricted Stock Units Common Stock (43,973) · · 43,973 Acquired
June 18, 2025 CTKB Director Stock Option (right to buy) Common Stock (23,809) $3.07 June 18, 2035 23,809 Acquired
June 5, 2025 CTKB Restricted Stock Units Common Stock (15,706) · · 15,706 Disposed
June 5, 2024 CTKB Restricted Stock Units Common Stock (15,706) · · 15,706 Acquired
June 5, 2024 CTKB Stock Option (right to buy) Common Stock (23,076) $5.73 June 5, 2034 23,076 Acquired
June 14, 2023 CTKB Stock Option (right to buy) Common Stock (30,242) $8.38 June 14, 2033 30,242 Acquired
Nov. 29, 2022 CTKB Stock Option (Right to Buy) Common Stock (13,333) $0.92 July 24, 2030 13,333 Disposed
Nov. 29, 2022 CTKB Stock Option (Right to Buy) Common Stock (10,666) $0.40 Oct. 12, 2028 10,666 Disposed
Nov. 14, 2022 CTKB Stock Option (Right to Buy) Common Stock (16,000) $0.40 Oct. 12, 2028 16,000 Disposed
June 1, 2022 CTKB Stock Option (right to buy) Common Stock (25,789) $9.67 June 1, 2032 25,789 Acquired

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

Initial ownership (Form 3) 2 holdings

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

DateTickerSecuritySharesOwnership
July 22, 2021 CTKB Stock Option (Right to Buy)→ Common Stock (26,666) 26,666 Direct
July 22, 2021 CTKB Stock Option (Right to Buy)→ Common Stock (13,333) 13,333 Direct