Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 100 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
Aug. 18, 2026 CTKB M 7,363 · · 4,804,051 Direct +0.15% Acquired (price as of 2026-10-02)
Aug. 18, 2026 CTKB F 1,778 $4.67 $8,303 4,802,273 Direct -0.04% Disposed 25.7% (price as of 2026-10-02)
Aug. 18, 2026 CTKB M 5,525 · · 4,807,798 Direct +0.12% Acquired (price as of 2026-10-02)
Aug. 18, 2026 CTKB F 1,346 $4.67 $6,286 4,806,452 Direct -0.03% Disposed 25.7% (price as of 2026-10-02)
Aug. 18, 2026 CTKB M 6,162 · · 4,812,614 Direct +0.13% Acquired (price as of 2026-10-02)
Aug. 18, 2026 CTKB F 1,501 $4.67 $7,010 4,811,113 Direct -0.03% Disposed 25.7% (price as of 2026-10-02)
Aug. 18, 2026 CTKB M 14,220 · · 4,825,333 Direct +0.30% Acquired (price as of 2026-10-02)
Aug. 18, 2026 CTKB F 3,463 $4.67 $16,172 4,821,870 Direct -0.07% Disposed 25.7% (price as of 2026-10-02)
Aug. 18, 2026 CTKB M 7,363 · · 17,189 Direct -29.99% Disposed (price as of 2026-10-02)
Aug. 18, 2026 CTKB M 5,525 · · 34,995 Direct -13.64% Disposed (price as of 2026-10-02)
Aug. 18, 2026 CTKB M 6,162 · · 63,688 Direct -8.82% Disposed (price as of 2026-10-02)
Aug. 18, 2026 CTKB M 14,220 · · 203,835 Direct -6.52% Disposed (price as of 2026-10-02)
June 12, 2026 CTKB G 135,892 · · 4,796,688 Direct -2.75% Disposed (price as of 2026-10-02)
May 18, 2026 CTKB M 4,908 · · 4,920,841 Direct +0.10% Acquired (price as of 2026-10-02)
May 18, 2026 CTKB F 1,224 $3.55 $4,345 4,919,617 Direct -0.02% Disposed 65.4% (price as of 2026-10-02)
May 18, 2026 CTKB M 3,683 · · 4,923,300 Direct +0.07% Acquired (price as of 2026-10-02)
May 18, 2026 CTKB F 919 $3.55 $3,262 4,922,381 Direct -0.02% Disposed 65.4% (price as of 2026-10-02)
May 18, 2026 CTKB M 4,108 · · 4,926,489 Direct +0.08% Acquired (price as of 2026-10-02)
May 18, 2026 CTKB F 1,025 $3.55 $3,639 4,925,464 Direct -0.02% Disposed 65.4% (price as of 2026-10-02)
May 18, 2026 CTKB M 9,480 · · 4,934,944 Direct +0.19% Acquired (price as of 2026-10-02)
May 18, 2026 CTKB F 2,364 $3.55 $8,392 4,932,580 Direct -0.05% Disposed 65.4% (price as of 2026-10-02)
May 18, 2026 CTKB M 4,908 · · 24,552 Direct -16.66% Disposed (price as of 2026-10-02)
May 18, 2026 CTKB M 3,683 · · 40,520 Direct -8.33% Disposed (price as of 2026-10-02)
May 18, 2026 CTKB M 4,108 · · 69,850 Direct -5.55% Disposed (price as of 2026-10-02)
May 18, 2026 CTKB M 9,480 · · 218,055 Direct -4.17% Disposed (price as of 2026-10-02)
March 13, 2026 CTKB G 1,176,000 · · 4,915,933 Direct -19.30% Disposed (price as of 2026-10-02)
March 10, 2026 CTKB M 9,817 · · 6,084,081 Direct +0.16% Acquired (price as of 2026-10-02)
March 10, 2026 CTKB F 3,047 $4.23 $12,889 6,081,034 Direct -0.05% Disposed 38.8% (price as of 2026-10-02)
March 10, 2026 CTKB M 7,366 · · 6,088,400 Direct +0.12% Acquired (price as of 2026-10-02)
March 10, 2026 CTKB F 2,287 $4.23 $9,674 6,086,113 Direct -0.04% Disposed 38.8% (price as of 2026-10-02)
March 10, 2026 CTKB M 8,217 · · 6,094,330 Direct +0.14% Acquired (price as of 2026-10-02)
March 10, 2026 CTKB F 2,397 $4.23 $10,139 6,091,933 Direct -0.04% Disposed 38.8% (price as of 2026-10-02)
March 10, 2026 CTKB A 120,688 · · 120,688 Direct · Acquired (price as of 2026-10-02)
March 10, 2026 CTKB A 227,535 · · 227,535 Direct · Acquired (price as of 2026-10-02)
March 10, 2026 CTKB M 9,817 · · 29,460 Direct -24.99% Disposed (price as of 2026-10-02)
March 10, 2026 CTKB M 7,366 · · 44,203 Direct -14.28% Disposed (price as of 2026-10-02)
March 10, 2026 CTKB M 8,217 · · 73,958 Direct -10.00% Disposed (price as of 2026-10-02)
Feb. 18, 2026 CTKB M 1,332 · · 6,074,659 Direct +0.02% Acquired (price as of 2026-10-02)
Feb. 18, 2026 CTKB F 395 $4.20 $1,659 6,074,264 Direct -0.01% Disposed 39.8% (price as of 2026-10-02)
Feb. 18, 2026 CTKB M 1,332 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
Nov. 18, 2025 CTKB M 1,981 · · 6,059,400 Direct +0.03% Acquired (price as of 2026-10-02)
Nov. 18, 2025 CTKB F 483 $5.53 $2,671 6,058,917 Direct -0.01% Disposed 6.1% (price as of 2026-10-02)
Nov. 18, 2025 CTKB M 7,363 · · 6,066,280 Direct +0.12% Acquired (price as of 2026-10-02)
Nov. 18, 2025 CTKB F 1,793 $5.53 $9,915 6,064,487 Direct -0.03% Disposed 6.1% (price as of 2026-10-02)
Nov. 18, 2025 CTKB M 5,525 · · 6,070,012 Direct +0.09% Acquired (price as of 2026-10-02)
Nov. 18, 2025 CTKB F 1,346 $5.53 $7,443 6,068,666 Direct -0.02% Disposed 6.1% (price as of 2026-10-02)
Nov. 18, 2025 CTKB M 6,162 · · 6,074,828 Direct +0.10% Acquired (price as of 2026-10-02)
Nov. 18, 2025 CTKB F 1,501 $5.53 $8,301 6,073,327 Direct -0.02% Disposed 6.1% (price as of 2026-10-02)
Nov. 18, 2025 CTKB M 1,981 · · 1,332 Direct -59.79% Disposed (price as of 2026-10-02)
Nov. 18, 2025 CTKB M 7,363 · · 39,277 Direct -15.79% Disposed (price as of 2026-10-02)
Nov. 18, 2025 CTKB M 5,525 · · 51,569 Direct -9.68% Disposed (price as of 2026-10-02)
Nov. 18, 2025 CTKB M 6,162 · · 82,175 Direct -6.98% Disposed (price as of 2026-10-02)
Aug. 18, 2025 CTKB M 1,981 · · 6,044,107 Direct +0.03% Acquired (price as of 2026-10-02)
Aug. 18, 2025 CTKB F 588 $4.06 $2,387 6,043,519 Direct -0.01% Disposed 44.6% (price as of 2026-10-02)
Aug. 18, 2025 CTKB M 7,363 · · 6,050,882 Direct +0.12% Acquired (price as of 2026-10-02)
Aug. 18, 2025 CTKB F 2,184 $4.06 $8,867 6,048,698 Direct -0.04% Disposed 44.6% (price as of 2026-10-02)
Aug. 18, 2025 CTKB M 5,525 · · 6,054,223 Direct +0.09% Acquired (price as of 2026-10-02)
Aug. 18, 2025 CTKB F 1,498 $4.06 $6,082 6,052,725 Direct -0.02% Disposed 44.6% (price as of 2026-10-02)
Aug. 18, 2025 CTKB M 6,162 · · 6,058,887 Direct +0.10% Acquired (price as of 2026-10-02)
Aug. 18, 2025 CTKB F 1,468 $4.06 $5,960 6,057,419 Direct -0.02% Disposed 44.6% (price as of 2026-10-02)
Aug. 18, 2025 CTKB M 1,981 · · 3,313 Direct -37.42% Disposed (price as of 2026-10-02)
Aug. 18, 2025 CTKB M 7,363 · · 46,640 Direct -13.63% Disposed (price as of 2026-10-02)
Aug. 18, 2025 CTKB M 5,525 · · 57,094 Direct -8.82% Disposed (price as of 2026-10-02)
Aug. 18, 2025 CTKB M 6,162 · · 88,337 Direct -6.52% Disposed (price as of 2026-10-02)
May 19, 2025 CTKB M 1,981 · · 6,033,783 Direct +0.03% Acquired (price as of 2026-10-02)
May 19, 2025 CTKB F 588 $2.69 $1,582 6,033,195 Direct -0.01% Disposed 118.2% (price as of 2026-10-02)
May 19, 2025 CTKB M 4,908 · · 6,038,103 Direct +0.08% Acquired (price as of 2026-10-02)
May 19, 2025 CTKB F 1,456 $2.69 $3,917 6,036,647 Direct -0.02% Disposed 118.2% (price as of 2026-10-02)
May 19, 2025 CTKB M 3,683 · · 6,040,330 Direct +0.06% Acquired (price as of 2026-10-02)
May 19, 2025 CTKB F 1,093 $2.69 $2,940 6,039,237 Direct -0.02% Disposed 118.2% (price as of 2026-10-02)
May 19, 2025 CTKB M 4,108 · · 6,043,345 Direct +0.07% Acquired (price as of 2026-10-02)
May 19, 2025 CTKB F 1,219 $2.69 $3,279 6,042,126 Direct -0.02% Disposed 118.2% (price as of 2026-10-02)
May 19, 2025 CTKB M 1,981 · · 5,294 Direct -27.23% Disposed (price as of 2026-10-02)
May 19, 2025 CTKB M 4,908 · · 54,003 Direct -8.33% Disposed (price as of 2026-10-02)
May 19, 2025 CTKB M 3,683 · · 62,619 Direct -5.55% Disposed (price as of 2026-10-02)
May 19, 2025 CTKB M 4,108 · · 94,499 Direct -4.17% Disposed (price as of 2026-10-02)
March 10, 2025 CTKB M 9,817 · · 6,029,532 Direct +0.16% Acquired (price as of 2026-10-02)
March 10, 2025 CTKB F 2,911 $4.36 $12,692 6,026,621 Direct -0.05% Disposed 34.6% (price as of 2026-10-02)
March 10, 2025 CTKB M 7,366 · · 6,033,987 Direct +0.12% Acquired (price as of 2026-10-02)
March 10, 2025 CTKB F 2,185 $4.36 $9,527 6,031,802 Direct -0.04% Disposed 34.6% (price as of 2026-10-02)
March 10, 2025 CTKB M 9,817 · · 58,911 Direct -14.28% Disposed (price as of 2026-10-02)
March 10, 2025 CTKB M 7,366 · · 66,302 Direct -10.00% Disposed (price as of 2026-10-02)
March 4, 2025 CTKB A 156,250 · · 156,250 Direct · Acquired (price as of 2026-10-02)
March 4, 2025 CTKB A 98,607 · · 98,607 Direct · Acquired (price as of 2026-10-02)
Feb. 18, 2025 CTKB M 1,981 · · 6,020,303 Direct +0.03% Acquired (price as of 2026-10-02)
Feb. 18, 2025 CTKB F 588 $5.31 $3,122 6,019,715 Direct -0.01% Disposed 10.5% (price as of 2026-10-02)
Feb. 18, 2025 CTKB M 1,981 · · 7,275 Direct -21.40% Disposed (price as of 2026-10-02)
Nov. 18, 2024 CTKB M 1,981 · · 6,009,056 Direct +0.03% Acquired (price as of 2026-10-02)
Nov. 18, 2024 CTKB F 483 $6.03 $2,912 6,008,573 Direct -0.01% Disposed -2.7% (price as of 2026-10-02)
Nov. 18, 2024 CTKB M 7,363 · · 6,015,936 Direct +0.12% Acquired (price as of 2026-10-02)
Nov. 18, 2024 CTKB F 1,793 $6.03 $10,812 6,014,143 Direct -0.03% Disposed -2.7% (price as of 2026-10-02)
Nov. 18, 2024 CTKB M 5,525 · · 6,019,668 Direct +0.09% Acquired (price as of 2026-10-02)
Nov. 18, 2024 CTKB F 1,346 $6.03 $8,116 6,018,322 Direct -0.02% Disposed -2.7% (price as of 2026-10-02)
Nov. 18, 2024 CTKB M 1,981 · · 9,256 Direct -17.63% Disposed (price as of 2026-10-02)
Nov. 18, 2024 CTKB M 7,363 · · 68,728 Direct -9.68% Disposed (price as of 2026-10-02)
Nov. 18, 2024 CTKB M 5,525 · · 73,668 Direct -6.98% Disposed (price as of 2026-10-02)
Aug. 19, 2024 CTKB M 1,981 · · 5,997,918 Direct +0.03% Acquired (price as of 2026-10-02)
Aug. 19, 2024 CTKB F 588 $5.53 $3,252 5,997,330 Direct -0.01% Disposed 6.1% (price as of 2026-10-02)
Aug. 19, 2024 CTKB M 7,363 · · 6,004,693 Direct +0.12% Acquired (price as of 2026-10-02)
Aug. 19, 2024 CTKB F 1,797 $5.53 $9,937 6,002,896 Direct -0.03% Disposed 6.1% (price as of 2026-10-02)

Showing latest 100 of 195 transactions

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
Aug. 18, 2026 CTKB Restricted Stock Units Common Stock (7,363) · · 7,363 Disposed
Aug. 18, 2026 CTKB Restricted Stock Units Common Stock (5,525) · · 5,525 Disposed
Aug. 18, 2026 CTKB Restricted Stock Units Common Stock (6,162) · · 6,162 Disposed
Aug. 18, 2026 CTKB Restricted Stock Units Common Stock (14,220) · · 14,220 Disposed
May 18, 2026 CTKB Restricted Stock Units Common Stock (4,908) · · 4,908 Disposed
May 18, 2026 CTKB Restricted Stock Units Common Stock (3,683) · · 3,683 Disposed
May 18, 2026 CTKB Restricted Stock Units Common Stock (4,108) · · 4,108 Disposed
May 18, 2026 CTKB Restricted Stock Units Common Stock (9,480) · · 9,480 Disposed
March 10, 2026 CTKB Employee Stock Option (right to buy) Common Stock (120,688) $4.23 March 9, 2036 120,688 Acquired
March 10, 2026 CTKB Restricted Stock Units Common Stock (227,535) · · 227,535 Acquired
March 10, 2026 CTKB Restricted Stock Units Common Stock (9,817) · · 9,817 Disposed
March 10, 2026 CTKB Restricted Stock Units Common Stock (7,366) · · 7,366 Disposed
March 10, 2026 CTKB Restricted Stock Units Common Stock (8,217) · · 8,217 Disposed
Feb. 18, 2026 CTKB Restricted Stock Units Common Stock (1,332) · · 1,332 Disposed
Nov. 18, 2025 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
Nov. 18, 2025 CTKB Restricted Stock Units Common Stock (7,363) · · 7,363 Disposed
Nov. 18, 2025 CTKB Restricted Stock Units Common Stock (5,525) · · 5,525 Disposed
Nov. 18, 2025 CTKB Restricted Stock Units Common Stock (6,162) · · 6,162 Disposed
Aug. 18, 2025 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
Aug. 18, 2025 CTKB Restricted Stock Units Common Stock (7,363) · · 7,363 Disposed
Aug. 18, 2025 CTKB Restricted Stock Units Common Stock (5,525) · · 5,525 Disposed
Aug. 18, 2025 CTKB Restricted Stock Units Common Stock (6,162) · · 6,162 Disposed
May 19, 2025 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
May 19, 2025 CTKB Restricted Stock Units Common Stock (4,908) · · 4,908 Disposed
May 19, 2025 CTKB Restricted Stock Units Common Stock (3,683) · · 3,683 Disposed
May 19, 2025 CTKB Restricted Stock Units Common Stock (4,108) · · 4,108 Disposed
March 10, 2025 CTKB Restricted Stock Units Common Stock (9,817) · · 9,817 Disposed
March 10, 2025 CTKB Restricted Stock Units Common Stock (7,366) · · 7,366 Disposed
March 4, 2025 CTKB Employee Stock Option (right to buy) Common Stock (156,250) $4.31 March 4, 2035 156,250 Acquired
March 4, 2025 CTKB Restricted Stock Units Common Stock (98,607) · · 98,607 Acquired
Feb. 18, 2025 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
Nov. 18, 2024 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
Nov. 18, 2024 CTKB Restricted Stock Units Common Stock (7,363) · · 7,363 Disposed
Nov. 18, 2024 CTKB Restricted Stock Units Common Stock (5,525) · · 5,525 Disposed
Aug. 19, 2024 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
Aug. 19, 2024 CTKB Restricted Stock Units Common Stock (7,363) · · 7,363 Disposed
Aug. 19, 2024 CTKB Restricted Stock Units Common Stock (5,525) · · 5,525 Disposed
May 20, 2024 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
May 20, 2024 CTKB Restricted Stock Units Common Stock (4,908) · · 4,980 Disposed
May 20, 2024 CTKB Restricted Stock Units Common Stock (3,683) · · 3,683 Disposed
March 11, 2024 CTKB Restricted Stock Units Common Stock (9,817) · · 9,817 Disposed
March 6, 2024 CTKB Employee Stock Option (right to buy) Common Stock (131,578) $7.07 March 6, 2034 131,578 Acquired
March 6, 2024 CTKB Restricted Stock Units Common Stock (88,401) · · 88,401 Acquired
Feb. 20, 2024 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
Nov. 18, 2023 CTKB Restricted Stock Units Common Stock (7,363) · · 7,363 Disposed
Nov. 18, 2023 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
Aug. 18, 2023 CTKB Restricted Stock Units Common Stock (7,363) · · 7,363 Disposed
Aug. 18, 2023 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
May 18, 2023 CTKB Restricted Stock Units Common Stock (4,908) · · 4,908 Disposed
May 18, 2023 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
March 3, 2023 CTKB Restricted Stock Units Common Stock (117,813) · · 117,813 Acquired
March 3, 2023 CTKB Employee Stock Option (Right to Buy) Common Stock (178,062) $10.61 March 3, 2033 178,062 Acquired
Feb. 21, 2023 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
Nov. 18, 2022 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
Aug. 18, 2022 CTKB Restricted Stock Units Common Stock (1,981) · · 1,981 Disposed
May 18, 2022 CTKB Restricted Stock Units Common Stock (2,642) · · 2,642 Disposed
March 7, 2022 CTKB Stock Option (Right to Buy) Common Stock (62,456) $0.25 June 28, 2027 62,456 Disposed
March 7, 2022 CTKB Stock Option (Right to Buy) Common Stock (10,555) $0.92 July 24, 2030 10,555 Disposed
Feb. 28, 2022 CTKB Restricted Stock Units Common Stock (31,708) · · 31,708 Acquired
Feb. 28, 2022 CTKB Stock Option (Right to Buy) Common Stock (47,841) $13.64 Feb. 28, 2032 47,841 Acquired
July 22, 2021 CTKB Stock Option (Right to Buy) Common Stock (125,000) $17.00 July 22, 2031 125,000 Acquired

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

Initial ownership (Form 3) 3 holdings

07

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

DateTickerSecuritySharesOwnership
July 22, 2021 CTKB Common Stock 8,139,792 Direct
July 22, 2021 CTKB Stock Option (Right to Buy)→ Common Stock (62,456) 62,456 Direct
July 22, 2021 CTKB Stock Option (Right to Buy)→ Common Stock (26,666) 26,666 Direct

Compensation (DEF 14A)

08

Matched by name from proxy statements (DEF 14A) — verify against the filing.

CTKB

CTO
Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2025 $425,000 · $425,000 $425,000 $166,550 · $15,870 $1,457,420
2024 $424,959 · $624,995 $624,996 $167,646 · $13,954 $1,856,550
2023 $424,000 · · $1,250,000 $114,210 · $31,912 $3,070,122

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.