Tibor Keler

Insider

First SEC filing: March 17, 2008 · Latest: March 17, 2008

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

CLDX selling Dec. 7, 2022

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 21 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

21 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 25, 2026	CLDX	A	115,000	—	—	115,000 Direct	—	Acquired	(price as of 2026-08-21)
June 5, 2025	CLDX	A	93,000	—	—	93,000 Direct	—	Acquired	(price as of 2026-08-21)
June 13, 2024	CLDX	A	93,000	—	—	93,000 Direct	—	Acquired	(price as of 2026-08-21)
June 15, 2023	CLDX	A	92,000	—	—	92,000 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 7, 2022	CLDX	M	16,860	$2.78	$46,871	24,217 Direct	+229.17%	Acquired	1360.3% (price as of 2026-08-21)
Dec. 7, 2022	CLDX	S	16,860	$36.93	$622,640	7,357 Direct	-69.62%	Disposed	9.9% (price as of 2026-08-21)
Dec. 7, 2022	CLDX	M	16,860	—	—	43,140 Direct	-28.10%	Disposed	(price as of 2026-08-21)
June 16, 2022	CLDX	A	91,000	—	—	91,000 Direct	—	Acquired	(price as of 2026-08-21)
June 17, 2021	CLDX	A	91,000	—	—	91,000 Direct	—	Acquired	(price as of 2026-08-21)
June 18, 2020	CLDX	A	108,000	—	—	108,000 Direct	—	Acquired	(price as of 2026-08-21)
June 9, 2020	CLDX	P	5,000	$2.99	$14,950	7,357 Direct	+212.13%	Acquired	1257.7% (price as of 2026-08-21)
June 19, 2019	CLDX	A	60,000	—	—	60,000 Direct	—	Acquired	(price as of 2026-08-21)
June 15, 2018	CLDX	P	16,500	$0.59	$9,735	35,368 Direct	+87.45%	Acquired	358.7% (price as of 2026-08-21)
June 13, 2018	CLDX	A	390,000	—	—	390,000 Direct	—	Acquired	(price as of 2026-08-21)
June 15, 2017	CLDX	A	162,000	—	—	162,000 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 2, 2016	CLDX	P	3,000	$3.32	$9,960	18,868 Direct	+18.91%	Acquired	-18.5% (price as of 2026-08-21)
June 8, 2016	CLDX	A	162,000	—	—	162,000 Direct	—	Acquired	(price as of 2026-08-21)
June 10, 2015	CLDX	A	116,500	—	—	116,500 Direct	—	Acquired	(price as of 2026-08-21)
June 4, 2014	CLDX	A	116,500	—	—	116,500 Direct	—	Acquired	(price as of 2026-08-21)
July 1, 2013	CLDX	A	115,000	—	—	115,000 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 12, 2012	CLDX	A	115,000	—	—	115,000 Direct	—	Acquired	(price as of 2026-08-21)
Aug. 11, 2011	CLDX	P	5,000	$2.50	$12,500	15,868 Direct	+46.01%	Acquired	8.3% (price as of 2026-08-21)
Aug. 5, 2011	CLDX	A	99,000	$2.80	$277,200	99,000 Direct	—	Acquired	-3.3% (price as of 2026-08-21)
Sept. 13, 2010	CLDX	P	5,000	$3.52	$17,600	5,000 Direct	—	Acquired	-23.1% (price as of 2026-08-21)
Jan. 21, 2010	CLDX	A	90,000	$4.50	$405,000	90,000 Direct	—	Acquired	-39.9% (price as of 2026-08-21)
Jan. 6, 2009	CLDX	A	5,868	—	—	5,868 Direct	—	Acquired	(price as of 2026-08-21)
Jan. 6, 2009	CLDX	A	72,250	$8.52	$615,570	72,250 Direct	—	Acquired	-68.2% (price as of 2026-08-21)

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
June 25, 2026	CLDX	Incentive Stock Option (right to buy) [F1]	Common Stock (115,000)	$34.09	June 25, 2036	115,000	Acquired
June 5, 2025	CLDX	Incentive Stock Option (right to buy) [F1]	Common Stock (93,000)	$19.53	June 5, 2035	93,000	Acquired
June 13, 2024	CLDX	Incentive Stock Option (right to buy) [F1]	Common Stock (93,000)	$36.43	June 13, 2034	93,000	Acquired
June 15, 2023	CLDX	Incentive Stock Option (right to buy) [F1]	Common Stock (92,000)	$36.87	June 15, 2033	92,000	Acquired
Dec. 7, 2022	CLDX	Incentive Stock Option (right to buy)	Common Stock (16,860)	$2.78	June 19, 2029	16,860	Disposed
June 16, 2022	CLDX	Incentive Stock Option (right to buy) [F1]	Common Stock (91,000)	$22.48	June 16, 2032	91,000	Acquired
June 17, 2021	CLDX	Incentive Stock Option (right to buy) [F1]	Common Stock (91,000)	$28.00	June 17, 2031	91,000	Acquired
June 18, 2020	CLDX	Incentive Stock Option (right to buy) [F1]	Common Stock (108,000)	$10.38	June 18, 2030	108,000	Acquired
June 19, 2019	CLDX	Incentive Stock Option (right to buy) [F1]	Common Stock (60,000)	$2.78	June 19, 2029	60,000	Acquired
June 13, 2018	CLDX	Incentive Stock Option (right to buy) [F1]	Common Stock (390,000)	$0.60	June 13, 2028	390,000	Acquired
June 15, 2017	CLDX	Incentive Stock Option (right to buy) [F1]	Common Stock (162,000)	$2.32	June 15, 2027	162,000	Acquired
June 8, 2016	CLDX	Incentive Stock Option	Common Stock (162,000)	$4.72	June 8, 2026	162,000	Acquired
June 10, 2015	CLDX	Incentive Stock Option	Common Stock (116,500)	$25.41	June 10, 2025	116,500	Acquired
June 4, 2014	CLDX	Incentive Stock Option	Common Stock (116,500)	$13.45	June 4, 2024	116,500	Acquired
July 1, 2013	CLDX	Incentive Stock Option	Common Stock (115,000)	$16.36	July 1, 2023	115,000	Acquired
Sept. 12, 2012	CLDX	Incentive Stock Option	Common Stock (115,000)	$5.69	Sept. 12, 2022	115,000	Acquired
Aug. 5, 2011	CLDX	Incentive Stock Option	Common Stock (99,000)	$2.80	Aug. 5, 2021	99,000	Acquired
Jan. 21, 2010	CLDX	Incentive Stock Option	Common Stock (90,000)	$4.50	Jan. 21, 2020	90,000	Acquired
Jan. 6, 2009	CLDX	Incentive Stock Option	Common Stock (72,250)	$8.52	Jan. 6, 2019	72,250	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
March 17, 2008	CLDX	Stock Option (right to buy)→ Common Stock	—	Direct