Ronen Tchelet

Insider

First SEC filing: Feb. 13, 2019 · Latest: Feb. 13, 2019

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.
Compensation Executive pay disclosed in company proxy statements.

Insider at

DYAI selling Dec. 11, 2019

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 61 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

61 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Jan. 2, 2020	DYAI	A	75,000	—	—	75,000 Direct	—	Acquired	(price as of 2026-08-19)
Dec. 11, 2019	DYAI	M	4,575	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Dec. 11, 2019	DYAI	S 10b5-1	4,575	$5.80	$26,535	0 Direct	-100.00%	Disposed	-87.1% (price as of 2026-08-19)
Dec. 11, 2019	DYAI	M	4,575	$1.41	$6,451	10,000 Direct	+84.33%	Acquired	-46.8% (price as of 2026-08-19)
Dec. 10, 2019	DYAI	M	5,425	—	—	4,575 Direct	-54.25%	Disposed	(price as of 2026-08-19)
Dec. 10, 2019	DYAI	S 10b5-1	5,425	$5.84	$31,682	4,575 Direct	-54.25%	Disposed	-87.2% (price as of 2026-08-19)
Dec. 10, 2019	DYAI	M	5,425	$1.41	$7,649	5,425 Direct	—	Acquired	-46.8% (price as of 2026-08-19)
Nov. 11, 2019	DYAI	M	10,000	—	—	10,000 Direct	-50.00%	Disposed	(price as of 2026-08-19)
Nov. 11, 2019	DYAI	S 10b5-1	10,000	$5.99	$59,900	0 Direct	-100.00%	Disposed	-87.5% (price as of 2026-08-19)
Nov. 11, 2019	DYAI	M	10,000	$1.41	$14,100	10,000 Direct	—	Acquired	-46.8% (price as of 2026-08-19)
Oct. 11, 2019	DYAI	M	5,218	—	—	20,000 Direct	-20.69%	Disposed	(price as of 2026-08-19)
Oct. 11, 2019	DYAI	S 10b5-1	5,218	$6.08	$31,725	0 Direct	-100.00%	Disposed	-87.7% (price as of 2026-08-19)
Oct. 11, 2019	DYAI	M	5,218	$1.41	$7,357	5,218 Direct	—	Acquired	-46.8% (price as of 2026-08-19)
Oct. 10, 2019	DYAI	M	4,782	—	—	25,218 Direct	-15.94%	Disposed	(price as of 2026-08-19)
Oct. 10, 2019	DYAI	S 10b5-1	4,782	$6.04	$28,883	0 Direct	-100.00%	Disposed	-87.6% (price as of 2026-08-19)
Oct. 10, 2019	DYAI	M	4,782	$1.41	$6,743	4,782 Direct	—	Acquired	-46.8% (price as of 2026-08-19)
Sept. 10, 2019	DYAI	M	10,000	—	—	30,000 Direct	-25.00%	Disposed	(price as of 2026-08-19)
Sept. 10, 2019	DYAI	S 10b5-1	10,000	$5.27	$52,700	0 Direct	-100.00%	Disposed	-85.8% (price as of 2026-08-19)
Sept. 10, 2019	DYAI	M	10,000	$1.41	$14,100	10,000 Direct	—	Acquired	-46.8% (price as of 2026-08-19)
Aug. 13, 2019	DYAI	M	6,300	—	—	40,000 Direct	-13.61%	Disposed	(price as of 2026-08-19)
Aug. 13, 2019	DYAI	S 10b5-1	6,300	$5.75	$36,225	0 Direct	-100.00%	Disposed	-87.0% (price as of 2026-08-19)
Aug. 13, 2019	DYAI	M	6,300	$1.41	$8,883	6,300 Direct	—	Acquired	-46.8% (price as of 2026-08-19)
Aug. 12, 2019	DYAI	M	3,700	—	—	46,300 Direct	-7.40%	Disposed	(price as of 2026-08-19)
Aug. 12, 2019	DYAI	S 10b5-1	3,700	$5.72	$21,164	0 Direct	-100.00%	Disposed	-86.9% (price as of 2026-08-19)
Aug. 12, 2019	DYAI	M	3,700	$1.41	$5,217	3,700 Direct	—	Acquired	-46.8% (price as of 2026-08-19)
July 10, 2019	DYAI	M	10,000	—	—	50,000 Direct	-16.67%	Disposed	(price as of 2026-08-19)
July 10, 2019	DYAI	S 10b5-1	10,000	$5.87	$58,700	0 Direct	-100.00%	Disposed	-87.2% (price as of 2026-08-19)
July 10, 2019	DYAI	M	10,000	$1.41	$14,100	10,000 Direct	—	Acquired	-46.8% (price as of 2026-08-19)
June 18, 2019	DYAI	M	417	—	—	60,000 Direct	-0.69%	Disposed	(price as of 2026-08-19)
June 18, 2019	DYAI	M	2,083	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 18, 2019	DYAI	M	2,083	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 18, 2019	DYAI	M	2,084	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 18, 2019	DYAI	M	2,083	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 18, 2019	DYAI	M	2,083	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 18, 2019	DYAI	M	2,084	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 18, 2019	DYAI	M	2,083	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 18, 2019	DYAI	M	2,083	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 18, 2019	DYAI	M	2,084	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 18, 2019	DYAI	M	833	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 18, 2019	DYAI	S 10b5-1	20,000	$6.44	$128,800	0 Direct	-100.00%	Disposed	-88.4% (price as of 2026-08-19)
June 18, 2019	DYAI	M	417	$1.41	$588	20,000 Direct	+2.13%	Acquired	-46.8% (price as of 2026-08-19)
June 18, 2019	DYAI	M	2,083	$1.41	$2,937	19,583 Direct	+11.90%	Acquired	-46.8% (price as of 2026-08-19)
June 18, 2019	DYAI	M	2,083	$1.41	$2,937	17,500 Direct	+13.51%	Acquired	-46.8% (price as of 2026-08-19)
June 18, 2019	DYAI	M	2,084	$1.41	$2,938	15,417 Direct	+15.63%	Acquired	-46.8% (price as of 2026-08-19)
June 18, 2019	DYAI	M	2,083	$1.41	$2,937	13,333 Direct	+18.52%	Acquired	-46.8% (price as of 2026-08-19)
June 18, 2019	DYAI	M	2,083	$1.41	$2,937	11,250 Direct	+22.72%	Acquired	-46.8% (price as of 2026-08-19)
June 18, 2019	DYAI	M	2,084	$1.41	$2,938	9,167 Direct	+29.42%	Acquired	-46.8% (price as of 2026-08-19)
June 18, 2019	DYAI	M	2,083	$1.41	$2,937	7,083 Direct	+41.66%	Acquired	-46.8% (price as of 2026-08-19)
June 18, 2019	DYAI	M	2,083	$1.41	$2,937	5,000 Direct	+71.41%	Acquired	-46.8% (price as of 2026-08-19)
June 18, 2019	DYAI	M	2,084	$1.41	$2,938	2,917 Direct	+250.18%	Acquired	-46.8% (price as of 2026-08-19)
June 18, 2019	DYAI	M	833	$1.41	$1,175	833 Direct	—	Acquired	-46.8% (price as of 2026-08-19)
June 17, 2019	DYAI	M	1,250	—	—	833 Direct	-60.01%	Disposed	(price as of 2026-08-19)
June 17, 2019	DYAI	M	2,083	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 17, 2019	DYAI	M	2,084	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 17, 2019	DYAI	M	2,083	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 17, 2019	DYAI	M	2,083	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 17, 2019	DYAI	M	2,084	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 17, 2019	DYAI	M	2,083	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 17, 2019	DYAI	M	2,083	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 17, 2019	DYAI	M	2,084	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 17, 2019	DYAI	M	2,083	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 17, 2019	DYAI	S 10b5-1	20,000	$6.11	$122,200	0 Direct	-100.00%	Disposed	-87.7% (price as of 2026-08-19)
June 17, 2019	DYAI	M	1,250	$1.41	$1,762	20,000 Direct	+6.67%	Acquired	-46.8% (price as of 2026-08-19)
June 17, 2019	DYAI	M	2,083	$1.41	$2,937	18,750 Direct	+12.50%	Acquired	-46.8% (price as of 2026-08-19)
June 17, 2019	DYAI	M	2,084	$1.41	$2,938	16,667 Direct	+14.29%	Acquired	-46.8% (price as of 2026-08-19)
June 17, 2019	DYAI	M	2,083	$1.41	$2,937	14,583 Direct	+16.66%	Acquired	-46.8% (price as of 2026-08-19)
June 17, 2019	DYAI	M	2,083	$1.41	$2,937	12,500 Direct	+20.00%	Acquired	-46.8% (price as of 2026-08-19)
June 17, 2019	DYAI	M	2,084	$1.41	$2,938	10,417 Direct	+25.01%	Acquired	-46.8% (price as of 2026-08-19)
June 17, 2019	DYAI	M	2,083	$1.41	$2,937	8,333 Direct	+33.33%	Acquired	-46.8% (price as of 2026-08-19)
June 17, 2019	DYAI	M	2,083	$1.41	$2,937	6,250 Direct	+49.99%	Acquired	-46.8% (price as of 2026-08-19)
June 17, 2019	DYAI	M	2,084	$1.41	$2,938	4,167 Direct	+100.05%	Acquired	-46.8% (price as of 2026-08-19)
June 17, 2019	DYAI	M	2,083	$1.41	$2,937	2,083 Direct	—	Acquired	-46.8% (price as of 2026-08-19)

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
Jan. 2, 2020	DYAI	Stock Option	Common Stock (75,000)	$5.27	Jan. 1, 2030	75,000	Acquired
Dec. 11, 2019	DYAI	Stock Option	Common Stock (4,575)	$1.41	April 30, 2024	4,575	Disposed
Dec. 10, 2019	DYAI	Stock Option	Common Stock (5,425)	$1.41	April 30, 2024	5,425	Disposed
Nov. 11, 2019	DYAI	Stock Option	Common Stock (10,000)	$1.41	April 30, 2024	10,000	Disposed
Oct. 11, 2019	DYAI	Stock Option	Common Stock (5,218)	$1.41	April 30, 2024	5,218	Disposed
Oct. 10, 2019	DYAI	Stock Option	Common Stock (4,782)	$1.41	April 30, 2024	4,782	Disposed
Sept. 10, 2019	DYAI	Stock Option	Common Stock (10,000)	$1.41	April 30, 2024	10,000	Disposed
Aug. 13, 2019	DYAI	Stock Option	Common Stock (6,300)	$1.41	April 30, 2024	6,300	Disposed
Aug. 12, 2019	DYAI	Stock Option	Common Stock (3,700)	$1.41	April 30, 2024	3,700	Disposed
July 10, 2019	DYAI	Stock Option	Common Stock (10,000)	$1.41	April 30, 2024	10,000	Disposed
June 18, 2019	DYAI	Stock Option	Common Stock (417)	$1.41	April 30, 2024	417	Disposed
June 18, 2019	DYAI	Stock Option	Common Stock (2,083)	$1.41	April 30, 2024	2,083	Disposed
June 18, 2019	DYAI	Stock Option	Common Stock (2,083)	$1.41	April 30, 2024	2,083	Disposed
June 18, 2019	DYAI	Stock Option	Common Stock (2,084)	$1.41	April 30, 2024	2,084	Disposed
June 18, 2019	DYAI	Stock Option	Common Stock (2,083)	$1.41	April 30, 2024	2,083	Disposed
June 18, 2019	DYAI	Stock Option	Common Stock (2,083)	$1.41	April 30, 2024	2,083	Disposed
June 18, 2019	DYAI	Stock Option	Common Stock (2,084)	$1.41	April 30, 2024	2,084	Disposed
June 18, 2019	DYAI	Stock Option	Common Stock (2,083)	$1.41	April 30, 2024	2,083	Disposed
June 18, 2019	DYAI	Stock Option	Common Stock (2,083)	$1.41	April 30, 2024	2,083	Disposed
June 18, 2019	DYAI	Stock Option	Common Stock (2,084)	$1.41	April 30, 2024	2,084	Disposed
June 18, 2019	DYAI	Stock Option	Common Stock (833)	$1.41	April 30, 2024	833	Disposed
June 17, 2019	DYAI	Stock Option	Common Stock (1,250)	$1.41	April 30, 2024	1,250	Disposed
June 17, 2019	DYAI	Stock Option	Common Stock (2,083)	$1.41	April 30, 2024	2,083	Disposed
June 17, 2019	DYAI	Stock Option	Common Stock (2,084)	$1.41	April 30, 2024	2,084	Disposed
June 17, 2019	DYAI	Stock Option	Common Stock (2,083)	$1.41	April 30, 2024	2,083	Disposed
June 17, 2019	DYAI	Stock Option	Common Stock (2,083)	$1.41	April 30, 2024	2,083	Disposed
June 17, 2019	DYAI	Stock Option	Common Stock (2,084)	$1.41	April 30, 2024	2,084	Disposed
June 17, 2019	DYAI	Stock Option	Common Stock (2,083)	$1.41	April 30, 2024	2,083	Disposed
June 17, 2019	DYAI	Stock Option	Common Stock (2,083)	$1.41	April 30, 2024	2,083	Disposed
June 17, 2019	DYAI	Stock Option	Common Stock (2,084)	$1.41	April 30, 2024	2,084	Disposed
June 17, 2019	DYAI	Stock Option	Common Stock (2,083)	$1.41	April 30, 2024	2,083	Disposed

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

Initial ownership (Form 3) 27 holdings

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

Date	Ticker	Security	Shares	Ownership
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (100,000)	100,000	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (50,000)	50,000	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (60,000)	60,000	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,084)	2,084	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,084)	2,084	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,084)	2,084	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,084)	2,084	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,084)	2,084	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,084)	2,084	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (2,083)	2,083	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (60,417)	60,417	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (50,000)	50,000	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (50,000)	50,000	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (50,000)	50,000	Direct
Feb. 13, 2019	DYAI	Stock Option→ Common Stock (50,000)	50,000	Direct

Compensation (DEF 14A)

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

DYAI

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2019	$207,647	$41,193	—	$57,000	—	—	—	$305,840
2018	$212,320	—	—	$23,400	—	—	$11,759	$247,479

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