Nat Krishnamurti

Insider

First SEC filing: Dec. 23, 2019 · Latest: Dec. 23, 2019

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 14 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

14 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 27, 2024	HDSN	A	7,378	—	—	7,378 Direct	—	Acquired	(price as of 2026-08-20)
March 1, 2023	HDSN	A	61,308	—	—	61,308 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 9, 2022	HDSN	S	46,194	$10.13	$467,945	25,207 Direct	-64.70%	Disposed	-43.9% (price as of 2026-08-20)
Nov. 8, 2022	HDSN	F	83,806	$10.80	$905,105	116,401 Direct	-41.86%	Disposed	-47.4% (price as of 2026-08-20)
Nov. 8, 2022	HDSN	S	45,000	$10.66	$479,700	71,401 Direct	-38.66%	Disposed	-46.7% (price as of 2026-08-20)
Nov. 8, 2022	HDSN	M	175,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 8, 2022	HDSN	M	175,000	$0.75	$131,250	200,207 Direct	+694.25%	Acquired	657.3% (price as of 2026-08-20)
Feb. 24, 2022	HDSN	A	50,117	—	—	50,117 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 19, 2019	HDSN	A	125,000	—	—	125,000 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 19, 2019	HDSN	A	175,000	—	—	175,000 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 30, 2018	HDSN	A	247,100	—	—	247,100 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 30, 2018	HDSN	A	195,700	—	—	195,700 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 5, 2018	HDSN	A	3,000	—	—	14,782 Direct	+25.46%	Acquired	(price as of 2026-08-20)
Dec. 19, 2017	HDSN	A	150,000	—	—	0 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 5, 2017	HDSN	A	3,000	—	—	11,782 Direct	+34.16%	Acquired	(price as of 2026-08-20)
Sept. 6, 2016	HDSN	S	5,218	$6.07	$31,673	8,782 Direct	-37.27%	Disposed	-6.4% (price as of 2026-08-20)
Sept. 6, 2016	HDSN	A	14,000	—	—	14,000 Direct	—	Acquired	(price as of 2026-08-20)

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.

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Feb. 27, 2024	HDSN	Stock option	Common Stock (7,378)	$14.89	Feb. 27, 2027	7,378	Acquired
March 1, 2023	HDSN	Stock options	Common Stock (61,308)	$10.09	March 1, 2026	61,308	Acquired
Nov. 8, 2022	HDSN	Stock Option	Common Stock (175,000)	$0.75	Dec. 19, 2029	175,000	Disposed
Feb. 24, 2022	HDSN	Stock Option	Common Stock (50,117)	$3.81	Feb. 24, 2027	50,117	Acquired
Dec. 19, 2019	HDSN	Stock Option (Right to Buy)	Common Stock (125,000)	$0.75	Dec. 19, 2029	125,000	Acquired
Dec. 19, 2019	HDSN	Stock Option (Right to Buy)	Common Stock (175,000)	$0.75	Dec. 19, 2029	175,000	Acquired
Nov. 30, 2018	HDSN	Stock Option (Right to Buy)	Common Stock (247,100)	$1.09	Nov. 30, 2021	247,100	Acquired
Nov. 30, 2018	HDSN	Stock Option (Right to Buy)	Common Stock (195,700)	$1.09	Nov. 30, 2021	195,700	Acquired
Dec. 19, 2017	HDSN	Stock Option (Right to Buy)	Common Stock (150,000)	$5.70	Dec. 19, 2020	150,000	Acquired

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

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

CFO

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2023	$357,444	—	—	$43,750	$81,250	—	$2,800	$485,244
2022	$291,906	—	—	$225,000	$235,000	—	$2,800	$754,706
2021	$282,308	—	—	$107,250	$217,750	—	$2,800	$610,108

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