Blane Walter

Insider

First SEC filing: Jan. 8, 2016 · Latest: Jan. 8, 2016

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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

HSDT buying Dec. 22, 2017

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 23 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

23 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 21, 2026	HSDT	A	6,360	—	—	8,542 Direct	+291.48%	Acquired	(price as of 2026-08-19)
May 21, 2026	HSDT	A	18,564	—	—	18,564 Direct	—	Acquired	(price as of 2026-08-19)
March 31, 2026	HSDT	A	2,180	—	—	2,182 Direct	+109000.00%	Acquired	(price as of 2026-08-19)
March 31, 2026	HSDT	A	2,180	—	—	95,634 Direct	+2.33%	Acquired	(price as of 2026-08-19)
March 31, 2026	HSDT	A	23,529	—	—	23,529 Direct	—	Acquired	(price as of 2026-08-19)
July 2, 2025	HSDT	A	2,600	—	—	2,600 Direct	—	Acquired	(price as of 2026-08-19)
Jan. 6, 2025	HSDT	A	10,732	—	—	10,732 Direct	—	Acquired	(price as of 2026-08-19)
July 2, 2024	HSDT	A	31,000	—	—	31,000 Direct	—	Acquired	(price as of 2026-08-19)
May 24, 2023	HSDT	A	284,865	—	—	284,865 Direct	—	Acquired	(price as of 2026-08-19)
May 24, 2023	HSDT	A	83,054	—	—	93,454 Direct	+798.60%	Acquired	(price as of 2026-08-19)
May 23, 2022	HSDT	A	21,605	—	—	21,605 Direct	—	Acquired	(price as of 2026-08-19)
May 23, 2022	HSDT	A	6,049	—	—	9,400 Direct	+180.51%	Acquired	(price as of 2026-08-19)
May 25, 2021	HSDT	A	937	—	—	3,351 Direct	+38.82%	Acquired	(price as of 2026-08-19)
May 25, 2021	HSDT	A	3,063	—	—	3,063 Direct	—	Acquired	(price as of 2026-08-19)
June 10, 2020	HSDT	A	61,218	—	—	114,383 Direct	+115.15%	Acquired	(price as of 2026-08-19)
June 10, 2020	HSDT	A	36,697	—	—	89,862 Direct	+69.02%	Acquired	(price as of 2026-08-19)
Dec. 7, 2019	HSDT	A	20,000	—	—	20,000 Direct	—	Acquired	(price as of 2026-08-19)
Dec. 7, 2019	HSDT	D	20,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Dec. 7, 2019	HSDT	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-19)
Dec. 7, 2019	HSDT	D	10,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
March 28, 2019	HSDT	A	18,990	—	—	18,990 Direct	—	Acquired	(price as of 2026-08-19)
May 15, 2018	HSDT	A	15,000	—	—	15,000 Direct	—	Acquired	(price as of 2026-08-19)
Dec. 22, 2017	HSDT	P	382,653	$1.96	$750,000	382,653 Direct	—	Acquired	-100.0% (price as of 2026-08-19)
Dec. 22, 2017	HSDT	P	382,653	$1.96	$750,000	422,653 Direct	+956.63%	Acquired	-100.0% (price as of 2026-08-19)
Nov. 17, 2017	HSDT	P	20,000	$2.51	$50,200	40,000 Direct	+100.00%	Acquired	-100.0% (price as of 2026-08-19)
Nov. 16, 2017	HSDT	P	20,000	$2.40	$48,000	20,000 Direct	—	Acquired	-100.0% (price as of 2026-08-19)
April 17, 2017	HSDT	A	100,000	—	—	100,000 Direct	—	Acquired	(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
May 21, 2026	HSDT	Stock Option (Right to Buy)	Class A Common Stock (18,564)	$2.36	May 20, 2036	18,564	Acquired
March 31, 2026	HSDT	Stock Option (Right to Buy)	Class A Common Stock (23,529)	$6.88	March 30, 2036	23,529	Acquired
July 2, 2025	HSDT	Stock Option (Right to Buy)	Class A Common Stock (2,600)	$9.76	July 1, 2035	2,600	Acquired
Jan. 6, 2025	HSDT	Stock Option (Right to Buy)	Class A Common Stock (10,732)	$0.73	Jan. 5, 2035	10,732	Acquired
July 2, 2024	HSDT	Stock Option (Right to Buy)	Class A Common Stock (31,000)	$0.96	July 1, 2034	31,000	Acquired
May 24, 2023	HSDT	Stock Option (Right to Buy)	Class A Common Stock (284,865)	$0.16	May 23, 2033	284,865	Acquired
May 23, 2022	HSDT	Stock Option (Right to Buy)	Class A Common Stock (21,605)	$1.40	May 22, 2032	21,605	Acquired
May 25, 2021	HSDT	Stock Option (Right to Buy)	Class A Common Stock (3,063)	$13.30	May 24, 2031	3,063	Acquired
June 10, 2020	HSDT	Stock Option (Right to Buy)	Class A Common Stock	$0.55	June 9, 2030	61,218	Acquired
June 10, 2020	HSDT	Stock Option (Right to Buy)	Class A Common Stock (36,697)	$0.55	June 9, 2030	36,697	Acquired
Dec. 7, 2019	HSDT	Stock Option (Right to Buy)	Class A Common Stock (20,000)	$5.35	July 13, 2026	20,000	Acquired
Dec. 7, 2019	HSDT	Stock Option (Right to Buy)	Class A Common Stock (20,000)	$5.35	July 13, 2020	20,000	Disposed
Dec. 7, 2019	HSDT	Stock Option (Right to Buy)	Class A Common Stock (10,000)	$4.48	Dec. 31, 2025	10,000	Acquired
Dec. 7, 2019	HSDT	Stock Option (Right to Buy)	Class A Common Stock (10,000)	$4.48	Dec. 31, 2020	10,000	Disposed
March 28, 2019	HSDT	Stock Option (Right to Buy)	Class A Common Stock (18,990)	$6.76	March 28, 2029	18,990	Acquired
May 15, 2018	HSDT	Stock Option (Right to Buy)	Class A Common Stock (15,000)	—	May 15, 2028	15,000	Acquired
Dec. 22, 2017	HSDT	Warrant (Right to Buy)	Class A Common Stock (382,653)	$2.45	Dec. 22, 2020	382,653	Acquired
April 17, 2017	HSDT	Stock Option (Right to Buy)	Class A Common Stock (100,000)	—	April 17, 2027	100,000	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
Jan. 8, 2016	HSDT	Stock Option (Right to Buy)→ Class A Common Stock (50,000)	50,000	Direct