T. Le Ngocdiep MD, PhD

Insider

First SEC filing: Oct. 2, 2018 · Latest: Oct. 2, 2018

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 5 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.

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Sept. 24, 2018	VSTM	A	70,000	—	—	70,000 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 24, 2018	VSTM	A	5,000	—	—	5,000 Direct	—	Acquired	(price as of 2026-08-21)
April 6, 2018	VSTM	A	2,500	—	—	2,500 Direct	—	Acquired	(price as of 2026-08-21)
Jan. 5, 2018	VSTM	A	12,500	—	—	12,500 Direct	—	Acquired	(price as of 2026-08-21)
Oct. 9, 2017	VSTM	A	300,000	—	—	300,000 Direct	—	Acquired	(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.

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

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Sept. 24, 2018	VSTM	Stock Option (Right to Buy)	Common Stock (70,000)	$4.63	Oct. 9, 2027	70,000	Acquired
Sept. 24, 2018	VSTM	Stock Option (Right to Buy)	Common Stock (5,000)	$2.97	Jan. 5, 2028	5,000	Acquired
April 6, 2018	VSTM	Stock Option (Right to Buy)	Common Stock (2,500)	$2.97	Jan. 5, 2028	2,500	Acquired
Jan. 5, 2018	VSTM	Stock Option (Right to Buy)	Common Stock (12,500)	$2.97	Jan. 5, 2028	12,500	Acquired
Oct. 9, 2017	VSTM	Stock Option (Right to Buy)	Common Stock (300,000)	$4.63	Oct. 9, 2027	300,000	Acquired

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