Steven Prelack

Insider

First SEC filing: April 9, 2013 · Latest: June 29, 2015

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

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 40 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

40 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 30, 2021	WHWK	A	12,334	$1.52	$18,748	24,485 Direct	+101.51%	Acquired	-78.9% (price as of 2026-08-20)
March 31, 2021	WHWK	A	12,151	$1.54	$18,713	12,151 Direct	—	Acquired	-79.1% (price as of 2026-08-20)
June 18, 2019	WHWK	A	21,400	—	—	21,400 Direct	—	Acquired	(price as of 2026-08-20)
June 20, 2018	WHWK	A	21,400	—	—	21,400 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 25, 2017	PVLA	A	20,000	—	—	20,000 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 15, 2016	GALT	A	41,500	—	—	41,500 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 16, 2016	PVLA	A	20,000	—	—	20,000 Direct	—	Acquired	(price as of 2026-08-20)
April 8, 2015	GALT	D	16,714	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 8, 2015	GALT	D	6,168	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 8, 2015	GALT	A	90,882	—	—	107,189 Direct	+557.32%	Acquired	(price as of 2026-08-20)
April 8, 2015	GALT	A	2,259	—	—	16,307 Direct	+16.08%	Acquired	(price as of 2026-08-20)
March 12, 2015	GALT	A	11,112	—	—	14,048 Direct	+378.47%	Acquired	(price as of 2026-08-20)
Nov. 18, 2014	GALT	A	6,269	—	—	6,269 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 18, 2014	GALT	A	6,168	—	—	6,168 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 18, 2014	GALT	D	84,283	—	—	2,936 Direct	-96.63%	Disposed	(price as of 2026-08-20)
April 11, 2014	GALT	S	6,000	$11.84	$71,040	87,219 Direct	-6.44%	Disposed	-69.8% (price as of 2026-08-20)
Jan. 31, 2014	GALT	M	6,269	—	—	10,445 Direct	-37.51%	Disposed	(price as of 2026-08-20)
Jan. 31, 2014	GALT	M	8,475	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 31, 2014	GALT	M	9,260	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 31, 2014	GALT	M	83,334	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 31, 2014	GALT	M	667	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Jan. 31, 2014	GALT	F	17,722	$13.71	$242,969	93,219 Direct	-15.97%	Disposed	-73.9% (price as of 2026-08-20)
Jan. 31, 2014	GALT	M	6,269	$3.59	$22,506	110,941 Direct	+5.99%	Acquired	-0.4% (price as of 2026-08-20)
Jan. 31, 2014	GALT	M	8,475	$7.08	$60,003	104,672 Direct	+8.81%	Acquired	-49.5% (price as of 2026-08-20)
Jan. 31, 2014	GALT	M	9,260	$6.48	$60,005	96,197 Direct	+10.65%	Acquired	-44.8% (price as of 2026-08-20)
Jan. 31, 2014	GALT	M	83,334	$1.20	$100,001	86,937 Direct	+2312.91%	Acquired	197.9% (price as of 2026-08-20)
Jan. 31, 2014	GALT	M	667	$0.72	$480	3,603 Direct	+22.72%	Acquired	396.5% (price as of 2026-08-20)
March 28, 2013	GALT	A	16,714	—	—	16,714 Direct	—	Acquired	(price as of 2026-08-20)
March 12, 2013	GALT	M	1,167	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 12, 2013	GALT	F	631	$4.22	$2,663	2,936 Direct	-17.69%	Disposed	-15.3% (price as of 2026-08-20)
March 12, 2013	GALT	M	1,167	$2.28	$2,661	3,567 Direct	+48.62%	Acquired	56.8% (price as of 2026-08-20)
June 28, 2011	GALT	A	50,848	—	—	50,848 Direct	—	Acquired	(price as of 2026-08-20)
March 24, 2011	GALT	A	55,556	—	—	55,556 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 25, 2009	GALT	A	500,000	—	—	500,000 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 8, 2009	GALT	A	4,000	—	—	4,000 Direct	-50.00%	Disposed	(price as of 2026-08-20)
March 13, 2008	GALT	A	7,000	—	—	7,000 Direct	—	Acquired	(price as of 2026-08-20)
March 8, 2007	GALT	A	5,000	—	—	5,500 Direct	+1000.00%	Acquired	(price as of 2026-08-20)
March 9, 2006	GALT	A	3,500	—	—	3,500 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 24, 2005	GALT	A	11,000	—	—	11,000 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 24, 2005	GALT	A	11,000	—	—	11,000 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 15, 2004	GALT	A	250	—	—	250 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.

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 18, 2019	WHWK	Stock Option (Right to Buy)	Common Stock (21,400)	$0.96	June 18, 2029	21,400	Acquired
June 20, 2018	WHWK	Stock Option (Right to Buy)	Common Stock (21,400)	$4.00	June 20, 2028	21,400	Acquired
Jan. 25, 2017	PVLA	Stock Option (right to buy)	Common Stock (20,000)	$2.01	Jan. 25, 2027	20,000	Acquired
Dec. 15, 2016	GALT	Stock option (right to buy)	Common stock (41,500)	$0.89	Dec. 15, 2026	41,500	Acquired
Feb. 16, 2016	PVLA	Stock Option (right to buy)	Common Stock (20,000)	$1.59	Feb. 16, 2026	20,000	Acquired
April 8, 2015	GALT	Stock Option (right to buy)	Common Stock (16,714)	$3.59	March 28, 2023	16,714	Disposed
April 8, 2015	GALT	Stock Option (right to buy)	Common Stock (6,168)	$7.08	June 28, 2021	6,168	Disposed
Nov. 18, 2014	GALT	Stock option (right to buy)	Common stock (6,269)	$3.59	March 28, 2023	6,269	Acquired
Nov. 18, 2014	GALT	Stock option (right to buy)	Common stock (6,168)	$7.08	June 28, 2021	6,168	Acquired
Jan. 31, 2014	GALT	Stock Option (right to buy)	Common Stock (6,269)	$3.59	March 28, 2023	6,269	Disposed
Jan. 31, 2014	GALT	Stock Option (right to buy)	Common Stock (8,475)	—	June 28, 2021	8,475	Disposed
Jan. 31, 2014	GALT	Stock Option (right to buy)	Common Stock (9,260)	—	March 24, 2016	9,260	Disposed
Jan. 31, 2014	GALT	Stock Option (right to buy)	Common Stock (83,334)	—	Feb. 25, 2014	83,334	Disposed
Jan. 31, 2014	GALT	Stock Option (right to buy)	Common Stock (667)	—	Feb. 8, 2014	667	Disposed
March 28, 2013	GALT	Stock Option (right to buy)	Common Stock (16,714)	$3.59	March 28, 2023	16,714	Acquired
March 12, 2013	GALT	Employee Stock Option (right to buy)	Common Stock	—	March 13, 2013	1,167	Disposed
June 28, 2011	GALT	Stock Option (Right to Buy)	Common Stock (50,848)	$1.18	June 28, 2021	50,848	Acquired
March 24, 2011	GALT	Stock Option (Right to Buy)	Common Stock (55,556)	$1.08	March 24, 2016	55,556	Acquired
Feb. 25, 2009	GALT	Stock Option (Right to Buy)	Common Stock (500,000)	$0.20	Feb. 25, 2014	500,000	Acquired
Feb. 8, 2009	GALT	Stock Option (right to buy)	Common Stock (4,000)	$0.12	Feb. 8, 2014	4,000	Disposed
March 13, 2008	GALT	Employee Stock Option (right to buy)	Common Stock (7,000)	$0.38	March 13, 2013	7,000	Acquired
March 8, 2007	GALT	Employee Stock Option (right to buy)	Common Stock (5,500)	$1.01	March 8, 2012	5,000	Acquired
March 9, 2006	GALT	Employee Stock Option (right to buy)	Common Stock (3,500)	$3.75	March 9, 2011	3,500	Acquired
Feb. 24, 2005	GALT	Employee Stock Option (right to buy)	Common Stock (11,000)	$2.70	Feb. 24, 2010	11,000	Acquired
Feb. 24, 2005	GALT	Employee Stock Option (right to buy)	Common Stock (11,000)	$2.70	Feb. 24, 2009	11,000	Acquired
Sept. 15, 2004	GALT	Employee Stock Option (right to buy)	Common Stock (250)	$3.86	Sept. 15, 2009	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
June 29, 2015	PVLA	Stock option (right to buy)→ Common Stock (30,000)	30,000	Direct