Sanford Hillsberg

Insider

First SEC filing: Sept. 11, 2013 · Latest: Sept. 11, 2013

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 + 50 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

50 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Oct. 10, 2017	SLS	A	20,997	$0.38	$7,979	56,950 Direct	+58.40%	Acquired	-97.6% (price as of 2026-08-21)
July 6, 2017	SLS	A	13,390	$0.59	$7,900	35,953 Direct	+59.34%	Acquired	-98.5% (price as of 2026-08-21)
June 8, 2017	SLS	A	5,000	—	—	5,000 Direct	—	Acquired	(price as of 2026-08-21)
June 1, 2017	IOVA	A	35,000	—	—	35,000 Direct	—	Acquired	(price as of 2026-08-21)
April 10, 2017	SLS	A	13,394	$0.59	$7,902	22,563 Direct	+146.08%	Acquired	-98.5% (price as of 2026-08-21)
Jan. 20, 2017	SLS	A	3,998	$1.98	$7,916	9,169 Direct	+77.32%	Acquired	-99.5% (price as of 2026-08-21)
Aug. 25, 2016	IOVA	S 10b5-1	20,500	$8.71	$178,555	100,000 Indirect	-17.01%	Disposed	3.2% (price as of 2026-08-21)
Aug. 24, 2016	IOVA	S 10b5-1	33,500	$9.10	$304,850	120,500 Indirect	-21.75%	Disposed	-1.3% (price as of 2026-08-21)
Aug. 22, 2016	IOVA	S	54,000	$9.11	$491,940	100,000 Indirect	-35.06%	Disposed	-1.4% (price as of 2026-08-21)
Aug. 16, 2016	IOVA	A	35,000	—	—	35,000 Direct	—	Acquired	(price as of 2026-08-21)
July 14, 2016	SLS	A	100,000	—	—	100,000 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 8, 2015	IOVA	S	16,500	$7.13	$117,645	154,000 Indirect	-9.68%	Disposed	26.0% (price as of 2026-08-21)
Sept. 4, 2015	IOVA	S	16,000	$6.84	$109,440	170,500 Indirect	-8.58%	Disposed	31.4% (price as of 2026-08-21)
Aug. 3, 2015	IOVA	S	32,500	$8.15	$264,875	186,500 Indirect	-14.84%	Disposed	10.2% (price as of 2026-08-21)
June 19, 2015	SLS	A	100,000	—	—	100,000 Direct	—	Acquired	(price as of 2026-08-21)
June 12, 2015	IOVA	A	35,000	—	—	35,000 Direct	—	Acquired	(price as of 2026-08-21)
May 6, 2015	IOVA	S	50,000	$10.00	$500,000	219,000 Indirect	-18.59%	Disposed	-10.2% (price as of 2026-08-21)
Jan. 28, 2015	IOVA	J	25,000	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-21)
Jan. 28, 2015	IOVA	J	25,000	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 16, 2014	IOVA	A	25,000	—	—	25,000 Indirect	—	Acquired	(price as of 2026-08-21)
Dec. 16, 2014	IOVA	A	25,000	—	—	25,000 Indirect	—	Acquired	(price as of 2026-08-21)
Dec. 5, 2014	IOVA	A	50,000	—	—	50,000 Direct	—	Acquired	(price as of 2026-08-21)
Jan. 30, 2014	SLS	M	200,000	$1.18	$236,000	217,974 Direct	+1112.72%	Acquired	-100.0% (price as of 2026-08-21)
Jan. 30, 2014	SLS	M	50,000	$1.71	$85,500	267,974 Direct	+22.94%	Acquired	-100.0% (price as of 2026-08-21)
Jan. 30, 2014	SLS	S	250,000	$5.41	$1,352,500	17,974 Direct	-93.29%	Disposed	-100.0% (price as of 2026-08-21)
Jan. 30, 2014	SLS	G	15,000	—	—	95,447 Indirect	-13.58%	Disposed	(price as of 2026-08-21)
Jan. 30, 2014	SLS	M	100,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Jan. 30, 2014	SLS	M	100,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Jan. 30, 2014	SLS	H	50,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Jan. 17, 2014	SLS	S	200,000	$6.92	$1,384,000	110,447 Indirect	-64.42%	Disposed	-100.0% (price as of 2026-08-21)
Jan. 14, 2014	SLS	M	200,000	$0.85	$170,000	334,873 Indirect	+148.29%	Acquired	-99.9% (price as of 2026-08-21)
Jan. 14, 2014	SLS	F	24,426	$6.96	$170,005	310,447 Indirect	-7.29%	Disposed	-100.0% (price as of 2026-08-21)
Jan. 14, 2014	SLS	M	200,000	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 30, 2013	IOVA	A	67,500	—	—	269,000 Indirect	+33.50%	Acquired	(price as of 2026-08-21)
Dec. 12, 2013	SLS	M	50,000	$0.72	$36,000	143,375 Indirect	+53.55%	Acquired	-99.9% (price as of 2026-08-21)
Dec. 12, 2013	SLS	F	8,592	$4.19	$36,000	134,873 Indirect	-5.99%	Disposed	-100.0% (price as of 2026-08-21)
Dec. 12, 2013	SLS	M	50,000	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-21)
Nov. 26, 2013	SLS	A	200,000	—	—	200,000 Direct	—	Acquired	(price as of 2026-08-21)
Nov. 18, 2013	IOVA	A	40,000	—	—	40,000 Indirect	—	Acquired	(price as of 2026-08-21)
Nov. 12, 2013	SLS	G	37,001	—	—	93,375 Indirect	-28.38%	Disposed	(price as of 2026-08-21)
Nov. 5, 2013	IOVA	A	67,500	—	—	201,500 Indirect	+50.37%	Acquired	(price as of 2026-08-21)
Oct. 11, 2013	SLS	A	2,630	—	—	17,974 Direct	+17.14%	Acquired	(price as of 2026-08-21)
June 4, 2013	SLS	A	9,344	—	—	145,720 Direct	+6.85%	Acquired	(price as of 2026-08-21)
June 4, 2013	SLS	A	9,327	—	—	145,703 Direct	+6.84%	Acquired	(price as of 2026-08-21)
Jan. 29, 2013	SLS	A	50,000	—	—	50,000 Direct	—	Acquired	(price as of 2026-08-21)
Nov. 2, 2012	SLS	G	20,000	—	—	136,376 Direct	-12.79%	Disposed	(price as of 2026-08-21)
June 15, 2012	SLS	A	31,966	—	—	156,376 Direct	+25.69%	Acquired	(price as of 2026-08-21)
Jan. 12, 2012	SLS	A	50,000	—	—	50,000 Direct	—	Acquired	(price as of 2026-08-21)
Sept. 27, 2011	SLS	A	200,000	—	—	200,000 Direct	—	Acquired	(price as of 2026-08-21)
April 13, 2011	SLS	A	120,838	—	—	126,838 Direct	+2013.97%	Acquired	(price as of 2026-08-21)
April 13, 2011	SLS	A	135,159	—	—	141,159 Direct	+2252.65%	Acquired	(price as of 2026-08-21)
March 25, 2011	SLS	A	100,000	—	—	100,000 Direct	—	Acquired	(price as of 2026-08-21)
March 25, 2011	SLS	A	100,000	—	—	100,000 Direct	—	Acquired	(price as of 2026-08-21)
Jan. 13, 2011	SLS	A	50,000	—	—	50,000 Direct	—	Acquired	(price as of 2026-08-21)
March 26, 2010	SLS	S	25,000	$5.66	$141,500	6,000 Direct	-80.65%	Disposed	-100.0% (price as of 2026-08-21)
Jan. 14, 2010	SLS	A	50,000	—	—	50,000 Direct	—	Acquired	(price as of 2026-08-21)
Oct. 16, 2009	SLS	A	25,000	—	—	31,000 Direct	+416.67%	Acquired	(price as of 2026-08-21)
Feb. 9, 2009	SLS	G	4,000	—	—	6,000 Direct	-40.00%	Disposed	(price as of 2026-08-21)
Jan. 15, 2009	SLS	A	50,000	—	—	150,000 Direct	+50.00%	Acquired	(price as of 2026-08-21)
April 18, 2008	SLS	A	25,000	—	—	25,000 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.

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 8, 2017	SLS	Stock Option (right to buy) [F3]	Common Stock (5,000)	$0.55	June 8, 2027	5,000	Acquired
June 1, 2017	IOVA	Stock Option (right to buy)	Common Stock (35,000)	$5.45	May 31, 2027	35,000	Acquired
Aug. 16, 2016	IOVA	Stock Option (right to buy)	Common Stock (35,000)	$9.10	Aug. 15, 2026	35,000	Acquired
July 14, 2016	SLS	Stock Option (right to buy) [F1]	Common Stock (100,000)	$0.41	July 14, 2026	100,000	Acquired
June 19, 2015	SLS	Stock Option (right to buy)	Common Stock (100,000)	$1.77	June 19, 2025	100,000	Acquired
June 12, 2015	IOVA	Stock Option (right to buy)	Common Stock (35,000)	$11.05	June 11, 2025	35,000	Acquired
Jan. 28, 2015	IOVA	Warrant	Common Stock	$2.50	Nov. 5, 2018	25,000	Disposed
Dec. 16, 2014	IOVA	Warrant	Common Stock	$2.50	Nov. 5, 2018	25,000	Acquired
Dec. 5, 2014	IOVA	Stock Option (right to buy)	Common Stock (50,000)	$6.25	Dec. 4, 2024	50,000	Acquired
Jan. 30, 2014	SLS	Stock Option (right to buy)	Common Stock (100,000)	$1.18	March 25, 2021	100,000	Disposed
Jan. 30, 2014	SLS	Stock Option (right to buy)	Common Stock (100,000)	$1.18	March 25, 2021	100,000	Disposed
Jan. 30, 2014	SLS	Stock Option (right to buy)	Common Stock (50,000)	$1.71	Jan. 29, 2023	50,000	Disposed
Jan. 14, 2014	SLS	Stock Option	Common Stock (200,000)	$0.85	Sept. 27, 2021	200,000	Disposed
Dec. 12, 2013	SLS	Stock Option	Common Stock (50,000)	$0.72	Jan. 12, 2022	50,000	Disposed
Nov. 26, 2013	SLS	Stock Option (right to buy) [F1]	Common Stock (200,000)	$3.88	Nov. 26, 2023	200,000	Acquired
Nov. 18, 2013	IOVA	Stock Option (right to buy)	Common Stock (40,000)	$5.65	Nov. 17, 2023	40,000	Acquired
Jan. 29, 2013	SLS	Stock Option (right to buy) [F1]	Common Stock (50,000)	$1.71	Jan. 29, 2023	50,000	Acquired
Jan. 12, 2012	SLS	Stock Option (right to buy) [F1]	Common Stock (50,000)	$0.72	Jan. 12, 2022	50,000	Acquired
Sept. 27, 2011	SLS	Stock Option (right to buy) [F1]	Common Stock (200,000)	$0.85	Sept. 27, 2021	200,000	Acquired
March 25, 2011	SLS	Stock Option [F1]	Common Stock (100,000)	—	March 24, 2021	100,000	Acquired
March 25, 2011	SLS	Stock Option [F1]	Common Stock (100,000)	—	March 24, 2021	100,000	Acquired
Jan. 13, 2011	SLS	Stock Option [F1]	Common Stock (50,000)	—	Jan. 13, 2021	50,000	Acquired
Jan. 14, 2010	SLS	Stock Option [F1]	Common Stock (50,000)	—	Jan. 14, 2020	50,000	Acquired
Jan. 15, 2009	SLS	Stock Option [F1]	Common Stock (50,000)	—	Jan. 15, 2019	50,000	Acquired
April 18, 2008	SLS	Non-Qualified Stock Option [F1]	Common Stock (25,000)	$7.50	April 18, 2018	25,000	Acquired

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

Initial ownership (Form 3) 5 holdings

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

Date	Ticker	Security	Shares	Ownership
Sept. 11, 2013	IOVA	Common Stock	13,400,000	Indirect
Sept. 11, 2013	IOVA	Market Cap Earn-Out [F2]→ Common Stock	—	Indirect
Feb. 14, 2008	SLS	Common Stock	10,000	Direct
Feb. 14, 2008	SLS	Non-Qualified Stock Option (right to buy) [F1]→ Common Stock (50,000)	50,000	Direct
Feb. 14, 2008	SLS	Non-Qualified Stock Option (right to buy) [F1]→ Common Stock (25,000)	25,000	Direct