Carl Spana

CIK 1042011 · View on SEC EDGAR ↗

Insider

First SEC filing: Jan. 2, 2026 · Latest: Jan. 2, 2026

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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.
Compensation Executive pay disclosed in company proxy statements.

Insider at

PTN buying June 13, 2025

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 86 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

86 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 15, 2026	PTN	F	142	$14.34	$2,036	64,899 Direct	-0.22%	Disposed	-25.5% (price as of 2026-08-20)
July 15, 2026	PTN	F	119	$11.72	$1,395	65,041 Direct	-0.18%	Disposed	-8.8% (price as of 2026-08-20)
July 15, 2026	PTN	F	33	$11.77	$388	65,160 Direct	-0.05%	Disposed	-9.2% (price as of 2026-08-20)
Dec. 30, 2025	PTN	F	40	$21.38	$855	64,377	—	—	-50.0% (price as of 2026-08-20)
Dec. 9, 2025	PTN	A	110	—	—	64,698	—	—	(price as of 2026-08-20)
Nov. 14, 2025	PTN	F	51	$8.00	$408	33,113	—	—	33.6% (price as of 2026-08-20)
June 13, 2025	PTN	P	1,500	$150000.00	$225,000,000	1,672,940	—	—	-100.0% (price as of 2026-08-20)
July 30, 2024	PTN	F	2,331	$1.82	$4,242	261,459	—	—	-88.3% (price as of 2026-08-20)
July 15, 2024	PTN	A	79,000	—	—	364,887	—	—	(price as of 2026-08-20)
Aug. 15, 2023	PTN	F	2,331	$2.19	$5,105	366,303	—	—	-90.2% (price as of 2026-08-20)
June 20, 2023	PTN	A	66,000	—	—	378,568	—	—	(price as of 2026-08-20)
Dec. 27, 2022	PTN	P	5,000	$2.23	$11,150	293,604	—	—	-90.4% (price as of 2026-08-20)
Dec. 27, 2022	PTN	A	5,000	$2.23	$11,150	293,604	—	—	-90.4% (price as of 2026-08-20)
Dec. 16, 2022	PTN	J	11,000	—	—	283,604	—	—	(price as of 2026-08-20)
Oct. 25, 2022	PTN	F	2,337	$7.00	$16,359	419,524	—	—	-96.9% (price as of 2026-08-20)
June 24, 2022	PTN	A	43,528	—	—	10,526,458	—	—	(price as of 2026-08-20)
June 22, 2022	PTN	A	455,000	—	—	10,482,930	—	—	(price as of 2026-08-20)
Aug. 13, 2021	PTN	F	61,628	$0.56	$34,512	8,552,677	—	—	-98.5% (price as of 2026-08-20)
June 30, 2021	PTN	P	64,400	$0.62	$39,928	8,705,051	—	—	-98.6% (price as of 2026-08-20)
June 30, 2021	PTN	A	64,400	$0.62	$39,928	8,705,051	—	—	-98.6% (price as of 2026-08-20)
June 22, 2021	PTN	A	704,500	—	—	8,630,051	—	—	(price as of 2026-08-20)
Aug. 31, 2020	PTN	F	17,176	$0.55	$9,447	7,187,368	—	—	-98.4% (price as of 2026-08-20)
June 24, 2020	PTN	A	323,250	—	—	7,147,252	—	—	(price as of 2026-08-20)
June 16, 2020	PTN	A	323,250	—	—	7,097,102	—	—	(price as of 2026-08-20)
Aug. 1, 2019	PTN	P	10,000	$0.86	$8,599	5,993,852	—	—	-99.0% (price as of 2026-08-20)
June 24, 2019	PTN	A	312,500	—	—	5,891,352	—	—	(price as of 2026-08-20)
Nov. 16, 2018	PTN	P	20,000	$0.79	$15,766	4,348,102	—	—	-98.9% (price as of 2026-08-20)
June 26, 2018	PTN	A	187,500	—	—	4,130,352	—	—	(price as of 2026-08-20)
Dec. 12, 2017	PTN	A	625,000	—	—	3,411,102	—	—	(price as of 2026-08-20)
June 20, 2017	PTN	A	595,000	—	—	2,917,852	—	—	(price as of 2026-08-20)
June 12, 2017	PTN	F	38,824	$0.36	$13,977	2,322,852 Direct	-1.64%	Disposed	-97.6% (price as of 2026-08-20)
June 12, 2017	PTN	M	105,000	—	—	2,361,676 Direct	+4.65%	Acquired	(price as of 2026-08-20)
Feb. 2, 2017	PTN	A	325,000	—	—	2,114,829 Direct	+18.16%	Acquired	(price as of 2026-08-20)
Sept. 7, 2016	PTN	A	432,000	—	—	432,000 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 7, 2016	PTN	A	290,000	—	—	2,011,079 Direct	+16.85%	Acquired	(price as of 2026-08-20)
June 27, 2016	PTN	F	32,594	$0.45	$14,667	1,725,426 Direct	-1.85%	Disposed	-98.1% (price as of 2026-08-20)
June 27, 2016	PTN	M	87,500	—	—	1,758,020 Direct	+5.24%	Acquired	(price as of 2026-08-20)
June 13, 2016	PTN	F	38,819	$0.49	$19,021	1,520,520 Direct	-2.49%	Disposed	-98.3% (price as of 2026-08-20)
June 13, 2016	PTN	M	105,000	—	—	1,559,339 Direct	+7.22%	Acquired	(price as of 2026-08-20)
Dec. 8, 2015	PTN	A	325,000	—	—	1,623,089 Direct	+25.04%	Acquired	(price as of 2026-08-20)
June 27, 2015	PTN	F	40,975	$0.91	$37,287	1,313,889 Direct	-3.02%	Disposed	-99.1% (price as of 2026-08-20)
June 27, 2015	PTN	M	110,000	—	—	1,354,864 Direct	+8.84%	Acquired	(price as of 2026-08-20)
June 25, 2015	PTN	F	32,349	$0.93	$30,085	1,354,864 Direct	-2.33%	Disposed	-99.1% (price as of 2026-08-20)
June 25, 2015	PTN	M	87,500	—	—	1,387,213 Direct	+6.73%	Acquired	(price as of 2026-08-20)
June 11, 2015	PTN	A	210,000	—	—	210,000 Direct	—	Acquired	(price as of 2026-08-20)
June 11, 2015	PTN	A	300,000	—	—	300,000 Direct	—	Acquired	(price as of 2026-08-20)
July 18, 2014	PTN	F	20,953	$1.02	$21,372	430,163 Direct	-4.64%	Disposed	-99.2% (price as of 2026-08-20)
July 18, 2014	PTN	M	56,250	—	—	451,116 Direct	+14.25%	Acquired	(price as of 2026-08-20)
July 2, 2014	PTN	M	110,000	—	—	435,841 Direct	+33.76%	Acquired	(price as of 2026-08-20)
July 2, 2014	PTN	F	40,975	$1.00	$40,975	394,866 Direct	-9.40%	Disposed	-99.1% (price as of 2026-08-20)
June 25, 2014	PTN	A	175,000	—	—	175,000 Direct	—	Acquired	(price as of 2026-08-20)
June 25, 2014	PTN	A	175,000	—	—	175,000 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 4, 2013	PTN	F	19,812	$0.69	$13,670	325,841 Direct	-5.73%	Disposed	-98.8% (price as of 2026-08-20)
Sept. 4, 2013	PTN	M	56,250	—	—	345,653 Direct	+19.44%	Acquired	(price as of 2026-08-20)
June 27, 2013	PTN	A	220,000	—	—	220,000 Direct	—	Acquired	(price as of 2026-08-20)
June 27, 2013	PTN	A	275,000	—	—	275,000 Direct	—	Acquired	(price as of 2026-08-20)
June 22, 2013	PTN	M	125,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 22, 2013	PTN	F	42,938	$0.65	$27,910	289,403 Direct	-12.92%	Disposed	-98.7% (price as of 2026-08-20)
June 22, 2013	PTN	M	125,000	—	—	332,341 Direct	+60.29%	Acquired	(price as of 2026-08-20)
Dec. 31, 2012	PTN	P	10,000	$0.57	$5,700	207,341 Direct	+5.07%	Acquired	-98.5% (price as of 2026-08-20)
July 17, 2012	PTN	A	112,500	—	—	112,500 Direct	—	Acquired	(price as of 2026-08-20)
July 17, 2012	PTN	A	150,000	—	—	150,000 Direct	—	Acquired	(price as of 2026-08-20)
July 17, 2012	PTN	A	110,000	—	—	110,000 Direct	—	Acquired	(price as of 2026-08-20)
July 17, 2012	PTN	A	135,000	—	—	135,000 Direct	—	Acquired	(price as of 2026-08-20)
July 12, 2012	PTN	F	40,400	$0.45	$18,180	197,341 Direct	-16.99%	Disposed	-98.1% (price as of 2026-08-20)
July 12, 2012	PTN	M	125,000	—	—	237,741 Direct	+110.87%	Acquired	(price as of 2026-08-20)
June 22, 2011	PTN	A	250,000	—	—	250,000 Direct	—	Acquired	(price as of 2026-08-20)
June 22, 2011	PTN	A	300,000	—	—	300,000 Direct	—	Acquired	(price as of 2026-08-20)
March 15, 2011	PTN	M	12,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 15, 2011	PTN	F	4,565	$0.92	$4,200	112,741 Direct	-3.89%	Disposed	-99.1% (price as of 2026-08-20)
March 15, 2011	PTN	M	12,500	—	—	117,306 Direct	+11.93%	Acquired	(price as of 2026-08-20)
March 1, 2011	PTN	P	45,652	—	—	45,652 Direct	—	Acquired	(price as of 2026-08-20)
March 1, 2011	PTN	P	4,348	—	—	4,348 Direct	—	Acquired	(price as of 2026-08-20)
March 1, 2011	PTN	P	50,000	—	—	104,806 Direct	+91.23%	Acquired	(price as of 2026-08-20)
Sept. 15, 2010	PTN	M	12,500	—	—	12,500 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Sept. 15, 2010	PTN	F	4,040	$1.88	$7,595	54,806 Direct	-6.87%	Disposed	-100.0% (price as of 2026-08-20)
Sept. 15, 2010	PTN	M	12,500	—	—	58,846 Direct	+26.97%	Acquired	(price as of 2026-08-20)
July 21, 2010	PTN	A	250,000	—	—	250,000 Direct	—	Acquired	(price as of 2026-08-20)
March 26, 2010	PTN	M	375,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 26, 2010	PTN	F	123,407	$0.26	$32,086	463,466 Direct	-21.03%	Disposed	-99.7% (price as of 2026-08-20)
March 26, 2010	PTN	M	375,000	—	—	586,873 Direct	+176.99%	Acquired	(price as of 2026-08-20)
Dec. 31, 2009	PTN	M	250,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 31, 2009	PTN	F	80,800	$0.37	$29,896	211,873 Direct	-27.61%	Disposed	-99.8% (price as of 2026-08-20)
Dec. 31, 2009	PTN	M	250,000	—	—	292,673 Direct	+585.85%	Acquired	(price as of 2026-08-20)
July 1, 2009	PTN	A	250,000	—	—	250,000 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 10, 2008	PTN	A	250,000	—	—	250,000 Direct	—	Acquired	(price as of 2026-08-20)
July 1, 2008	PTN	A	250,000	—	—	250,000 Direct	—	Acquired	(price as of 2026-08-20)
March 26, 2008	PTN	P	46,875	—	—	46,875 Direct	—	Acquired	(price as of 2026-08-20)
March 26, 2008	PTN	A	46,875	—	—	46,875 Direct	—	Acquired	(price as of 2026-08-20)
March 26, 2008	PTN	A	281,250	—	—	281,250 Direct	—	Acquired	(price as of 2026-08-20)
March 26, 2008	PTN	J	375,000	—	—	375,000 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 6, 2006	PTN	A	375,000	—	—	375,000 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 6, 2006	PTN	A	125,000	—	—	125,000 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 10, 2005	PTN	P	5,000	$2.03	$10,150	42,673 Direct	+13.27%	Acquired	-100.0% (price as of 2026-08-20)
July 1, 2005	PTN	A	83,000	—	—	158,000 Direct	+110.67%	Acquired	(price as of 2026-08-20)
July 1, 2005	PTN	A	75,000	—	—	75,000 Direct	—	Acquired	(price as of 2026-08-20)
July 1, 2005	PTN	J	200,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 25, 2005	PTN	P	3,800	$2.08	$7,904	37,673 Direct	+11.22%	Acquired	-100.0% (price as of 2026-08-20)
May 25, 2005	PTN	P	1,200	$2.05	$2,460	33,873 Direct	+3.67%	Acquired	-100.0% (price as of 2026-08-20)
Nov. 11, 2004	PTN	P	5,300	$2.60	$13,780	32,673 Direct	+19.36%	Acquired	-100.0% (price as of 2026-08-20)

Showing latest 100 of 103 transactions

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
Sept. 7, 2016	PTN	Stock Option (right to acquire)	Common (432,000)	$0.68	Sept. 7, 2026	432,000	Acquired
June 11, 2015	PTN	restricted share units	common stock (210,000)	—	June 11, 2017	210,000	Acquired
June 11, 2015	PTN	Stock option (right to buy)	common stock (300,000)	$1.08	June 11, 2025	300,000	Acquired
June 25, 2014	PTN	restricted share units	common stock (175,000)	—	June 25, 2016	175,000	Acquired
June 25, 2014	PTN	stock option (right to buy)	common stock (175,000)	$1.02	June 25, 2024	175,000	Acquired
June 27, 2013	PTN	restricted stock units	common stock (220,000)	—	June 27, 2015	220,000	Acquired
June 27, 2013	PTN	stock option (right to buy)	common stock (275,000)	$0.62	June 27, 2023	275,000	Acquired
June 22, 2013	PTN	restricted stock units	common stock (125,000)	—	June 22, 2013	125,000	Disposed
July 17, 2012	PTN	restricted stock units	common stock (112,500)	—	July 17, 2014	112,500	Acquired
July 17, 2012	PTN	stock option (right to buy)	common stock (150,000)	$0.72	July 17, 2022	150,000	Acquired
July 17, 2012	PTN	restricted stock units	common stock (110,000)	—	July 17, 2014	110,000	Acquired
July 17, 2012	PTN	stock option (right to buy)	common stock (135,000)	$0.72	July 17, 2022	135,000	Acquired
June 22, 2011	PTN	restricted stock units	common stock (250,000)	—	June 22, 2013	250,000	Acquired
June 22, 2011	PTN	stock option (right to buy)	common stock (300,000)	$1.00	June 22, 2021	300,000	Acquired
March 15, 2011	PTN	restricted stock unit	common stock (12,500)	—	March 15, 2011	12,500	Disposed
March 1, 2011	PTN	Series B common stock purchase warrant	common stock (45,652)	$1.00	March 2, 2017	45,652	Acquired
March 1, 2011	PTN	Series A common stock purchase warrant	common stock (4,348)	$1.00	March 1, 2016	4,348	Acquired
Sept. 15, 2010	PTN	restricted stock units	common stock (12,500)	—	March 15, 2011	12,500	Disposed
July 21, 2010	PTN	restricted stock unit	common stock (250,000)	$0.00	March 15, 2011	250,000	Acquired
March 26, 2010	PTN	restricted stock unit	common stock (375,000)	—	March 26, 2010	375,000	Disposed
Dec. 31, 2009	PTN	restricted stock unit	common stock (250,000)	—	Dec. 31, 2009	250,000	Disposed
July 1, 2009	PTN	stock option (right to buy)	common stock (250,000)	$0.28	July 1, 2019	250,000	Acquired
Dec. 10, 2008	PTN	restricted stock unit	common stock (250,000)	$0.00	Dec. 31, 2009	250,000	Acquired
July 1, 2008	PTN	stock option (right to buy)	common stock (250,000)	$0.18	July 1, 2018	250,000	Acquired
March 26, 2008	PTN	stock option (right to buy)	common stock (46,875)	$0.66	March 26, 2018	46,875	Acquired
March 26, 2008	PTN	stock option (right to buy)	common stock (46,875)	$0.50	March 26, 2018	46,875	Acquired
March 26, 2008	PTN	stock option (right to buy)	common stock (281,250)	$0.28	March 26, 2018	281,250	Acquired
March 26, 2008	PTN	restricted stock units	common stock (375,000)	$0.00	Oct. 6, 2016	375,000	Acquired
Oct. 6, 2006	PTN	restricted stock unit	common stock (375,000)	$0.00	Oct. 6, 2010	375,000	Acquired
Oct. 6, 2006	PTN	stock option (right to buy)	common stock (125,000)	$2.49	Oct. 6, 2016	125,000	Acquired
July 1, 2005	PTN	stock option (right to buy)	common stock (83,000)	$1.75	July 1, 2015	83,000	Acquired
July 1, 2005	PTN	stock option (right to buy)	common stock (75,000)	$3.75	July 1, 2015	75,000	Acquired
July 1, 2005	PTN	stock option (right to buy)	common stock (200,000)	$4.21	—	200,000	Disposed
July 1, 2004	PTN	stock option (right to buy)	common stock (200,000)	$4.21	July 1, 2014	200,000	Acquired

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

Compensation (DEF 14A)

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

PTN

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2025	$721,000	—	—	—	—	—	$17,500	$738,500
2024	$700,000	—	$195,400	$178,700	$357,000	—	$17,250	$1,448,350
2023	$700,000	—	$170,500	$154,300	$2,625	—	$16,500	$1,303,800

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