Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 41 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

41 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
July 1, 2021 PTN P 10,000 $0.61 $6,100 775,966 Direct +1.31% Acquired -98.8% (price as of 2026-10-05)
Aug. 5, 2019 PTN P 800 $0.78 $624 520,799 Direct +0.15% Acquired -99.0% (price as of 2026-10-05)
Dec. 4, 2015 PTN P 2,500 $0.66 $1,650 21,500 Direct +13.16% Acquired -98.9% (price as of 2026-10-05)
Nov. 19, 2015 PTN P 2,000 $0.65 $1,300 19,000 Direct +11.76% Acquired -98.8% (price as of 2026-10-05)
Dec. 24, 2012 PTN P 2,000 $0.65 $1,300 2,000 Direct · Acquired -98.8% (price as of 2026-10-05)

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
July 15, 2023 PTN Stock Option (Right to Buy) Common Stock (17,000) $1.83 June 4, 2034 17,000 Acquired
June 20, 2023 PTN Stock Option (Right to Buy) Common Stock (16,000) $2.19 June 20, 2033 16,000 Acquired
June 22, 2022 PTN Stock Option (Right to Buy) Common Stock (128,000) $0.29 June 22, 2032 128,000 Acquired
June 22, 2021 PTN Stock Option (Right to Buy) Common Stock (128,000) $0.55 June 22, 2031 128,000 Acquired
June 16, 2020 PTN Stock Option (Right to Buy) Common Stock (127,000) $0.58 June 16, 2030 127,000 Acquired
June 24, 2019 PTN Stock Option (right to buy) Common Stock (52,000) $1.34 June 24, 2029 52,000 Acquired
June 26, 2018 PTN Stock Option (right to buy) Common Stock (28,000) $1.00 June 26, 2028 28,000 Acquired
Dec. 12, 2017 PTN Stock Option (right to buy) Common Stock (30,000) $0.85 Dec. 12, 2027 30,000 Acquired
June 20, 2017 PTN Stock Option (right to buy) Common Stock (54,000) $0.37 June 20, 2027 54,000 Acquired
June 9, 2016 PTN Stock Option (right to buy) Common Stock (37,500) $0.50 June 9, 2026 37,500 Acquired
June 11, 2015 PTN restricted share units common stock (20,000) · June 11, 2016 20,000 Acquired
June 11, 2015 PTN stock option (right to buy) common stock (20,000) $1.08 June 11, 2025 20,000 Acquired
June 25, 2014 PTN restricted share units common stock (15,000) · June 25, 2015 15,000 Acquired
June 25, 2014 PTN stock option (right to buy) common stock (15,000) $1.02 June 25, 2024 15,000 Acquired
June 27, 2013 PTN stock option (right to buy) common stock (30,000) $0.62 June 27, 2023 30,000 Acquired
July 17, 2012 PTN stock option (right to buy) common stock (15,000) $0.72 July 17, 2022 15,000 Acquired
June 22, 2011 PTN stock option (right to buy) common stock (12,500) $0.86 June 22, 2021 12,500 Acquired
June 22, 2011 PTN stock option (right to buy) common stock (20,000) $0.86 June 22, 2021 20,000 Acquired
June 22, 2011 PTN stock option (right to buy) common stock (40,000) $0.86 June 22, 2021 40,000 Acquired
July 21, 2010 PTN stock option (right to buy) common stock (40,000) $0.17 July 21, 2020 40,000 Acquired
July 1, 2009 PTN stock option (right to buy) common stock (40,000) $0.28 July 1, 2019 40,000 Acquired
July 1, 2008 PTN stock option (right to buy) common stock (40,000) $0.18 July 1, 2018 40,000 Acquired
July 1, 2008 PTN stock option (right to buy) common stock (150,000) $0.18 July 1, 2018 150,000 Acquired
July 1, 2007 PTN stock option (right to buy) common stock (20,000) $1.98 July 1, 2017 20,000 Acquired
July 1, 2006 PTN stock option (right to buy) common stock (20,000) $2.00 July 1, 2016 20,000 Acquired
Aug. 30, 2005 PTN stock option (right to buy) common stock (16,667) $1.94 Aug. 30, 2015 16,667 Acquired
Aug. 30, 2005 PTN stock option (right to buy) common stock (20,000) $1.94 Aug. 30, 2015 20,000 Acquired

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