Michael Schmertzler

CIK 1288952 · View on SEC EDGAR ↗

Insider Activist

First SEC filing: May 22, 2009 · Latest: May 29, 2026

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 71 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

71 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Jan. 8, 2024 PTCT S 10b5-1 1,500 $27.81 $41,715 115,266 Direct -1.28% Disposed 153.9% (price as of 2026-08-21)
June 7, 2023 PTCT S 10b5-1 1,000 $44.86 $44,860 116,766 Direct -0.85% Disposed 57.4% (price as of 2026-08-21)
March 16, 2020 PTCT P 10,000 $32.48 $324,800 100,066 Direct +11.10% Acquired 117.4% (price as of 2026-08-21)
Jan. 25, 2019 PTCT P 66,225 $30.20 $1,999,995 1,386,594 Indirect +5.02% Acquired 133.8% (price as of 2026-08-21)
Feb. 19, 2014 PTCT P 23,000 $24.50 $563,500 1,320,369 Indirect +1.77% Acquired 188.2% (price as of 2026-08-21)
June 25, 2013 PTCT P 533,333 $15.00 $7,999,995 1,297,369 Indirect +69.80% Acquired 370.7% (price as of 2026-08-21)
May 15, 2013 PTCT P 60,000 $10.85 $651,000 60,000 Direct -50.00% Disposed 550.8% (price as of 2026-08-21)
March 7, 2013 PTCT S 172 $0.08 $14 25,578 Indirect -0.67% Disposed 88162.5% (price as of 2026-08-21)
March 7, 2013 PTCT S 44 — — 188,926 Indirect -0.02% Disposed (price as of 2026-08-21)
March 7, 2013 PTCT P 103,819 $12.00 $1,245,828 103,819 Indirect — Acquired 488.4% (price as of 2026-08-21)
March 7, 2013 PTCT S 372 $0.08 $30 55,356 Indirect -0.67% Disposed 88162.5% (price as of 2026-08-21)
March 7, 2013 PTCT S 96 — — 408,873 Indirect -0.02% Disposed (price as of 2026-08-21)
March 7, 2013 PTCT P 165,464 $12.00 $1,985,568 165,464 Indirect — Acquired 488.4% (price as of 2026-08-21)
Feb. 15, 2013 PTCT P None — — — Indirect — Acquired (price as of 2026-08-21)
Feb. 15, 2013 PTCT P None — — — Indirect — Acquired (price as of 2026-08-21)
Jan. 29, 2013 PTCT P 206,003 $0.01 $2,060 206,003 Indirect — Acquired 706000.0% (price as of 2026-08-21)
Jan. 29, 2013 PTCT P 52,736 $0.01 $527 52,736 Indirect — Acquired 706000.0% (price as of 2026-08-21)
Jan. 29, 2013 PTCT P None — — — Indirect — Acquired (price as of 2026-08-21)
Jan. 29, 2013 PTCT P 445,828 $0.01 $4,458 445,828 Indirect — Acquired 706000.0% (price as of 2026-08-21)
Jan. 29, 2013 PTCT P 114,131 $0.01 $1,141 114,131 Indirect — Acquired 706000.0% (price as of 2026-08-21)
Jan. 29, 2013 PTCT P None — — — Indirect — Acquired (price as of 2026-08-21)
June 3, 2010 CYTK S 5,382 $3.00 $16,146 4,340,923 Indirect -0.12% Disposed 330.4% (price as of 2026-08-21)
May 27, 2010 CYTK S 57,608 $3.00 $172,824 4,346,305 Indirect -1.31% Disposed 330.4% (price as of 2026-08-21)
May 19, 2010 CYTK S 16,239 $3.00 $48,717 4,403,913 Indirect -0.37% Disposed 330.4% (price as of 2026-08-21)
May 18, 2010 CYTK S 414,588 $3.00 $1,243,764 4,420,152 Indirect -8.58% Disposed 330.4% (price as of 2026-08-21)
May 12, 2010 CYTK S 82,738 $3.00 $248,214 4,834,740 Indirect -1.68% Disposed 330.4% (price as of 2026-08-21)
May 11, 2010 CYTK S 36,500 $3.00 $109,500 4,917,478 Indirect -0.74% Disposed 330.4% (price as of 2026-08-21)
May 6, 2010 CYTK S 33,446 $3.03 $101,341 4,953,978 Indirect -0.67% Disposed 326.1% (price as of 2026-08-21)
May 5, 2010 CYTK S 402,100 $3.04 $1,222,384 4,987,424 Indirect -7.46% Disposed 324.7% (price as of 2026-08-21)

Showing latest 100 of 127 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
Jan. 2, 2026 PTCT Stock Option (Right to Buy) Common Stock (6,950) $76.74 Jan. 1, 2036 6,950 Acquired
Dec. 16, 2025 PTCT Stock Option (Right to Buy) Common Stock (24,000) $30.86 Jan. 3, 2026 24,000 Disposed
Jan. 3, 2025 PTCT Stock Option (Right to Buy) Common Stock (17,600) $46.54 Jan. 2, 2035 17,600 Acquired
Feb. 15, 2024 PTCT Stock Option (Right to Buy) Common Stock (20,000) $25.69 Feb. 14, 2034 20,000 Acquired
Jan. 5, 2023 PTCT Stock Option (Right to Buy) Common Stock (20,000) $39.42 Jan. 4, 2033 20,000 Acquired
Jan. 7, 2022 PTCT Stock Option (Right To Buy) Common Stock (24,000) $38.10 Jan. 6, 2032 24,000 Acquired
Jan. 6, 2021 PTCT Stock Option (Right To Buy) Common Stock (20,000) $66.49 Jan. 5, 2031 20,000 Acquired
Jan. 29, 2020 PTCT Stock Option (Right To Buy) Common Stock (20,000) $51.16 Jan. 28, 2030 20,000 Acquired
Jan. 22, 2019 PTCT Stock Option (Right to Buy) Common Stock (28,000) $33.02 Jan. 21, 2029 28,000 Acquired
Jan. 3, 2018 PTCT Stock Option (Right To Buy) Common Stock (28,000) $18.01 Jan. 2, 2028 28,000 Acquired
Jan. 3, 2017 PTCT Stock Option (Right To Buy) Common Stock (24,000) $11.23 Jan. 2, 2027 24,000 Acquired
Sept. 23, 2016 PTCT Stock Option (Right to Buy) Common Stock (60,000) $10.85 May 15, 2023 60,000 Disposed
Jan. 4, 2016 PTCT Stock Option (right to buy) Common Stock (24,000) $30.86 Jan. 3, 2026 24,000 Acquired
Jan. 2, 2015 PTCT Stock Option (right to buy) Common Stock (24,000) $51.00 Jan. 1, 2025 24,000 Acquired
Jan. 28, 2014 PTCT Stock Option (right to buy) Common Stock (20,000) $27.05 Jan. 27, 2024 20,000 Acquired
June 25, 2013 PTCT Series Five Junior Preferred Stock Common Stock (608,670) — — 608,670 Disposed
June 25, 2013 PTCT Series Four Senior Preferred Stock Common Stock (155,366) — — 155,366 Disposed
June 25, 2013 PTCT Series Five Junior Preferred Stock Common Stock (1,980,029) — — 1,980,029 Disposed
June 25, 2013 PTCT Series Four Senior Preferred Stock Common Stock (276,853) — — 276,853 Disposed
May 15, 2013 PTCT Stock Option (right to buy) Common Stock (60,000) $10.85 May 15, 2023 60,000 Disposed
March 7, 2013 PTCT Series Five Junior Preferred Stock Common Stock (25,578) — — 25,578 Acquired
March 7, 2013 PTCT Warrant (right to purchase) Series Five Junior Preferred Stock (25,578) $0.08 Jan. 29, 2020 25,578 Disposed
March 7, 2013 PTCT Warrant (right to purchase) Series Five Junior Preferred Stock (172) $0.08 Jan. 29, 2020 172 Disposed
March 7, 2013 PTCT Warrant (right to purchase) Series Five Junior Preferred Stock (25,570) $0.08 Jan. 29, 2020 25,750 Acquired
March 7, 2013 PTCT Warrant (right to purchase) Series Two Preferred Stock (206,003) $0.01 Jan. 29, 2020 206,003 Disposed
March 7, 2013 PTCT Series Five Junior Preferred Stock Common Stock (188,926) — — 188,926 Acquired
March 7, 2013 PTCT Warrant (right to purchase) Series Five Junior Preferred Stock (188,926) $0.00 Jan. 29, 2020 188,926 Disposed
March 7, 2013 PTCT Warrant (right to purchase) Series Five Junior Preferred Stock (44) $0.00 Jan. 29, 2020 44 Disposed
March 7, 2013 PTCT Warrant (right to purchase) Series Five Junior Preferred Stock (188,970) $0.00 Jan. 29, 2020 188,970 Acquired
March 7, 2013 PTCT Warrant (right to purchase) Series One Preferred Stock (52,736) $0.01 Jan. 29, 2020 52,736 Disposed
March 7, 2013 PTCT Series Five Junior Preferred Stock Common Stock (394,166) — — 394,166 Acquired
March 7, 2013 PTCT Series One Preferred Stock Series Five Junior Preferred Stock (394,166) — — 394,166 Disposed
March 7, 2013 PTCT Series One Preferred Stock Series Five Junior Preferred Stock (394,166) — — 394,166 Acquired
March 7, 2013 PTCT Series One Preferred Stock Common Stock (110,000) — — 110,000 Disposed
March 7, 2013 PTCT Series Four Senior Preferred Stock Common Stock (51,547) — — 51,547 Acquired
March 7, 2013 PTCT 8% Convertible Promissory Notes Series Four Senior Preferred Stock (51,547) — — — Disposed
March 7, 2013 PTCT Series Four Senior Preferred Stock Common Stock (103,819) — — 103,819 Acquired
March 7, 2013 PTCT Series Five Junior Preferred Stock Common Stock (55,356) — — 55,356 Acquired
March 7, 2013 PTCT Warrant (right to purchase) Series Five Junior Preferred Stock (55,356) $0.08 Jan. 29, 2020 55,356 Disposed
March 7, 2013 PTCT Warrant (right to purchase) Series Five Junior Preferred Stock (372) $0.08 Jan. 29, 2020 372 Disposed
March 7, 2013 PTCT Warrant (right to purchase) Series Five Junior Preferred Stock (55,728) $0.08 Jan. 29, 2020 55,728 Acquired
March 7, 2013 PTCT Warrant (right to purchase) Series Two Preferred Stock (445,828) $0.01 Jan. 29, 2020 445,828 Disposed
March 7, 2013 PTCT Series Five Junior Preferred Stock Common Stock (408,873) — — 408,873 Acquired
March 7, 2013 PTCT Warrant (right to purchase) Series Five Junior Preferred Stock (408,873) $0.00 Jan. 29, 2020 408,873 Disposed
March 7, 2013 PTCT Warrant (right to purchase) Series Five Junior Preferred Stock (96) $0.00 Jan. 29, 2020 96 Disposed
March 7, 2013 PTCT Warrant (right to purchase) Series Five Junior Preferred Stock (408,969) $0.00 Jan. 29, 2020 408,969 Acquired
March 7, 2013 PTCT Warrant (right to purchase) Series One Preferred Stock (114,131) $0.01 Jan. 29, 2020 114,131 Disposed
March 7, 2013 PTCT Series Five Junior Preferred Stock Common Stock (1,515,800) — — 1,515,800 Acquired
March 7, 2013 PTCT Series Two Preferred Stock Series Five Junior Preferred Stock (338,304) — — 338,304 Disposed
March 7, 2013 PTCT Series One Preferred Stock Series Five Junior Preferred Stock (1,177,496) — — 1,177,496 Disposed
March 7, 2013 PTCT Series Two Preferred Stock Series Five Junior Preferred Stock (338,304) — — 338,304 Acquired
March 7, 2013 PTCT Series Two Preferred Stock Common Stock (2,706,450) — — 2,706,450 Disposed
March 7, 2013 PTCT Series One Preferred Stock Series Five Junior Preferred Stock (1,177,496) — — 1,177,496 Acquired
March 7, 2013 PTCT Series One Preferred Stock Common Stock (328,604) — — 328,604 Disposed
March 7, 2013 PTCT Series Four Senior Preferred Stock Common Stock (111,389) — — 111,389 Acquired
March 7, 2013 PTCT 8% Convertible Promissory Notes Series Four Senior Preferred Stock (111,389) — — — Disposed
March 7, 2013 PTCT Series Four Senior Preferred Stock Common Stock (165,464) — — 165,464 Acquired
Feb. 15, 2013 PTCT 8% Convertible Promissory Notes Series Four Senior Preferred Stock — — — Acquired
Feb. 15, 2013 PTCT 8% Convertible Promissory Notes Series Four Senior Preferred Stock [F4] — — — Acquired
Jan. 29, 2013 PTCT Warrant (right to purchase) Series Two Preferred Stock (206,003) $0.01 Jan. 29, 2020 206,003 Acquired
Jan. 29, 2013 PTCT Warrant (right to purchase) Series One Preferred Stock (52,736) $0.01 Jan. 29, 2020 52,736 Acquired
Jan. 29, 2013 PTCT 8% Convertible Promissory Notes Series Four Senior Preferred Stock — — — Acquired
Jan. 29, 2013 PTCT Warrant (right to purchase) Series Two Preferred Stock (445,828) $0.01 Jan. 29, 2020 445,828 Acquired
Jan. 29, 2013 PTCT Warrant (right to purchase) Series One Preferred Stock (114,131) $0.01 Jan. 29, 2020 114,131 Acquired
Jan. 29, 2013 PTCT 8% Convertible Promissory Notes Series Four Senior Preferred Stock [F4] — — — Acquired
May 20, 2010 CYTK Non-Qualified Stock Option (right to buy) Common Stock (20,000) $2.81 May 20, 2020 20,000 Acquired
Jan. 4, 2010 CYTK Stock Option (right to buy) Common Stock (8,038) $3.11 Jan. 4, 2020 8,038 Acquired
May 21, 2009 CYTK Stock Option (right to buy) Common Stock $1.85 May 21, 2019 15,000 Acquired
May 21, 2009 CYTK Warrants Common Stock $2.75 Nov. 21, 2011 761,420 Acquired
Jan. 2, 2009 CYTK Stock Option (right to buy) Common Stock (8,771) $2.85 Jan. 2, 2019 8,771 Acquired
July 1, 2008 CYTK Stock Option (right to buy) Common Stock (3,351) $3.73 July 1, 2018 3,351 Acquired
May 22, 2008 CYTK Stock Option (right to buy) Common Stock (15,000) $3.83 May 22, 2018 15,000 Acquired
May 24, 2007 CYTK Stock Option (right to buy) Common Stock $6.55 May 24, 2017 10,000 Acquired
May 24, 2007 CYTK Stock Option (right to buy) Common Stock (7,500) $6.55 May 24, 2017 7,500 Acquired
May 25, 2006 CYTK Stock Option (right to buy) Common Stock (7,500) $7.29 May 25, 2016 7,500 Acquired
May 19, 2005 CYTK Stock Option (right to buy) Common Stock (7,500) $5.55 May 19, 2015 7,500 Acquired
April 29, 2004 CYTK Series C Preferred Stock Common Stock (108,631) — April 29, 2004 108,631 Disposed
April 29, 2004 CYTK Series C Preferred Stock Common Stock (144,000) — April 29, 2004 144,000 Disposed
April 29, 2004 CYTK Series E Preferred Stock Common Stock (695) — April 29, 2004 695 Disposed
April 29, 2004 CYTK Series C Preferred Stock Common Stock (1,287) — April 29, 2004 1,287 Disposed
April 29, 2004 CYTK Series E Preferred Stock Common Stock (218,308) — April 29, 2004 218,308 Disposed
April 29, 2004 CYTK Series C Preferred Stock Common Stock (404,445) — April 29, 2004 404,445 Disposed
April 29, 2004 CYTK Series E Preferred Stock Common Stock (780,996) — April 29, 2004 780,996 Disposed
April 29, 2004 CYTK Series C Preferred Stock Common Stock (1,446,899) — April 29, 2004 1,446,899 Disposed

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

Initial ownership (Form 3) 24 holdings

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

Date Ticker Security Shares Ownership
March 8, 2017 HLNE Class B Common Stock 1,102,005 Indirect
March 8, 2017 HLNE Class B Units→ Class A Common Stock (1,102,005) 1,102,005 Indirect
June 19, 2013 PTCT Common Stock 26,766 Direct
June 19, 2013 PTCT Stock Option (right to buy)→ Common Stock (60,000) 60,000 Direct
June 19, 2013 PTCT Stock Option (right to buy)→ Common Stock (276) 276 Direct
June 19, 2013 PTCT Stock Option (right to buy)→ Common Stock (276) 276 Direct
June 19, 2013 PTCT Stock Option (right to buy)→ Common Stock (216) 216 Direct
June 19, 2013 PTCT Stock Option (right to buy)→ Common Stock (266) 266 Direct
June 19, 2013 PTCT Stock Option (right to buy)→ Common Stock (166) 166 Direct
June 19, 2013 PTCT Stock Option (right to buy)→ Common Stock (83) 83 Direct
June 19, 2013 PTCT Stock Option (right to buy)→ Common Stock (125) 125 Direct
June 19, 2013 PTCT Stock Option (right to buy)→ Common Stock (90) 90 Direct
June 19, 2013 PTCT Series Four Senior Preferred Stock→ Common Stock (276,853) 276,853 Indirect
June 19, 2013 PTCT Series Four Senior Preferred Stock→ Common Stock (155,366) 155,366 Indirect
June 19, 2013 PTCT Series Five Junior Preferred Stock→ Common Stock (1,980,029) 1,980,029 Indirect
June 19, 2013 PTCT Series Five Junior Preferred Stock→ Common Stock (608,670) 608,670 Indirect
April 29, 2004 CYTK Series C Preferred Stock→ Common Stock — Indirect
April 29, 2004 CYTK Series E Preferred Stock→ Common Stock — Indirect
April 29, 2004 CYTK Series C Preferred Stock→ Common Stock — Indirect
April 29, 2004 CYTK Series E Preferred Stock→ Common Stock — Indirect
April 29, 2004 CYTK Series C Preferred Stock→ Common Stock — Indirect
April 29, 2004 CYTK Series E Preferred Stock→ Common Stock — Indirect
April 29, 2004 CYTK Series C Preferred Stock→ Common Stock — Indirect
April 29, 2004 CYTK Series C Preferred Stock→ Common Stock — Indirect