Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 78 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

78 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Feb. 27, 2018 WLK S 4,038 $111.00 $448,218 7,662 Direct -34.51% Disposed -42.8% (price as of 2026-10-02)
Nov. 14, 2017 WLK S 4,367 $92.33 $403,205 11,700 Direct -27.18% Disposed -31.2% (price as of 2026-10-02)
Aug. 11, 2015 WLK S 5,143 $63.00 $324,009 11,613 Direct -30.69% Disposed 0.8% (price as of 2026-10-02)
March 13, 2014 WLK S 1,609 $135.03 $217,263 7,197 Direct -18.27% Disposed -5.9% (price as of 2026-10-02)
Nov. 25, 2013 WLK S 2,534 $112.21 $284,340 8,806 Direct -22.35% Disposed 13.2% (price as of 2026-10-02)
March 13, 2013 WLK S 1,400 $94.96 $132,944 11,340 Direct -10.99% Disposed 33.7% (price as of 2026-10-02)
March 13, 2013 WLK S 444 $94.96 $42,162 12,740 Direct -3.37% Disposed 33.7% (price as of 2026-10-02)
March 1, 2013 NRP P 1,000 $21.79 $21,790 17,708 Direct +5.99% Acquired -49.7% (price as of 2026-10-02)
March 1, 2013 NRP P 2,000 $21.80 $43,600 19,708 Direct +11.29% Acquired -49.8% (price as of 2026-10-02)
March 1, 2013 NRP P 1,292 $21.84 $28,217 21,000 Direct +6.56% Acquired -49.9% (price as of 2026-10-02)
March 1, 2013 NRP P 1,500 $21.89 $32,835 22,500 Direct +7.14% Acquired -50.0% (price as of 2026-10-02)
March 1, 2013 NRP P 3,000 $21.75 $65,250 16,708 Direct +21.89% Acquired -49.7% (price as of 2026-10-02)
March 1, 2013 NRP P 1,000 $21.70 $21,700 13,708 Direct +7.87% Acquired -49.5% (price as of 2026-10-02)
March 1, 2013 NRP P 708 $21.64 $15,321 12,708 Direct +5.90% Acquired -49.4% (price as of 2026-10-02)
Feb. 28, 2013 NRP P 2,000 $21.90 $43,800 12,000 Direct +20.00% Acquired -50.0% (price as of 2026-10-02)
Feb. 28, 2013 NRP P 1,000 $21.87 $21,870 10,000 Direct +11.11% Acquired -49.9% (price as of 2026-10-02)
Feb. 28, 2013 NRP P 2,000 $21.85 $43,700 9,000 Direct +28.57% Acquired -49.9% (price as of 2026-10-02)
Feb. 28, 2013 NRP P 3,845 $21.84 $83,975 7,000 Direct +121.87% Acquired -49.9% (price as of 2026-10-02)
Feb. 28, 2013 NRP P 2,000 $21.83 $43,660 3,155 Direct +173.16% Acquired -49.8% (price as of 2026-10-02)
Feb. 28, 2013 NRP P 1,000 $21.82 $21,820 1,155 Direct +645.16% Acquired -49.8% (price as of 2026-10-02)
Feb. 28, 2013 NRP P 155 $21.80 $3,379 155 Direct · Acquired -49.8% (price as of 2026-10-02)
May 14, 2012 WLK S 2,324 $57.10 $132,700 10,029 Direct -18.81% Disposed 122.4% (price as of 2026-10-02)

Showing latest 100 of 177 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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
Aug. 21, 2018 WLK Restricted Stock Units Common Stock (603) · · 603 Acquired
Aug. 18, 2018 WLK Restricted Stock Units Common Stock (1,721) · · 1,721 Disposed
Aug. 17, 2018 WLK Restricted Stock Units Common Stock (1,003) · · 1,003 Disposed
Aug. 17, 2018 WLK Restricted Stock Units Common Stock (1,409) · · 1,409 Acquired
May 18, 2018 WLK Restricted Stock Units Common Stock (103) · · 103 Acquired
Aug. 22, 2017 WLK Restricted Stock Units Common Stock (357) · · 357 Disposed
Aug. 21, 2017 WLK Restricted Stock Units Common Stock (603) · · 603 Disposed
Aug. 18, 2017 WLK Restricted Stock Units Common Stock (1,721) · · 1,721 Acquired
Aug. 17, 2017 WLK Restricted Stock Units Common Stock (1,003) · · 1,003 Disposed
Feb. 13, 2017 NRP Phantom Units [F2] Common Units (370) · Feb. 13, 2017 370 Disposed
Aug. 23, 2016 WLK Restricted Stock Units Common Stock (588) · · 588 Disposed
Aug. 22, 2016 WLK Restricted Stock Units Common Stock (357) · · 357 Disposed
Aug. 22, 2016 WLK Restricted Stock Units Common Stock (603) · · 603 Disposed
Aug. 17, 2016 WLK Restricted Stock Units Common Stock (3,009) · Aug. 17, 2026 3,009 Acquired
Feb. 14, 2016 NRP Phantom Units [F2] Common Units (3,700) · Feb. 14, 2016 3,700 Disposed
Aug. 23, 2015 WLK Restricted Stock Units Common Stock (586) · · 586 Disposed
Aug. 22, 2015 WLK Restricted Stock Units Common Stock (357) · · 357 Disposed
Aug. 21, 2015 WLK Restricted Stock Units Common Stock (1,809) · Aug. 21, 2025 1,809 Acquired
Aug. 11, 2015 WLK Employee Option (right to buy) Common Stock (1,776) $12.26 Aug. 20, 2019 1,776 Disposed
Feb. 11, 2015 NRP Phantom Units [F3] Common Units (4,100) · Feb. 11, 2019 4,100 Acquired
Feb. 10, 2015 NRP Phantom Units [F3] Common Units (3,580) · Feb. 10, 2015 3,580 Disposed
Aug. 23, 2014 WLK Restricted Stock Units Common Stock (586) · · 586 Disposed
Aug. 22, 2014 WLK Restricted Stock Units Common Stock (1,071) · Aug. 22, 2024 1,071 Acquired
Feb. 12, 2014 NRP Phantom Units [F3] Common Units (3,885) · Feb. 12, 2018 3,885 Acquired
Feb. 11, 2014 NRP Phantom Units [F3] Common Units (3,475) · Feb. 11, 2014 3,475 Disposed
Aug. 23, 2013 WLK Restricted Stock Units Common Stock (880) · · 880 Acquired
March 13, 2013 WLK Employee Option (right to buy) Common Stock (957) $20.82 Aug. 15, 2018 957 Disposed
March 13, 2013 WLK Employee Option (right to buy) Common Stock (887) $24.51 Aug. 20, 2019 887 Disposed
Feb. 26, 2013 NRP Phantom Units [F3] Common Units (3,375) · Feb. 26, 2013 3,375 Disposed
Feb. 13, 2013 NRP Phantom Units [F1] Common Units (3,700) · Feb. 13, 2017 3,700 Acquired
May 14, 2012 WLK Common Stock Common Stock (887) $24.51 Aug. 20, 2019 887 Acquired
May 14, 2012 WLK Common Stock Common Stock (957) $20.82 Aug. 15, 2018 957 Acquired
May 14, 2012 WLK Common Stock Common Stock (480) $27.12 Aug. 17, 2017 480 Acquired
Feb. 28, 2012 NRP Phantom Units [F3] Common Units (3,000) · Feb. 28, 2012 3,000 Disposed
Feb. 14, 2012 NRP Phantom Units [F1] Common Units (375) · Feb. 26, 2013 375 Acquired
Feb. 14, 2012 NRP Phantom Units [F1] Common Units (475) · Feb. 11, 2014 475 Acquired
Feb. 14, 2012 NRP Phantom Units [F1] Common Units (580) · Feb. 10, 2015 580 Acquired
Feb. 14, 2012 NRP Phantom Units [F1] Common Units (3,700) · Feb. 14, 2016 3,700 Acquired
March 2, 2011 WLK Employee Option (right to buy) Common Stock (1,345) $30.07 Aug. 21, 2020 1,345 Acquired
March 2, 2011 WLK Employee Option (right to buy) Common Stock (1,440) $27.12 Aug. 17, 2020 1,440 Acquired
March 2, 2011 WLK Employee Option (right to buy) Common Stock (887) $24.51 Aug. 20, 2020 887 Acquired
March 2, 2011 WLK Employee Option (right to buy) Common Stock (1,912) $20.82 Aug. 15, 2021 1,912 Acquired
March 2, 2011 WLK Employee Option (right to buy) Common Stock (2,759) $14.50 Aug. 16, 2017 2,759 Acquired
Feb. 13, 2011 NRP Phantom Units [F3] Common Units (3,000) · Feb. 13, 2011 3,000 Disposed
Feb. 10, 2011 NRP Phantom Units [F3] Common Units (3,000) · Feb. 10, 2015 3,000 Acquired
Feb. 13, 2010 NRP Phantom Units [F3] Common Units (3,000) · Feb. 13, 2010 3,000 Disposed
Feb. 11, 2010 NRP Phantom Units [F3] Common Units (3,000) · Feb. 11, 2014 3,000 Acquired
Aug. 20, 2009 WLK Common Stock Common Stock (3,549) $24.51 Aug. 20, 2019 3,549 Acquired
Feb. 26, 2009 NRP Phantom Units [F1] Common Units (3,000) · Feb. 26, 2013 3,000 Acquired
Feb. 14, 2009 NRP Phantom Units [F3] Common Units (3,000) · Feb. 14, 2009 3,000 Disposed
Aug. 15, 2008 WLK Common Stock Common Stock (3,826) $20.82 Aug. 15, 2018 3,826 Acquired
Feb. 28, 2008 NRP Phantom Units [F1] Common Units (3,000) · Feb. 28, 2012 3,000 Acquired
Feb. 11, 2008 NRP Phantom Units [F1] Common Units (3,000) · Feb. 11, 2008 3,000 Disposed
Aug. 17, 2007 WLK Common Stock Common Stock (1,920) $27.12 Aug. 17, 2017 1,920 Acquired
Feb. 13, 2007 NRP Phantom Units [F1] Common Units (1,500) · Feb. 13, 2011 1,500 Acquired
Feb. 13, 2007 NRP Phantom Units [F1] Common Units (150) · Feb. 13, 2010 150 Acquired
Feb. 13, 2007 NRP Phantom Units [F1] Common Units (150) · Feb. 14, 2009 150 Acquired
Feb. 13, 2007 NRP Phantom Units [F1] Common Units (150) · Feb. 11, 2008 150 Acquired
Feb. 11, 2007 NRP Phantom Units [F1] Common Units (1,350) · Feb. 11, 2007 1,350 Disposed
Aug. 21, 2006 WLK Options (right to buy) Common Stock (1,345) $30.07 Aug. 21, 2016 1,345 Acquired
Feb. 13, 2006 NRP Phantom Units [F1] Common Units (1,350) · Feb. 13, 2010 1,350 Acquired
Jan. 23, 2006 NRP Phantom Units [F1] Common Units (1,358) · Jan. 23, 2006 1,358 Disposed
Feb. 14, 2005 NRP Phantom Units [F1] Common Units (1,350) · Feb. 14, 2009 1,350 Acquired
Jan. 23, 2005 NRP Phantom Units [F1] Common Units (1,358) · Jan. 23, 2005 1,358 Disposed
Aug. 16, 2004 WLK Incentive Stock Options Common Stock (2,759) $14.50 Aug. 16, 2014 2,759 Acquired
Feb. 11, 2004 NRP Phantom Units [F1] Common Units (247) · Jan. 23, 2006 247 Acquired
Feb. 11, 2004 NRP Phantom Units [F1] Common Units (1,350) · Feb. 11, 2007 1,350 Acquired
Feb. 11, 2004 NRP Phantom Units [F1] Common Units (1,350) · Feb. 11, 2008 1,350 Acquired
Feb. 11, 2004 NRP Phantom Units [F1] Common Units (247) · Jan. 23, 2005 247 Acquired
Jan. 23, 2004 NRP Phantom Unit Common Units (1,111) · Jan. 23, 2004 1,111 Disposed
Aug. 19, 2003 NRP Common Unit Options (right to buy) Common Units (10,000) $21.94 · 10,000 Disposed
Aug. 19, 2003 NRP Phantom Unit Common Units (3,333) · · 3,333 Acquired

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

Initial ownership (Form 3) 1 holding

07

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

DateTickerSecuritySharesOwnership
April 9, 2014 ALLY Deferred Stock Units (DSU)→ Common Stock (4,665) 4,665 Direct