Albert Chao

CIK 1299403 · View on SEC EDGAR ↗

Insider

First SEC filing: July 29, 2014 · Latest: July 29, 2014

On this page

Insider at

Insider transactions

0 buys (P) 2 sells (S) Net: $-3,120,774 + 70 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

70 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Aug. 11, 2026 WLK S 7,489 $79.70 $596,873 674,264 Direct -1.10% Disposed -0.9% (price as of 2026-08-20)
Aug. 11, 2026 WLK S 31,384 $80.42 $2,523,901 642,880 Direct -4.65% Disposed -1.8% (price as of 2026-08-20)
March 6, 2018 WLKP P 2,000 $23.16 $46,320 53,500 Direct +3.88% Acquired -6.9% (price as of 2026-08-20)
March 5, 2018 WLKP P 2,000 $22.91 $45,820 51,500 Direct +4.04% Acquired -5.9% (price as of 2026-08-20)
March 2, 2018 WLKP P 2,000 $22.86 $45,720 49,500 Direct +4.21% Acquired -5.7% (price as of 2026-08-20)
March 1, 2018 WLKP P 2,500 $22.98 $57,450 47,500 Direct +5.56% Acquired -6.2% (price as of 2026-08-20)
Nov. 29, 2017 WLK S 16,844 $95.25 $1,604,391 274,018 Direct -5.79% Disposed -17.1% (price as of 2026-08-20)
Nov. 29, 2017 WLKP P 7,425 $22.00 $163,350 27,275 Indirect +37.41% Acquired -2.0% (price as of 2026-08-20)
Nov. 28, 2017 WLK S 1,010 $94.85 $95,798 274,018 Direct -0.37% Disposed -16.8% (price as of 2026-08-20)
Nov. 28, 2017 WLK S 23,990 $94.55 $2,268,254 275,028 Direct -8.02% Disposed -16.5% (price as of 2026-08-20)
Nov. 28, 2017 WLKP P 7,475 $21.96 $164,151 19,850 Indirect +60.40% Acquired -1.8% (price as of 2026-08-20)
Nov. 27, 2017 WLKP P 7,475 $22.18 $165,796 12,375 Indirect +152.55% Acquired -2.8% (price as of 2026-08-20)
Nov. 27, 2017 WLK S 2,966 $94.25 $279,546 274,018 Direct -1.07% Disposed -16.2% (price as of 2026-08-20)
Nov. 27, 2017 WLK S 22,034 $93.92 $2,069,433 276,984 Direct -7.37% Disposed -15.9% (price as of 2026-08-20)
Nov. 24, 2017 WLKP P 2,900 $21.97 $63,713 4,900 Indirect +145.00% Acquired -1.9% (price as of 2026-08-20)
Nov. 24, 2017 WLK S 20,000 $94.58 $1,891,600 274,018 Direct -6.80% Disposed -16.5% (price as of 2026-08-20)
Nov. 22, 2017 WLKP P 2,000 $21.49 $42,980 2,000 Indirect — Acquired 0.3% (price as of 2026-08-20)
Nov. 22, 2017 WLK S 101 $95.60 $9,656 274,018 Direct -0.04% Disposed -17.4% (price as of 2026-08-20)
Nov. 22, 2017 WLK S 24,899 $94.89 $2,362,666 274,119 Direct -8.33% Disposed -16.8% (price as of 2026-08-20)
Nov. 22, 2017 WLKP P 2,000 $21.49 $42,980 47,000 Direct +4.44% Acquired 0.3% (price as of 2026-08-20)
Nov. 21, 2017 WLK S 25,000 $94.34 $2,358,500 274,018 Direct -8.36% Disposed -16.3% (price as of 2026-08-20)
Feb. 23, 2017 WLK S 42,180 $63.35 $2,672,103 274,018 Direct -13.34% Disposed 24.6% (price as of 2026-08-20)
Nov. 17, 2016 WLK S 300 $54.57 $16,371 0 Indirect -100.00% Disposed 44.7% (price as of 2026-08-20)
Nov. 17, 2016 WLK S 9,700 $53.82 $522,054 300 Indirect -97.00% Disposed 46.7% (price as of 2026-08-20)
Nov. 16, 2016 WLK S 10,000 $54.45 $544,500 10,000 Indirect -50.00% Disposed 45.0% (price as of 2026-08-20)
Nov. 15, 2016 WLK S 10,000 $53.06 $530,600 20,000 Indirect -33.33% Disposed 48.8% (price as of 2026-08-20)
Nov. 14, 2016 WLK S 10,000 $52.84 $528,400 30,000 Indirect -25.00% Disposed 49.4% (price as of 2026-08-20)
Aug. 4, 2014 WLKP P 45,000 $24.00 $1,080,000 45,000 Indirect — Acquired -10.2% (price as of 2026-08-20)
Aug. 4, 2014 WLKP P 1,436,115 — — 1,436,115 Indirect — Acquired (price as of 2026-08-20)
Aug. 4, 2014 WLKP P 45,000 $24.00 $1,080,000 45,000 Direct — Acquired -10.2% (price as of 2026-08-20)

Showing latest 100 of 249 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
Aug. 11, 2026 WLK Employee Option (right to buy) Common Stock (38,873) $61.86 Feb. 17, 2027 38,873 Disposed
Feb. 20, 2026 WLK Restricted Stock Units Common Stock (14,945) — — 14,945 Acquired
Feb. 20, 2026 WLK Employee Option (right to buy) Common Stock (54,763) $94.48 Feb. 20, 2036 54,763 Acquired
Feb. 17, 2026 WLK Restricted Stock Units Common Stock (16,555) — — 16,555 Disposed
Feb. 21, 2025 WLK Restricted Stock Units Common Stock (12,322) — — 12,322 Acquired
Feb. 21, 2025 WLK Employee Option (right to buy) Common Stock (37,172) $110.15 Feb. 21, 2035 37,172 Acquired
Feb. 18, 2025 WLK Restricted Stock Units Common Stock (17,972) — — 17,972 Disposed
Aug. 16, 2024 WLK Employee Option (right to buy) Common Stock (45,298) $68.09 Aug. 20, 2025 45,298 Disposed
Feb. 19, 2024 WLK Restricted Stock Units Common Stock (19,810) — — 19,810 Disposed
Feb. 16, 2024 WLK Employee Option (right to buy) Common Stock (44,324) $144.49 Feb. 16, 2034 44,324 Acquired
Feb. 16, 2024 WLK Restricted Stock Units Common Stock (16,010) — — 16,010 Acquired
Aug. 31, 2023 WLK Employee Option (right to buy) Common Stock (19,988) $63.98 Feb. 14, 2024 19,988 Acquired
Aug. 30, 2023 WLK Employee Option (right to buy) Common Stock (20,000) $63.98 Feb. 14, 2024 20,000 Acquired
Feb. 20, 2018 WLK Restricted Stock Units Common Stock (13,585) — — 13,585 Disposed
Feb. 16, 2018 WLK Restricted Stock Units Common Stock (11,983) — — 11,983 Acquired
Feb. 16, 2018 WLK Employee Option (right to buy) Common Stock (44,647) $107.75 Feb. 16, 2028 44,647 Acquired
Nov. 29, 2017 WLK Employee Option (right to buy) Common Stock (16,844) $9.64 Feb. 15, 2018 16,844 Disposed
Nov. 28, 2017 WLK Employee Option (right to buy) Common Stock (25,000) $9.64 Feb. 15, 2018 25,000 Disposed
Nov. 27, 2017 WLK Employee Option (right to buy) Common Stock (25,000) $9.64 Feb. 15, 2018 25,000 Disposed
Nov. 24, 2017 WLK Employee Option (right to buy) Common Stock (20,000) $9.64 Feb. 15, 2018 20,000 Disposed
Nov. 22, 2017 WLK Employee Option (right to buy) Common Stock (25,000) $9.64 Feb. 15, 2018 25,000 Disposed
Nov. 21, 2017 WLK Employee Option (right to buy) Common Stock (25,000) $9.64 Feb. 15, 2018 25,000 Disposed
Feb. 23, 2017 WLK Employee Option (right to buy) Common Stock (42,180) $15.80 Feb. 23, 2017 42,180 Disposed
Feb. 17, 2017 WLK Restricted Stock Units Common Stock (19,902) — — 19,902 Acquired
Feb. 17, 2017 WLK Employee Option (right to buy) Common Stock (77,746) $61.86 Feb. 17, 2027 77,746 Acquired
Feb. 14, 2017 WLK Restricted Stock Units Common Stock (12,838) — — 12,838 Disposed
Feb. 18, 2016 WLK Restricted Stock Units Common Stock (21,454) — — 21,454 Acquired
Feb. 18, 2016 WLK Employee Option (right to buy) Common Stock (81,673) $44.42 Feb. 18, 2026 81,673 Acquired
Feb. 15, 2016 WLK Restricted Stock Units Common Stock (14,246) — — 14,246 Disposed
Feb. 20, 2015 WLK Restricted Stock Units Common Stock (13,585) — — 13,585 Acquired
Feb. 20, 2015 WLK Employee Option (right to buy) Common Stock (45,298) $68.09 Feb. 20, 2025 45,298 Acquired
Feb. 14, 2014 WLK Restricted Stock Units Common Stock (6,419) — — 6,419 Acquired
Feb. 14, 2014 WLK Employee Option (right to buy) Common Stock (19,994) $127.96 Feb. 14, 2024 19,994 Acquired
Feb. 15, 2013 WLK Restricted Stock Units Common Stock (7,123) — — 7,123 Acquired
Feb. 15, 2013 WLK Employee Option (right to buy) Common Stock (18,938) $91.40 Feb. 15, 2023 18,938 Acquired
Nov. 26, 2012 WLK Employee Option (right to buy) Common Stock (42,579) $14.24 Feb. 13, 2019 42,579 Acquired
Nov. 26, 2012 WLK Employee Option (right to buy) Common Stock (4,514) $36.10 March 15, 2016 4,514 Acquired
Nov. 26, 2012 WLK Employee Option (right to buy) Common Stock (8,547) $27.22 Aug. 31, 2015 8,547 Acquired
Nov. 26, 2012 WLK Employee Option (right to buy) Common Stock (35,400) $14.50 Aug. 16, 2014 35,400 Acquired
Nov. 23, 2012 WLK Employee Option (right to buy) Common Stock (20,000) $14.24 Feb. 13, 2019 20,000 Acquired
Nov. 23, 2012 WLK Employee Option (right to buy) Common Stock (5,000) $36.10 March 15, 2016 5,000 Acquired
Nov. 23, 2012 WLK Employee Option (right to buy) Common Stock (5,000) $27.22 Aug. 31, 2015 5,000 Acquired
Nov. 23, 2012 WLK Employee Option (right to buy) Common Stock (9,000) $14.50 Aug. 16, 2014 9,000 Acquired
Feb. 17, 2012 WLK Employee Option (right to buy) Common Stock (24,629) $60.10 Feb. 17, 2022 24,629 Acquired
Feb. 17, 2012 WLK Employee Option (right to buy) Common Stock (30,787) $60.10 Feb. 17, 2022 30,787 Acquired
Feb. 18, 2011 WLK Employee Option (right to buy) Common Stock (20,672) $45.83 Feb. 18, 2021 20,672 Acquired
Feb. 18, 2011 WLK Employee Option (right to buy) Common Stock (27,574) $45.83 Feb. 18, 2021 27,574 Acquired
Feb. 26, 2010 WLK Employee Option (right to buy) Common Stock (47,390) $20.52 Feb. 26, 2020 47,390 Acquired
Feb. 26, 2010 WLK Employee Option (right to buy) Common Stock (63,249) $20.52 Feb. 26, 2020 63,249 Acquired
Feb. 13, 2009 WLK Employee Option (right to buy) Common Stock (140,525) $14.24 Feb. 13, 2019 140,525 Acquired
Feb. 13, 2009 WLK Employee Option (right to buy) Common Stock (105,291) $14.24 Feb. 13, 2019 105,291 Acquired
Feb. 19, 2008 WLK Employee Option (right to buy) Common Stock (49,007) $19.29 Feb. 15, 2018 49,007 Acquired
Feb. 19, 2008 WLK Employee Option (right to buy) Common Stock (68,422) $19.29 Feb. 15, 2018 68,422 Acquired
March 2, 2007 WLK Employee Option (right to buy) Common Stock (15,488) $31.61 Feb. 23, 2017 15,488 Acquired
March 2, 2007 WLK Employee Option (right to buy) Common Stock (21,090) $31.61 Feb. 23, 2017 21,090 Acquired
March 20, 2006 WLK Employee Option (right to buy) Common Stock (6,977) $36.10 March 15, 2016 6,977 Acquired
March 20, 2006 WLK Employee Option (right to buy) Common Stock (9,514) $36.10 March 15, 2016 9,514 Acquired
Sept. 9, 2005 WLK Employee Option (right to buy) Common Stock (9,934) $27.22 Aug. 31, 2015 9,934 Acquired
Sept. 9, 2005 WLK Employee Option (right to buy) Common Stock (13,547) $27.22 Aug. 31, 2015 13,547 Acquired
Aug. 16, 2004 WLK Incentive Stock Option Common Stock (35,300) $14.50 Aug. 16, 2014 35,300 Acquired
Aug. 16, 2004 WLK Incentive Stock Option Common Stock (44,400) $14.50 Aug. 16, 2014 44,400 Acquired

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

Initial ownership (Form 3) 2 holdings

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

Date Ticker Security Shares Ownership
July 29, 2014 WLKP Common Units (Limited Partner Interests) 1,436,115 Indirect
July 29, 2014 WLKP Subordinated Units (Limited Partner Interests)→ Common Units (12,686,115) 12,686,115 Indirect

Compensation (DEF 14A)

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

WLK

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2013 $891,333 — $651,000 $651,000 $3,508,239 — $51,993 $5,753,566
2012 $862,500 — — — $3,121,587 — $233,583 $5,658,046
2011 $828,333 — — — $1,602,793 — $50,477 $3,541,603

WLKP

CEO
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2023 $1,256,000 — — — — — — $125,600

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