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WLK · Westlake Corp · Documents

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$63.50 +1.03 (+1.65%) At close · Oct 2
S&P 400 member Russell 1000 member Rebalance outlook locked
Market Cap
$8.65B
Shares
127.80M
Volume · Oct 2 1.51M Avg daily vol (3M) 946.42K

The company's filings as submitted to the SEC's EDGAR system — 10-K, 10-Q, 8-K, proxy statements and more — listed most recent first.

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Type Filing Date Period Open
8-K 2026-09-29 2026-09-24
8-K 2026-08-31 —
10-Q 2026-08-05 2026-06-30
8-K 2026-08-04 —
8-K 2026-07-29 —
8-K 2026-06-15 —
8-K 2026-05-18 2026-05-14
10-Q 2026-05-06 2026-03-31
8-K 2026-05-05 —
8-K 2026-05-01 2026-04-27
8-K 2026-04-20 2026-04-15
8-K 2026-04-14 2026-04-13
8-K 2026-04-06 2026-04-02
DEF 14A 2026-04-02 2026-05-14
8-K 2026-04-02 2026-03-30
10-K 2026-02-26 2025-12-31
8-K 2026-02-24 —
8-K 2026-02-23 2026-02-19
8-K 2026-01-06 —
8-K 2025-12-15 2025-12-12
8-K 2025-11-12 2025-11-10
8-K 2025-11-05 2025-11-04
8-K 2025-11-04 —
10-Q 2025-10-31 2025-09-30
8-K 2025-10-30 —
8-K 2025-08-26 —
10-Q 2025-08-06 2025-06-30
8-K 2025-08-05 —
8-K 2025-06-17 —
8-K 2025-05-12 2025-05-08
8-K 2025-05-02 —
10-Q 2025-05-02 2025-03-31
8-K 2025-04-16 2025-04-11
DEF 14A 2025-03-28 2025-05-08
8-K 2025-03-04 2025-02-28
10-K 2025-02-25 2024-12-31
8-K 2025-02-24 —
8-K 2024-12-11 2024-12-10
10-Q 2024-11-06 2024-09-30
8-K 2024-11-05 —
8-K 2024-08-12 2024-08-08
10-Q 2024-08-09 2024-06-30
8-K 2024-08-06 —
8-K 2024-07-29 —
8-K 2024-07-15 —
8-K 2024-07-01 —
8-K 2024-06-13 —
8-K 2024-05-29 2024-05-22
8-K 2024-05-13 2024-05-09
10-Q 2024-05-02 2024-03-31
Showing 1–50 of 121 filings
Key facts CIK 1262823 CUSIP 960413102 13F (30d) 10 filings 10 filers Visit website Investor relations