Legal Insider Trading Data | Free and Professional Subscription Services | Insider Insights urn:uuid:d2c81d04-b9f9-436b-b7e2-db9735e774e7 2026-05-12T20:58:54-04:00 Jonathan Moreland Profit from legal insider trading. InsiderInsights.com provides free insider trading data tools and resources, and professional grade subscription based real time Form 4 data, analysis and services WLK: POWERS BRIAN JOHN (VP) Filed a Form 3, Becoming a Registered Insider at WESTLAKE CORP With Initial Holdings of 0 urn:uuid:0f5f0745-1bb6-41c2-3cfd-a9559daa1ed1 2026-04-02T15:13:24-04:00 WLK: BUESINGER ROBERT F (VP) Sold (S) 4k Shares of WESTLAKE CORP for $115.25 on 3/27 urn:uuid:05832e00-f81a-e837-48f8-d0369db0728b 2026-03-31T09:48:51-04:00 WLK: BENDER MARK STEVEN (VP,CFO) Sold (S) 16,413 Shares of WESTLAKE CORP for $112.53 on 3/27 urn:uuid:8fc7389a-5cc5-4d44-0697-87fe80397ce5 2026-03-30T16:10:11-04:00 WLK: BENDER MARK STEVEN (VP,CFO) Disposed (JS) 1,171 Shares of WESTLAKE CORP for $104.96 on 2/16 urn:uuid:2169c684-d40d-48ba-95b6-b942378895c1 2026-03-06T15:16:14-05:00 WLK: BENDER MARK STEVEN (VP,CFO) Exercised 12,693 Options (OE) of WESTLAKE CORP for $65.81-$86.54 on 2/27, and Sold Them All urn:uuid:869931c5-5acb-73e6-539e-26d99d4eb363 2026-03-02T11:35:03-05:00 WLK: PATEL BHAVESH V (DIR) Filed a Form 3, Becoming a Registered Insider at WESTLAKE CORP With Initial Holdings of 0 urn:uuid:6d95e1f5-2335-c28d-6471-f7e22fc33dcc 2026-02-23T19:00:02-05:00 WLK: SZWEJBKA SCOTT THOMAS (VP) Acquired (JB) 365 Shares of WESTLAKE CORP for $0.00 on 2/19 urn:uuid:23b02392-c8cc-d131-7fa0-faf8d4f6b774 2026-02-23T14:45:33-05:00 WLK: SZWEJBKA SCOTT THOMAS (VP) Disposed (JS) 91 Shares of WESTLAKE CORP for $94.10 on 2/20 urn:uuid:2772ee0a-5c78-126c-5aba-08b1c5b459c3 2026-02-23T14:45:33-05:00