Westlake Corp.
Congress has disclosed 3 buys and 3 sells of WLK (Westlake Corp.) in official financial disclosures, each linked to its original filing. A transparency record — not investment advice.
Activity Congressional Activity
Fundamentals · FY2026 Valuation
Standard valuation multiples from SEC-reported GAAP financials (trailing twelve months), each compared to the median for —. We use reported GAAP, not forward or adjusted earnings, so our figures can sit higher than sites that do — especially for companies with falling profit. Relative context — not a target price or investment advice.
how it's calculated
how it's calculated
6 trades Recent Congressional Trades
Two things to watch per trade: the disclosure lag (how many days passed before the trade was made public) and the price move in that window (how the stock moved during those non-public days). A sell followed by a price drop, or a buy followed by a rise, means well-timed trading — visible here in the open. Note: the Score measures how notable a trade is, not whether it made money — the price move is shown for context and isn't part of it.
| Politician | Chamber | Type | Owner | Date | Disclosure lag | Price move in that window | Amount | Score | Source |
|---|---|---|---|---|---|---|---|---|---|
| Susie Lee | House | SELL | Joint | 2021-06-10 | 21 days | — | $1K–$15K 0.2% of NW |
22.3 | ↗ filing |
| Peter Meijer | House | SELL | Self | 2021-02-16 | 3 days | — | $1K–$15K | 75.9 | ↗ filing |
| Susie Lee | House | BUY | Joint | 2020-12-16 | 16 days | — | $1K–$15K 0.2% of NW |
40.4 | ↗ filing |
| Susie Lee | House | BUY | Joint | 2020-12-10 | 22 days | — | $1K–$15K 0.2% of NW |
75.9 | ↗ filing |
| James Comer | House | SELL | Self | 2020-08-06 | 18 days | — | $1K–$15K 0.1% of NW |
75.9 | ↗ filing |
| Thomas Rooney | House | BUY | Self | 2015-11-17 | 30 days | — | $15K–$50K | 90.9 | ↗ filing |
Corporate insiders · SEC Form 4 Insider Activity
What the company's own officers and directors did in WLK — open-market purchases and sales from SEC Form 4 filings (option exercises, grants and tax withholding are excluded). This is context for the congressional activity above, never a buy/sell signal, and the two datasets are kept separate on purpose. Does convergence mean anything? →
Of the congressional trades in WLK, 0 coincided with corporate insiders moving the same way within 60 days, and 0 with insiders moving the opposite way. This is co-occurrence only — whether it carries any edge is tested honestly on the convergence page.
| Date | Insider | Role | Type | Size | Source |
|---|---|---|---|---|---|
| 2026-08-11 | Chao Albert | Director | SELL | $597K | ↗ EDGAR |
| 2026-08-11 | Chao Albert | Director | SELL | $2.5M | ↗ EDGAR |
| 2026-03-27 | Bender Mark Steven | C-suite | SELL | $1.8M | ↗ EDGAR |
| 2026-03-27 | Buesinger Robert F. | Other | SELL | $461K | ↗ EDGAR |
| 2026-02-27 | Bender Mark Steven | C-suite | SELL | $1.7M | ↗ EDGAR |
| 2026-02-27 | Bender Mark Steven | C-suite | SELL | $43K | ↗ EDGAR |
| 2025-12-22 | Chao Albert | Director | SELL | $707K | ↗ EDGAR |
| 2025-12-22 | Chao Albert | Director | SELL | $2.3M | ↗ EDGAR |
| 2025-12-22 | Chao Albert | Director | SELL | $39K | ↗ EDGAR |
| 2025-05-27 | Buesinger Robert F. | Other | SELL | $6K | ↗ EDGAR |
| 2025-04-22 | Buesinger Robert F. | Other | BUY | $8K | ↗ EDGAR |
| 2024-11-29 | Chao David Tsung-Hung | Director | SELL | $226K | ↗ EDGAR |
| 2024-11-22 | Chao David Tsung-Hung | Director | SELL | $228K | ↗ EDGAR |
| 2024-05-09 | Buesinger Robert F. | Other | SELL | $555K | ↗ EDGAR |
| 2024-05-03 | Bender Mark Steven | C-suite | SELL | $753K | ↗ EDGAR |
| 2024-03-15 | Buesinger Robert F. | Other | SELL | $560K | ↗ EDGAR |
| 2024-03-13 | Buesinger Robert F. | Other | SELL | $18K | ↗ EDGAR |
| 2024-03-06 | Bender Mark Steven | C-suite | SELL | $677K | ↗ EDGAR |
| 2024-02-26 | Bender Mark Steven | C-suite | SELL | $668K | ↗ EDGAR |
| 2023-11-15 | Buesinger Robert F. | Other | SELL | $550K | ↗ EDGAR |
| 2023-08-23 | Chao David Tsung-Hung | Director | SELL | $131K | ↗ EDGAR |
Combined timeline — Congress & insiders
Both sets of trades on one timeline, newest first, so you can see when they lined up. Congress vs ◆ insider.
| Date | Who | Type | Size | |
|---|---|---|---|---|
| ◆ insider | 2026-08-11 | Chao Albert Director | SELL | $597K |
| ◆ insider | 2026-08-11 | Chao Albert Director | SELL | $2.5M |
| ◆ insider | 2026-03-27 | Bender Mark Steven C-suite | SELL | $1.8M |
| ◆ insider | 2026-03-27 | Buesinger Robert F. Other | SELL | $461K |
| ◆ insider | 2026-02-27 | Bender Mark Steven C-suite | SELL | $1.7M |
| ◆ insider | 2026-02-27 | Bender Mark Steven C-suite | SELL | $43K |
| ◆ insider | 2025-12-22 | Chao Albert Director | SELL | $707K |
| ◆ insider | 2025-12-22 | Chao Albert Director | SELL | $2.3M |
| ◆ insider | 2025-12-22 | Chao Albert Director | SELL | $39K |
| ◆ insider | 2025-05-27 | Buesinger Robert F. Other | SELL | $6K |
| ◆ insider | 2025-04-22 | Buesinger Robert F. Other | BUY | $8K |
| ◆ insider | 2024-11-29 | Chao David Tsung-Hung Director | SELL | $226K |
| ◆ insider | 2024-11-22 | Chao David Tsung-Hung Director | SELL | $228K |
| ◆ insider | 2024-05-09 | Buesinger Robert F. Other | SELL | $555K |
| ◆ insider | 2024-05-03 | Bender Mark Steven C-suite | SELL | $753K |
| ◆ insider | 2024-03-15 | Buesinger Robert F. Other | SELL | $560K |
| ◆ insider | 2024-03-13 | Buesinger Robert F. Other | SELL | $18K |
| ◆ insider | 2024-03-06 | Bender Mark Steven C-suite | SELL | $677K |
| ◆ insider | 2024-02-26 | Bender Mark Steven C-suite | SELL | $668K |
| ◆ insider | 2023-11-15 | Buesinger Robert F. Other | SELL | $550K |
| ◆ insider | 2023-08-23 | Chao David Tsung-Hung Director | SELL | $131K |
| Congress | 2021-06-10 | Susie Lee | SELL | $1K–$15K |
| Congress | 2021-02-16 | Peter Meijer | SELL | $1K–$15K |
| Congress | 2020-12-16 | Susie Lee | BUY | $1K–$15K |
FAQ Common questions
How much has Congress traded WLK?
3 disclosed buys and 3 sells of WLK (Westlake Corp.) appear in official congressional financial disclosures.
Is it legal for members of Congress to trade WLK?
Members of Congress may trade stocks but must disclose it under the STOCK Act. QuantCapitol tracks those public disclosures for transparency — nothing here is an accusation of wrongdoing or investment advice.
Where does this data come from?
Official US House Clerk and Senate electronic financial disclosures. Every trade links back to its original filing so you can verify it yourself.