144 ·Filed Mar 30, 2026
Form 144 — notice of proposed sale of securities
Actionable Insight • Neutral
Monitor for actual sale execution via Form 4 filings; however, this small-scale proposed sale by a non-CEO officer is unlikely to signal material concern or move the stock meaningfully.
Final — all horizons settled through T+60d ⚠ clustered
WLK ▼ -34.41% at T+60d
NEUTRAL call ✗ call lost -34.41% · α vs SPY -46.79% · entry $116.82 → $76.62
T+1d
-0.34%
call -0.34% · α -1.09%
$116.42
settled 6mo ago
T+5d
+3.36%
call +3.36% · α -0.59%
$120.74
settled 6mo ago
T+20d
-4.27%
call -4.27% · α -13.69%
$111.83
settled 5mo ago
T+60d
-34.41%
call -34.41% · α -46.79%
$76.62
settled 3mo ago
Price Chart
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Executive Summary
Robert Buesinger, an officer of Westlake Corp, filed a Form 144 to notify intent to sell up to 4,000 shares of common stock, valued at approximately $461,000 based on current market prices. This represents a routine, relatively small insider sale, consistent with recent modest selling activity by insiders.
Key Facts
- Reporting owner: Robert Buesinger, Officer of Westlake Corp
- Number of shares proposed for sale: 4,000
- Approximate dollar value: $461,000 (based on $115.25/share)
- Shares are from performance shares (890) and restricted stock (3,110) awards granted in 2024
- Filing date: March 30, 2026
Financial Impact
$461,000 in potential share sales
insider ownershipshare float
Risk Factors
- Potential perception of insider lack of confidence if sales accelerate
- Increased selling pressure if additional insiders file similar notices
Market Snapshot
Exchange
NYSE
Sector
Industrial Organic Chemicals
Investment Themes
Biotech & Drug Discovery
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001950047-26-003083 |
| Document: 0001950047-26-003083-index.html | 0001950047-26-003083 |
| Document: 0001950047-26-003083.txt | 0001950047-26-003083 |
15 reports for WLK
100% Hit rate best @ T+60▲ +36.80%
Filters
Rows
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 31, 2026 4w ago | 8-K | $74.23 $62.31 | ▼ −16.06% | ▼ −16.38% | $63.50 (−14.46%) |
Aug 14, 2026 6w ago | Press Release | $78.21 $70.02 | ▼ −10.47% | ▼ −8.49% | $63.50 (−18.81%) |
Aug 4, 2026 8w ago | 8-K | $80.63 $74.23 | ▼ −7.94% | ▼ −6.70% | $63.50 (−21.25%) |
Jul 21, 2026 10w ago | Press Release | $76.22 $77.52 | ▼ −1.71% | ▲ +0.86% | $63.50 (+16.69%) |
Jun 15, 2026 15w ago | 8-K | $84.33 $77.04 | ▼ −8.64% | ▼ −8.84% | $63.50 (−24.70%) |
Jun 14, 2026 15w ago | Institutional Cluster | $87.45 $76.07 | ▼ −13.01% | ▼ −12.26% | $63.50 (−27.39%) |
May 5, 2026 21w ago | 8-K | $104.29 $86.83 | ▲ +16.74% | ▲ +21.70% | $63.50 (+39.11%) |
Apr 20, 2026 23w ago | 8-K | $115.44 $91.46 | ▼ −20.77% | ▼ −25.69% | $63.50 (−44.99%) |
Apr 14, 2026 24w ago | 8-K | $117.84 $97.56 | ▲ +17.21% | ▲ +23.51% | $63.50 (+46.11%) |
Apr 6, 2026 25w ago | 8-K | $119.51 $114.07 | ▼ −4.55% | ▼ −13.53% | $63.50 (−46.87%) |
Showing 10 of 15
US Market Status
Market Closed — Opens Mon (64h 10m)
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