WLK WESTLAKE CORP

NEUTRAL Impact: 2/10 144
Horizon days Filed Mar 30, 2026 Processed 2mo ago SEC 0001950047-26-003083
Form 144 — notice of proposed sale of securities
Latest settled — T+20d ⚠ clustered
WLK ▼ -4.27% at T+20d
NEUTRAL call ✗ call lost -4.27% · α vs SPY -13.69% · entry $116.82 → $111.83
Next anchor: T+60d in 10d
Last close $88.50 (close Jun 12) · -24.24% from $116.82 entry
Entry anchored
Mar 30, 03:59 PM ET
via Databento tick
T+1d
-0.34%
call -0.34% · α -1.09%
$116.42
settled 3mo ago
T+5d
+3.36%
call +3.36% · α -0.59%
$120.74
settled 2mo ago
T+20d
-4.27%
call -4.27% · α -13.69%
$111.83
settled 7w ago
T+60d
call — · α —
in 10d

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.

Actionable Insight

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.

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

Documents Analyzed

This report is based on 3 SEC documents filed with EDGAR.

DocumentAccession Number
144 Filing (Primary)0001950047-26-003083
Document: 0001950047-26-003083-index.html0001950047-26-003083
Document: 0001950047-26-003083.txt0001950047-26-003083
10 reports for WLK
Performance horizon
100% Hit rate 3 of 3 directional calls best @ T+20▲ +17.21%Apr 14, 2026
Filters
Rows
Reports for WLK — sortable, filterable
Type Now
Jun 14, 2026
1d ago
Institutional Cluster
MIXED ★ 5/10
awaiting T+20
May 5, 2026
5w ago
8-K
BEARISH ★ 7/10
$104.29 $86.83▲ +16.74%▲ +21.70%$88.50 (+15.14%)
Apr 20, 2026
7w ago
8-K
NEUTRAL ★ 4/10
$115.44 $91.46▼ −20.77%▼ −25.69%$88.50 (−23.34%)
Apr 14, 2026
8w ago
8-K
BEARISH ★ 7/10
$117.84 $97.56▲ +17.21%▲ +23.51%$88.50 (+24.90%)
Apr 6, 2026
9w ago
8-K
NEUTRAL ★ 4/10
$119.51 $114.07▼ −4.55%▼ −13.53%$88.50 (−25.95%)
Apr 2, 2026
10w ago
8-K
NEUTRAL ★ 3/10
$119.21 $115.28▼ −3.30%▼ −13.17%$88.50 (−25.76%)
Apr 2, 2026
10w ago
DEFA14A
NEUTRAL ★ 3/10
$119.21 $115.28▼ −3.30%▼ −13.17%$88.50 (−25.76%)
Mar 30, 2026
10w ago
144
NEUTRAL ★ 2/10
$116.82 $111.83▼ −4.27%▼ −13.69%$88.50 (−24.24%)
Mar 27, 2026
11w ago
144
NEUTRAL ★ 3/10
$116.00 $110.07▼ −5.11%▼ −17.71%$88.50 (−23.71%)
Mar 27, 2026
11w ago
Insider Cluster
BEARISH ★ 6/10
$113.29 $110.64▲ +2.34%▲ +15.08%$88.50 (+21.88%)
Showing 10 of 10

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