← United States · Coverage record
US · SEC FORM 4
Westlake Chemical Partners LP
WLKP · NYSE · CIK 0001604665 · Basic Materials · Chemicals
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
5 Form 4 transaction lines observed in the same window
0 sales · 5 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
—
Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-08-27 · Gilson Jean-Marc.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.
Price performance
- 1M
- -3.8%
- 3M
- -3.8%
- 6M
- -3.9%
- 12M
- —
Volatility & liquidity
- Volatility
- 19.2%
- Beta
- —
- Avg daily value
- —
Valuation
- Market cap
- —
- P/E
- —
Fundamentals
- Profit margin
- 4.2%
- ROE
- —
- Industry
- Chemicals
Market data
Price data up to: 2026-10-04 · Price source: OpenBB/yfinance · From SEC filings: Profit margin · Fiscal year ended: 2025-12-31 · Status: PASS
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 138,343
- Previous report
- 133,662
- Avg daily volume
- 19,977
- Days to cover
- 6.9
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2025-08-27 | Gilson Jean-Marc | Purchase (P) | Common Units | 95 | USD 21.25 | USD 2,025 | SEC filing ↗ |
| 2025-08-21 | Gilson Jean-Marc | Purchase (P) | Common Units | 1,250 | USD 22.02 | USD 27,525 | SEC filing ↗ |
| 2025-08-20 | Gilson Jean-Marc | Purchase (P) | Common Units | 1,250 | USD 21.86 | USD 27,325 | SEC filing ↗ |
| 2025-08-15 | Gilson Jean-Marc | Purchase (P) | Common Units | 4,700 | USD 21.84 | USD 102,648 | SEC filing ↗ |
| 2025-05-29 | Gilson Jean-Marc | Purchase (P) | Common Units | 94 | USD 22.20 | USD 2,081 | SEC filing ↗ |
| 2025-02-25 | Gilson Jean-Marc | Purchase (P) | Common Units | 83 | USD 24.75 | USD 2,042 | SEC filing ↗ |
| 2024-11-27 | Gilson Jean-Marc | Purchase (P) | Common Units | 85 | USD 23.57 | USD 2,003 | SEC filing ↗ |
| 2024-08-29 | Gilson Jean-Marc | Purchase (P) | Common Units | 1,000 | USD 22.83 | USD 22,830 | SEC filing ↗ |
| 2024-08-28 | Gilson Jean-Marc | Purchase (P) | Common Units | 320 | USD 22.95 | USD 7,344 | SEC filing ↗ |
| 2024-08-28 | Gilson Jean-Marc | Purchase (P) | Common Units | 500 | USD 22.94 | USD 11,470 | SEC filing ↗ |
| 2024-08-27 | Gilson Jean-Marc | Purchase (P) | Common Units | 1,000 | USD 22.95 | USD 22,950 | SEC filing ↗ |
| 2024-08-26 | Gilson Jean-Marc | Purchase (P) | Common Units | 500 | USD 22.85 | USD 11,425 | SEC filing ↗ |
| 2024-08-23 | Gilson Jean-Marc | Purchase (P) | Common Units | 500 | USD 22.88 | USD 11,440 | SEC filing ↗ |
| 2024-08-22 | Gilson Jean-Marc | Purchase (P) | Common Units | 427 | USD 22.60 | USD 9,650 | SEC filing ↗ |
| 2024-08-12 | Kenner Andrew | Purchase (P) | Common Units | 2,692 | USD 22.63 | USD 60,920 | SEC filing ↗ |
Form 4 evidence
5 transaction lines in the latest 365-day window; 106 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-08-06 | WOELFEL RANDY | Option exercise / conversion (M) | Common Units | 5,005 | USD — | USD — | SEC filing ↗ |
| 2026-08-06 | WOELFEL RANDY | D (D) | Common Units | 5,005 | USD 21.35 | USD 106,857 | SEC filing ↗ |
| 2026-08-06 | Friel Lisa A. | Option exercise / conversion (M) | Common Units | 5,005 | USD — | USD — | SEC filing ↗ |
Show recent Form 4 evidence (5 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-08-06 | WOELFEL RANDY | Option exercise / conversion (M) | Common Units | 5,005 | USD — | USD — | SEC filing ↗ |
| 2026-08-06 | WOELFEL RANDY | D (D) | Common Units | 5,005 | USD 21.35 | USD 106,857 | SEC filing ↗ |
| 2026-08-06 | Friel Lisa A. | Option exercise / conversion (M) | Common Units | 5,005 | USD — | USD — | SEC filing ↗ |
| 2026-08-06 | Friel Lisa A. | D (D) | Common Units | 2,502 | USD 21.35 | USD 53,418 | SEC filing ↗ |
| 2026-08-06 | FINLEY G STEPHEN | Option exercise / conversion (M) | Common Units | 5,005 | USD — | USD — | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | WLKP |
| CIK | 0001604665 |
| Sector | Basic Materials |
| Industry | Chemicals Yahoo Finance |
| SEC SIC | 2860 Industrial Organic Chemicals |
| Exchange | NYSE |
Data coverage
| Local Form 4 history | 106 transaction lines from 2020-03-10 to 2026-08-06 66 P purchase lines · 5 S sale lines · 35 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.