Only open-market buys / sells (codes P/S) are a conviction signal; grants, option exercises, tax-withholding, and gifts are compensation mechanics, shown but greyed. The trailing 12-month tallies run to today but the store covers filings through 2026-06-30 only (SEC bulk data sets publish quarterly), so recent activity may be absent.
| Date | Insider | Role | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-19 | NIELSEN STEVEN E | Director | +Grant | 5,290 | — | — |
| 2026-05-19 | DeMaria Dustin | Director | +Grant | 7,736 | — | — |
| 2026-05-19 | Haller Karen S | Director | +Grant | 4,067 | — | — |
| 2026-05-19 | Dill Julie | Director | +Grant | 4,067 | — | — |
| 2026-05-19 | Krummel Christopher A | Director | +Grant | 4,067 | — | — |
| 2026-05-19 | Patton Charles R. | Director | +Grant | 4,067 | — | — |
| 2026-05-19 | MARIUCCI ANNE L | Director | +Grant | 4,067 | — | — |
| 2026-05-19 | Evans Andrew W | Director | +Grant | 4,067 | — | — |
| 2026-05-18 | Haller Karen S | Director | +Exercise | 7,338 | — | — |
| 2026-05-18 | Dill Julie | Director | +Exercise | 7,338 | — | — |
| 2026-05-18 | Krummel Christopher A | Director | +Exercise | 7,338 | — | — |
| 2026-05-18 | Patton Charles R. | Director | +Exercise | 7,338 | — | — |
| 2026-05-18 | MARIUCCI ANNE L | Director | +Exercise | 7,338 | — | — |
| 2026-05-18 | Evans Andrew W | Director | +Exercise | 7,338 | — | — |
| 2026-02-25 | Izenstark Gregory A. | Officer | −Tax w/h | 2,868 | $30.96 | $88,793 |
| 2026-02-25 | Chilton Kendra | Officer | −Tax w/h | 454 | $30.96 | $14,056 |
| 2026-02-25 | Wilcock Jason S. | Officer | −Tax w/h | 1,984 | $30.96 | $61,425 |
| 2026-02-25 | Brown Christian | Director,Officer | −Tax w/h | 4,893 | $30.96 | $151,487 |
| 2026-02-17 | Wilcock Jason S. | Officer | +Grant | 9,455 | — | — |
| 2026-02-17 | Wilcock Jason S. | Officer | +Exercise | 10,586 | — | — |
| 2026-02-17 | Brown Christian | Director,Officer | +Exercise | 31,417 | — | — |
| 2026-02-17 | Brown Christian | Director,Officer | +Grant | 45,683 | — | — |
| 2026-02-17 | Izenstark Gregory A. | Officer | +Exercise | 16,111 | — | — |
| 2026-02-17 | Izenstark Gregory A. | Officer | +Grant | 11,309 | — | — |
| 2026-02-17 | Chilton Kendra | Officer | +Exercise | 2,186 | — | — |
| 2026-02-17 | Chilton Kendra | Officer | +Grant | 3,114 | — | — |
| 2026-01-30 | Connell James W. Jr. | Officer | −Tax w/h | 5,280 | $27.83 | $146,942 |
| 2026-01-30 | Connell James W. Jr. | Officer | +Exercise | 19,011 | — | — |
| 2025-12-04 | Brown Christian | Director,Officer | −Sell | 7,108 | $24.51 | $174,217 |
| 2025-12-03 | Brown Christian | Director,Officer | +Exercise | 29,197 | — | — |
| 2025-11-14 | ICAHN CARL C | TenPercentOwner | +Buy | 3,488,372 | $21.50 | $75M |
| 2025-09-05 | Southwest Gas Holdings, Inc. | TenPercentOwner | −Sell | 27,362,210 | $19.60 | $536M |
| 2025-08-11 | Southwest Gas Holdings, Inc. | TenPercentOwner | −Sell | 18,823,500 | $19.50 | $367M |
| 2025-07-08 | Southwest Gas Holdings, Inc. | TenPercentOwner | −Sell | 1,060,240 | $20.75 | $22M |
| 2025-06-18 | Southwest Gas Holdings, Inc. | TenPercentOwner | −Sell | 11,212,500 | $20.75 | $233M |
| 2025-05-22 | Southwest Gas Holdings, Inc. | TenPercentOwner | −Sell | 13,207,142 | $17.50 | $231M |
| 2025-05-12 | Connell James W. Jr. | Officer | −Tax w/h | 1,600 | $19.53 | $31,248 |
| 2025-05-12 | Connell James W. Jr. | Officer | +Exercise | 6,060 | — | — |
| 2025-05-12 | Chilton Kendra | Officer | +Exercise | 5,050 | — | — |
| 2025-05-12 | Chilton Kendra | Officer | −Tax w/h | 1,333 | $19.53 | $26,033 |
| 2025-05-12 | Izenstark Gregory A. | Officer | +Exercise | 40,404 | — | — |
| 2025-05-12 | Izenstark Gregory A. | Officer | −Tax w/h | 13,071 | $19.53 | $255,277 |
| 2025-05-12 | Wilcock Jason S. | Officer | +Exercise | 30,303 | — | — |
| 2025-05-12 | Wilcock Jason S. | Officer | −Tax w/h | 8,779 | $19.53 | $171,454 |
| 2025-04-30 | Dill Julie | Director | +Exercise | 6,904 | — | — |
| 2025-04-30 | Evans Andrew W | Director | +Exercise | 6,904 | — | — |
| 2025-04-30 | Haller Karen S | Director | +Exercise | 6,904 | — | — |
| 2025-04-30 | Patton Charles R. | Director | +Exercise | 6,904 | — | — |
| 2025-04-30 | MARIUCCI ANNE L | Director | +Exercise | 6,904 | — | — |
| 2025-04-30 | Krummel Christopher A | Director | +Exercise | 6,904 | — | — |
| 2025-03-28 | Dill Julie | Director | +Buy | 500 | $16.57 | $8,285 |
| 2025-03-26 | Dill Julie | Director | +Buy | 500 | $16.63 | $8,315 |
| 2024-07-31 | Fehrman William | Director | +Buy | 20,000 | $16.50 | $330,000 |
| 2024-04-22 | MARIUCCI ANNE L | Director | +Buy | 71,400 | $21.00 | $1M |
| 2024-04-22 | Haller Karen S | Director | +Buy | 12,000 | $21.00 | $252,000 |
| 2024-04-22 | Fehrman William | Director,Officer | +Buy | 25,000 | $21.00 | $525,000 |
| 2024-04-22 | Wilcock Jason S. | Officer | +Buy | 5,000 | $21.00 | $105,000 |
| 2024-04-22 | Patton Charles R. | Director | +Buy | 11,000 | $21.00 | $231,000 |
| 2024-04-22 | Krummel Christopher A | Director | +Buy | 2,500 | $21.00 | $52,500 |
| 2024-04-22 | Dill Julie | Director | +Buy | 5,000 | $21.00 | $105,000 |
| 2024-04-22 | Izenstark Gregory A. | Officer | +Buy | 5,250 | $21.00 | $110,250 |
Source: the SEC bulk insider (Form 3/4/5) data sets — non-derivative transactions in the issuer's common stock, most recent first, covering filings through 2026-06-30. Insiders file within 2 business days of a transaction, but the bulk sets publish quarterly, so this store lags live filings; option/derivative lines are excluded. Codes: P buy · S sell · A grant · M/X/C exercise · F tax · G gift.
Model-derived estimate for research. See the Disclaimer.
