Ronald B Stark
CIK 1329875 · View on SEC EDGAR ↗
Insider
First SEC filing: June 5, 2026 · Latest: June 5, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 27 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 4, 2026 | MWH | D | 1,122 | — | — | 80,589 Direct | -1.37% | Disposed | (price as of 2026-08-20) |
| June 1, 2026 | MWH | D | 7,482 | — | — | 81,711 Direct | -8.39% | Disposed | (price as of 2026-08-20) |
| Feb. 2, 2015 | NRG | A | 90 | — | — | 23,765 Direct | +0.38% | Acquired | (price as of 2026-08-20) |
| Jan. 3, 2015 | NRG | F | 889 | — | — | 24,295 Direct | -3.53% | Disposed | (price as of 2026-08-20) |
| Jan. 3, 2015 | NRG | M | 4,300 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-20) |
| Jan. 3, 2015 | NRG | F | 620 | — | — | 23,675 Direct | -2.55% | Disposed | (price as of 2026-08-20) |
| Jan. 3, 2015 | NRG | F | 889 | — | — | 24,295 Direct | -3.53% | Disposed | (price as of 2026-08-20) |
| Jan. 3, 2015 | NRG | F | 2,065 | — | — | 25,184 Direct | -7.58% | Disposed | (price as of 2026-08-20) |
| Jan. 3, 2015 | NRG | M | 6,622 | — | — | 27,249 Direct | +32.10% | Acquired | (price as of 2026-08-20) |
| Jan. 2, 2015 | NRG | M | 5,200 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-20) |
| Jan. 2, 2015 | NRG | M | 9,000 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-20) |
| Jan. 2, 2015 | NRG | A | 5,337 | — | — | 20,627 Direct | +34.91% | Acquired | (price as of 2026-08-20) |
| Jan. 2, 2015 | NRG | M | 461 | $23.64 | $10,898 | 15,290 Direct | +3.11% | Acquired | 406.9% (price as of 2026-08-20) |
| Nov. 3, 2014 | NRG | A | 55 | — | — | 14,829 Direct | +0.37% | Acquired | (price as of 2026-08-20) |
| Aug. 1, 2014 | NRG | A | 54 | — | — | 14,774 Direct | +0.37% | Acquired | (price as of 2026-08-20) |
| May 1, 2014 | NRG | A | 49 | — | — | 14,720 Direct | +0.33% | Acquired | (price as of 2026-08-20) |
| Feb. 3, 2014 | NRG | A | 51 | — | — | 14,671 Direct | +0.35% | Acquired | (price as of 2026-08-20) |
| Jan. 3, 2014 | NRG | M | 1,500 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-20) |
| Jan. 3, 2014 | NRG | F | 642 | — | — | 14,620 Direct | -4.21% | Disposed | (price as of 2026-08-20) |
| Jan. 3, 2014 | NRG | F | 820 | — | — | 15,262 Direct | -5.10% | Disposed | (price as of 2026-08-20) |
| Jan. 3, 2014 | NRG | M | 2,295 | — | — | 16,082 Direct | +16.65% | Acquired | (price as of 2026-08-20) |
| Jan. 2, 2014 | NRG | A | 5,047 | — | — | 13,787 Direct | +57.75% | Acquired | (price as of 2026-08-20) |
| Nov. 1, 2013 | NRG | A | 28 | — | — | 8,740 Direct | +0.32% | Acquired | (price as of 2026-08-20) |
| Aug. 1, 2013 | NRG | A | 29 | — | — | 8,712 Direct | +0.33% | Acquired | (price as of 2026-08-20) |
| Jan. 4, 2013 | NRG | F | 470 | — | — | 8,628 Direct | -5.17% | Disposed | (price as of 2026-08-20) |
| Jan. 2, 2013 | NRG | A | 4,200 | — | — | 4,200 Direct | — | Acquired | (price as of 2026-08-20) |
| Jan. 2, 2013 | NRG | A | 2,500 | — | — | 9,098 Direct | +37.89% | Acquired | (price as of 2026-08-20) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| June 4, 2026 | MWH | SOLV Energy Management Holdings LP Units | Class A Common Stock | — | — | 1,122 | Disposed |
| June 1, 2026 | MWH | SOLV Energy Management Holdings LP Units | Class A Common Stock | — | — | 7,482 | Disposed |
| Jan. 3, 2015 | NRG | Market Stock Units | Common Stock, par value $.01 per share (8,600) | — | Jan. 2, 2015 | 4,300 | Disposed |
| Jan. 2, 2015 | NRG | Non-Qualified Stock Options | Common Stock, par value $.01 per share (5,200) | $23.64 | Jan. 2, 2015 | 5,200 | Disposed |
| Jan. 2, 2015 | NRG | Non-Qualified Stock Options | Common Stock, par value $.01 per share (9,000) | $23.64 | Jan. 2, 2015 | 9,000 | Disposed |
| Jan. 3, 2014 | NRG | Performance Units | Common Stock, par value .01 per share (3,000) | — | Jan. 3, 2014 | 1,500 | Disposed |
| Jan. 2, 2013 | NRG | Market Stock Units | Common Stock, par value $.01 per share | — | Jan. 2, 2016 | 4,200 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 10 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Feb. 11, 2026 | MWH | Class A common stock | 200 | Direct |
| Feb. 11, 2026 | MWH | Stock Options (Right to Buy)→ Class A common stock (44,053) | 44,053 | Direct |
| Feb. 11, 2026 | MWH | SOLV Energy Management Holdings LP Units→ Class A common stock (89,193) | 89,193 | Direct |
| March 13, 2012 | NRG | Common Stock, par value $.01 per share | 6,598 | Direct |
| March 13, 2012 | NRG | Non-Qualified Stock Options→ Common Stock, par value $.01 per share (5,200) | 5,200 | Direct |
| March 13, 2012 | NRG | Non-Qualified Stock Options→ Common Stock, par value $.01 per share (2,800) | 2,800 | Direct |
| March 13, 2012 | NRG | Non-Qualified Stock Options→ Common Stock, par value $.01 per share (3,500) | 3,500 | Direct |
| March 13, 2012 | NRG | Performance Units→ Common Stock, par value $.01 | — | Direct |
| March 13, 2012 | NRG | Performance Units→ Common Stock, par value $.01 per share | — | Direct |
| March 13, 2012 | NRG | Market Stock Units→ Common Stock, par value $.01 per share (8,600) | 8,600 | Direct |