Ron Hadar
Insider
First SEC filing: Feb. 16, 2005 · Latest: Feb. 16, 2005
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 6, 2007 | MKSI | M | 1,563 | · | · | 35,250 Direct | -4.25% | Disposed | (price as of 2026-10-02) |
| June 6, 2007 | MKSI | M | 750 | · | · | 36,813 Direct | -2.00% | Disposed | (price as of 2026-10-02) |
| June 6, 2007 | MKSI | S | 602 | $26.85 | $16,164 | 12,000 Direct | -4.78% | Disposed | 939.7% (price as of 2026-10-02) |
| June 6, 2007 | MKSI | S | 1,563 | $26.86 | $41,982 | 12,602 Direct | -11.03% | Disposed | 939.3% (price as of 2026-10-02) |
| June 6, 2007 | MKSI | S | 750 | $26.86 | $20,145 | 14,165 Direct | -5.03% | Disposed | 939.3% (price as of 2026-10-02) |
| June 6, 2007 | MKSI | M | 1,563 | $16.41 | $25,649 | 14,915 Direct | +11.71% | Acquired | 1601.1% (price as of 2026-10-02) |
| June 6, 2007 | MKSI | M | 750 | $14.45 | $10,838 | 13,352 Direct | +5.95% | Acquired | 1831.8% (price as of 2026-10-02) |
| June 6, 2007 | MKSI | S | 1,414 | $26.88 | $38,008 | 12,602 Direct | -10.09% | Disposed | 938.5% (price as of 2026-10-02) |
| April 26, 2007 | MKSI | S 10b5-1 | 10,000 | $28.00 | $280,000 | 13,414 Direct | -42.71% | Disposed | 897.0% (price as of 2026-10-02) |
| April 20, 2007 | MKSI | S 10b5-1 | 10,000 | $27.50 | $275,000 | 23,414 Direct | -29.93% | Disposed | 915.1% (price as of 2026-10-02) |
| April 16, 2007 | MKSI | S 10b5-1 | 10,000 | $27.00 | $270,000 | 33,414 Direct | -23.03% | Disposed | 933.9% (price as of 2026-10-02) |
| March 8, 2007 | MKSI | M 10b5-1 | 10,006 | · | · | 37,563 Direct | -21.03% | Disposed | (price as of 2026-10-02) |
| March 8, 2007 | MKSI | M 10b5-1 | 931 | · | · | 47,569 Direct | -1.92% | Disposed | (price as of 2026-10-02) |
| March 8, 2007 | MKSI | M 10b5-1 | 7,500 | · | · | 48,500 Direct | -13.39% | Disposed | (price as of 2026-10-02) |
| March 8, 2007 | MKSI | M 10b5-1 | 8,000 | · | · | 56,000 Direct | -12.50% | Disposed | (price as of 2026-10-02) |
| March 8, 2007 | MKSI | S 10b5-1 | 10,006 | $24.00 | $240,144 | 43,414 Direct | -18.73% | Disposed | 1063.1% (price as of 2026-10-02) |
| March 8, 2007 | MKSI | S 10b5-1 | 931 | $24.01 | $22,353 | 53,420 Direct | -1.71% | Disposed | 1062.6% (price as of 2026-10-02) |
| March 8, 2007 | MKSI | S 10b5-1 | 7,500 | $24.00 | $180,000 | 54,351 Direct | -12.13% | Disposed | 1063.1% (price as of 2026-10-02) |
| March 8, 2007 | MKSI | S 10b5-1 | 8,000 | $24.00 | $192,000 | 61,851 Direct | -11.45% | Disposed | 1063.1% (price as of 2026-10-02) |
| March 8, 2007 | MKSI | M 10b5-1 | 10,006 | $16.41 | $164,198 | 69,851 Direct | +16.72% | Acquired | 1601.1% (price as of 2026-10-02) |
| March 8, 2007 | MKSI | M 10b5-1 | 931 | $16.41 | $15,278 | 59,845 Direct | +1.58% | Acquired | 1601.1% (price as of 2026-10-02) |
| March 8, 2007 | MKSI | M 10b5-1 | 7,500 | $14.45 | $108,375 | 58,914 Direct | +14.59% | Acquired | 1831.8% (price as of 2026-10-02) |
| March 8, 2007 | MKSI | M 10b5-1 | 8,000 | $16.88 | $135,040 | 51,414 Direct | +18.43% | Acquired | 1553.7% (price as of 2026-10-02) |
| March 1, 2007 | MKSI | A | 12,000 | · | · | 12,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 9, 2006 | MKSI | S 10b5-1 | 1,209 | $24.90 | $30,104 | 43,414 Direct | -2.71% | Disposed | 1021.1% (price as of 2026-10-02) |
| May 9, 2006 | MKSI | S 10b5-1 | 5,000 | $24.80 | $124,000 | 44,623 Direct | -10.08% | Disposed | 1025.6% (price as of 2026-10-02) |
| March 15, 2006 | MKSI | S 10b5-1 | 2,102 | $23.30 | $48,977 | 49,623 Direct | -4.06% | Disposed | 1098.1% (price as of 2026-10-02) |
| March 15, 2006 | MKSI | S 10b5-1 | 10,000 | $23.05 | $230,500 | 51,725 Direct | -16.20% | Disposed | 1111.1% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 5,000 | $23.20 | $116,000 | 61,725 Direct | -7.49% | Disposed | 1103.2% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 300 | $23.22 | $6,966 | 66,725 Direct | -0.45% | Disposed | 1102.2% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 600 | $23.21 | $13,926 | 67,025 Direct | -0.89% | Disposed | 1102.7% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 100 | $23.20 | $2,320 | 67,625 Direct | -0.15% | Disposed | 1103.2% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 400 | $23.19 | $9,276 | 67,725 Direct | -0.59% | Disposed | 1103.8% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 200 | $23.18 | $4,636 | 68,125 Direct | -0.29% | Disposed | 1104.3% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 500 | $23.17 | $11,585 | 68,325 Direct | -0.73% | Disposed | 1104.8% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 400 | $23.16 | $9,264 | 68,825 Direct | -0.58% | Disposed | 1105.3% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 2,500 | $23.15 | $57,875 | 69,225 Direct | -3.49% | Disposed | 1105.8% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 400 | $22.67 | $9,068 | 71,725 Direct | -0.55% | Disposed | 1131.4% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 1,200 | $22.66 | $27,192 | 72,125 Direct | -1.64% | Disposed | 1131.9% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 3,400 | $22.65 | $77,010 | 73,325 Direct | -4.43% | Disposed | 1132.5% (price as of 2026-10-02) |
| March 14, 2006 | MKSI | S 10b5-1 | 5,000 | $22.80 | $114,000 | 76,725 Direct | -6.12% | Disposed | 1124.3% (price as of 2026-10-02) |
| March 13, 2006 | MKSI | S 10b5-1 | 5,000 | $22.20 | $111,000 | 81,725 Direct | -5.77% | Disposed | 1157.4% (price as of 2026-10-02) |
| March 6, 2006 | MKSI | S | 5,000 | $22.45 | $112,250 | 86,725 Direct | -5.45% | Disposed | 1143.4% (price as of 2026-10-02) |
| March 3, 2006 | MKSI | S | 5,000 | $22.70 | $113,500 | 91,725 Direct | -5.17% | Disposed | 1129.7% (price as of 2026-10-02) |
| March 3, 2006 | MKSI | S | 5,000 | $22.60 | $113,000 | 96,725 Direct | -4.92% | Disposed | 1135.2% (price as of 2026-10-02) |
| March 1, 2006 | MKSI | S 10b5-1 | 425 | $22.98 | $9,766 | 101,725 Direct | -0.42% | Disposed | 1114.8% (price as of 2026-10-02) |
| March 1, 2006 | MKSI | S 10b5-1 | 200 | $22.97 | $4,594 | 102,150 Direct | -0.20% | Disposed | 1115.3% (price as of 2026-10-02) |
| March 1, 2006 | MKSI | S 10b5-1 | 700 | $22.96 | $16,072 | 102,350 Direct | -0.68% | Disposed | 1115.8% (price as of 2026-10-02) |
| March 1, 2006 | MKSI | S 10b5-1 | 1,894 | $22.95 | $43,467 | 103,050 Direct | -1.80% | Disposed | 1116.3% (price as of 2026-10-02) |
| March 1, 2006 | MKSI | S 10b5-1 | 200 | $22.94 | $4,588 | 104,944 Direct | -0.19% | Disposed | 1116.9% (price as of 2026-10-02) |
| March 1, 2006 | MKSI | S 10b5-1 | 200 | $22.93 | $4,586 | 105,144 Direct | -0.19% | Disposed | 1117.4% (price as of 2026-10-02) |
| March 1, 2006 | MKSI | S 10b5-1 | 926 | $22.92 | $21,224 | 105,344 Direct | -0.87% | Disposed | 1117.9% (price as of 2026-10-02) |
| March 1, 2006 | MKSI | S 10b5-1 | 200 | $22.91 | $4,582 | 106,270 Direct | -0.19% | Disposed | 1118.5% (price as of 2026-10-02) |
| March 1, 2006 | MKSI | S 10b5-1 | 255 | $22.90 | $5,840 | 106,470 Direct | -0.24% | Disposed | 1119.0% (price as of 2026-10-02) |
| March 1, 2006 | MKSI | S 10b5-1 | 1,000 | $22.81 | $22,810 | 106,725 Direct | -0.93% | Disposed | 1123.8% (price as of 2026-10-02) |
| March 1, 2006 | MKSI | S 10b5-1 | 4,000 | $22.80 | $91,200 | 107,725 Direct | -3.58% | Disposed | 1124.3% (price as of 2026-10-02) |
| Feb. 28, 2006 | MKSI | S 10b5-1 | 5,000 | $22.60 | $113,000 | 111,725 Direct | -4.28% | Disposed | 1135.2% (price as of 2026-10-02) |
| Feb. 16, 2006 | MKSI | S 10b5-1 | 4,815 | $23.07 | $111,082 | 116,725 Direct | -3.96% | Disposed | 1110.0% (price as of 2026-10-02) |
| Feb. 13, 2006 | MKSI | A | 12,000 | · | · | 121,540 Direct | +10.95% | Acquired | (price as of 2026-10-02) |
| Feb. 2, 2006 | MKSI | S 10b5-1 | 185 | $22.50 | $4,162 | 109,540 Direct | -0.17% | Disposed | 1140.7% (price as of 2026-10-02) |
| Jan. 27, 2006 | MKSI | S 10b5-1 | 5,000 | $22.00 | $110,000 | 109,725 Direct | -4.36% | Disposed | 1168.9% (price as of 2026-10-02) |
| Jan. 26, 2006 | MKSI | S 10b5-1 | 5,000 | $21.50 | $107,500 | 114,725 Direct | -4.18% | Disposed | 1198.4% (price as of 2026-10-02) |
| Jan. 19, 2006 | MKSI | S 10b5-1 | 5,000 | $21.00 | $105,000 | 119,725 Direct | -4.01% | Disposed | 1229.3% (price as of 2026-10-02) |
| Jan. 19, 2006 | MKSI | S 10b5-1 | 5,000 | $20.50 | $102,500 | 124,725 Direct | -3.85% | Disposed | 1261.7% (price as of 2026-10-02) |
| Jan. 18, 2006 | MKSI | S 10b5-1 | 5,000 | $20.00 | $100,000 | 129,725 Direct | -3.71% | Disposed | 1295.8% (price as of 2026-10-02) |
| May 17, 2005 | MKSI | A | 25,000 | · | · | 25,000 Direct | · | Acquired | (price as of 2026-10-02) |
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 6, 2007 | MKSI | Stock Option (right to buy) | Common | · | Aug. 8, 1988 | 1,563 | Disposed |
| June 6, 2007 | MKSI | Stock Option (right to buy) | Common | · | Aug. 8, 1988 | 750 | Disposed |
| March 8, 2007 | MKSI | Stock Option (right to buy) | Common | · | Aug. 8, 1988 | 10,006 | Disposed |
| March 8, 2007 | MKSI | Stock Option (right to buy) | Common | · | Aug. 8, 1988 | 931 | Disposed |
| March 8, 2007 | MKSI | Stock Option (right to buy) | Common | · | Aug. 8, 1988 | 7,500 | Disposed |
| March 8, 2007 | MKSI | Stock Option (right to buy) | Common | · | Aug. 8, 1988 | 8,000 | Disposed |
| March 1, 2007 | MKSI | Restricted Stock Unit | Common | · | · | 12,000 | Acquired |
| May 17, 2005 | MKSI | Stock Option (Right to Buy) | Common | $16.41 | May 16, 2015 | 25,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.