Mitchell G Tyson
Insider
First SEC filing: Jan. 5, 2006 · Latest: Jan. 5, 2006
Insider at
Insider transactions
0 buys (P)
4 sells (S)
Net: $-905,200
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 |
|---|---|---|---|---|---|---|---|---|---|
| April 13, 2026 | PLAB | A | 3,722 | · | · | 36,921 Direct | +11.21% | Acquired | (price as of 2026-10-02) |
| April 1, 2026 | PLAB | S | 10,000 | $42.31 | $423,100 | 33,199 Direct | -23.15% | Disposed | -25.6% (price as of 2026-10-02) |
| Jan. 6, 2026 | PLAB | S | 5,000 | $35.21 | $176,050 | 43,199 Direct | -10.37% | Disposed | -10.6% (price as of 2026-10-02) |
| Jan. 3, 2026 | PLAB | A | 1,272 | · | · | 48,199 Direct | +2.71% | Acquired | (price as of 2026-10-02) |
| Dec. 12, 2025 | PLAB | S | 5,000 | $36.17 | $180,850 | 46,927 Direct | -9.63% | Disposed | -12.9% (price as of 2026-10-02) |
| Oct. 7, 2025 | PLAB | S | 5,000 | $25.04 | $125,200 | 51,927 Direct | -8.78% | Disposed | 25.8% (price as of 2026-10-02) |
| July 10, 2025 | PLAB | S | 15,000 | $19.97 | $299,550 | 56,927 Direct | -20.85% | Disposed | 57.7% (price as of 2026-10-02) |
| June 13, 2025 | PLAB | G | 2,000 | · | · | 71,927 Direct | -2.71% | Disposed | (price as of 2026-10-02) |
| Feb. 13, 2025 | PLAB | A | 7,548 | · | · | 73,927 Direct | +11.37% | Acquired | (price as of 2026-10-02) |
| Feb. 13, 2025 | PLAB | A | 3,108 | $22.52 | $69,992 | 69,487 Direct | +4.68% | Acquired | 39.8% (price as of 2026-10-02) |
| Dec. 19, 2024 | PLAB | S | 20,000 | $25.06 | $501,200 | 66,379 Direct | -23.15% | Disposed | 25.7% (price as of 2026-10-02) |
| Jan. 3, 2024 | PLAB | A | 15,000 | · | · | 86,379 Direct | +21.01% | Acquired | (price as of 2026-10-02) |
| Jan. 3, 2023 | PLAB | S 10b5-1 | 2,000 | $17.33 | $34,660 | 56,379 Direct | -3.43% | Disposed | 81.7% (price as of 2026-10-02) |
| Jan. 3, 2023 | PLAB | A | 15,000 | · | · | 71,379 Direct | +26.61% | Acquired | (price as of 2026-10-02) |
| Dec. 1, 2022 | PLAB | S 10b5-1 | 2,000 | $18.94 | $37,880 | 58,379 Direct | -3.31% | Disposed | 66.3% (price as of 2026-10-02) |
| Nov. 1, 2022 | PLAB | S 10b5-1 | 2,000 | $16.53 | $33,060 | 60,379 Direct | -3.21% | Disposed | 90.5% (price as of 2026-10-02) |
| Oct. 3, 2022 | PLAB | S 10b5-1 | 2,000 | $15.00 | $30,000 | 62,379 Direct | -3.11% | Disposed | 109.9% (price as of 2026-10-02) |
| Sept. 1, 2022 | PLAB | S 10b5-1 | 2,000 | $16.47 | $32,940 | 64,379 Direct | -3.01% | Disposed | 91.2% (price as of 2026-10-02) |
| Aug. 1, 2022 | PLAB | S 10b5-1 | 2,000 | $23.54 | $47,080 | 66,379 Direct | -2.92% | Disposed | 33.8% (price as of 2026-10-02) |
| July 1, 2022 | PLAB | S 10b5-1 | 2,000 | $19.08 | $38,160 | 68,379 Direct | -2.84% | Disposed | 65.0% (price as of 2026-10-02) |
| June 1, 2022 | PLAB | S 10b5-1 | 2,000 | $21.91 | $43,820 | 70,379 Direct | -2.76% | Disposed | 43.7% (price as of 2026-10-02) |
| May 2, 2022 | PLAB | S 10b5-1 | 2,000 | $15.00 | $30,000 | 72,379 Direct | -2.69% | Disposed | 109.9% (price as of 2026-10-02) |
| April 1, 2022 | PLAB | S 10b5-1 | 2,000 | $17.00 | $34,000 | 74,379 Direct | -2.62% | Disposed | 85.2% (price as of 2026-10-02) |
| March 1, 2022 | PLAB | S 10b5-1 | 2,000 | $18.39 | $36,780 | 76,379 Direct | -2.55% | Disposed | 71.2% (price as of 2026-10-02) |
| Feb. 1, 2022 | PLAB | S 10b5-1 | 2,000 | $18.00 | $36,000 | 78,379 Direct | -2.49% | Disposed | 74.9% (price as of 2026-10-02) |
| Jan. 3, 2022 | PLAB | S 10b5-1 | 20,000 | $19.18 | $383,600 | 68,379 Direct | -22.63% | Disposed | 64.2% (price as of 2026-10-02) |
| Jan. 3, 2022 | PLAB | A | 12,000 | · | · | 80,379 Direct | +17.55% | Acquired | (price as of 2026-10-02) |
| Dec. 7, 2021 | PLAB | S 10b5-1 | 750 | $14.00 | $10,500 | 88,379 Direct | -0.84% | Disposed | 124.9% (price as of 2026-10-02) |
| Nov. 5, 2021 | PLAB | S 10b5-1 | 1,500 | $14.00 | $21,000 | 89,129 Direct | -1.66% | Disposed | 124.9% (price as of 2026-10-02) |
| Sept. 29, 2021 | PLAB | S 10b5-1 | 6,000 | $13.83 | $82,980 | 90,629 Direct | -6.21% | Disposed | 127.7% (price as of 2026-10-02) |
| Sept. 1, 2021 | PLAB | S 10b5-1 | 750 | $15.05 | $11,288 | 96,629 Direct | -0.77% | Disposed | 109.2% (price as of 2026-10-02) |
| Aug. 25, 2021 | PLAB | S 10b5-1 | 1,500 | $14.00 | $21,000 | 97,379 Direct | -1.52% | Disposed | 124.9% (price as of 2026-10-02) |
| June 15, 2021 | PLAB | S 10b5-1 | 4,500 | $14.00 | $63,000 | 98,879 Direct | -4.35% | Disposed | 124.9% (price as of 2026-10-02) |
| Jan. 2, 2021 | PLAB | A | 12,000 | · | · | 103,379 Direct | +13.13% | Acquired | (price as of 2026-10-02) |
| Sept. 28, 2020 | PLAB | M | 6,000 | $6.14 | $36,840 | 91,379 Direct | +7.03% | Acquired | 412.9% (price as of 2026-10-02) |
| Sept. 28, 2020 | PLAB | M | 6,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 10, 2020 | PLAB | M | 3,000 | · | · | 6,000 Direct | -33.33% | Disposed | (price as of 2026-10-02) |
| Feb. 10, 2020 | PLAB | S 10b5-1 | 3,000 | $14.14 | $42,420 | 85,379 Direct | -3.39% | Disposed | 122.7% (price as of 2026-10-02) |
| Feb. 10, 2020 | PLAB | M | 3,000 | $6.14 | $18,420 | 88,379 Direct | +3.51% | Acquired | 412.9% (price as of 2026-10-02) |
| Jan. 10, 2020 | PLAB | M | 3,000 | · | · | 9,000 Direct | -25.00% | Disposed | (price as of 2026-10-02) |
| Jan. 10, 2020 | PLAB | S 10b5-1 | 3,000 | $15.09 | $45,270 | 85,379 Direct | -3.39% | Disposed | 108.7% (price as of 2026-10-02) |
| Jan. 10, 2020 | PLAB | M | 3,000 | $6.14 | $18,420 | 88,379 Direct | +3.51% | Acquired | 412.9% (price as of 2026-10-02) |
| Jan. 3, 2020 | PLAB | A | 12,000 | · | · | 85,379 Direct | +16.35% | Acquired | (price as of 2026-10-02) |
| Dec. 27, 2019 | PLAB | S 10b5-1 | 750 | $15.93 | $11,948 | 73,379 Direct | -1.01% | Disposed | 97.7% (price as of 2026-10-02) |
| Nov. 27, 2019 | PLAB | M | 1,150 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Nov. 27, 2019 | PLAB | S 10b5-1 | 750 | $12.01 | $9,008 | 74,129 Direct | -1.00% | Disposed | 162.2% (price as of 2026-10-02) |
| Nov. 27, 2019 | PLAB | S 10b5-1 | 1,150 | $12.00 | $13,800 | 74,879 Direct | -1.51% | Disposed | 162.4% (price as of 2026-10-02) |
| Nov. 27, 2019 | PLAB | M | 1,150 | $4.42 | $5,083 | 76,029 Direct | +1.54% | Acquired | 612.4% (price as of 2026-10-02) |
| Oct. 28, 2019 | PLAB | M | 1,150 | · | · | 1,150 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| Oct. 28, 2019 | PLAB | S 10b5-1 | 750 | $12.38 | $9,285 | 74,879 Direct | -0.99% | Disposed | 154.4% (price as of 2026-10-02) |
| Oct. 28, 2019 | PLAB | S 10b5-1 | 1,150 | $12.38 | $14,237 | 75,629 Direct | -1.50% | Disposed | 154.4% (price as of 2026-10-02) |
| Oct. 28, 2019 | PLAB | M | 1,150 | $4.42 | $5,083 | 76,779 Direct | +1.52% | Acquired | 612.4% (price as of 2026-10-02) |
| Sept. 27, 2019 | PLAB | M | 1,150 | · | · | 2,300 Direct | -33.33% | Disposed | (price as of 2026-10-02) |
| Sept. 27, 2019 | PLAB | S 10b5-1 | 750 | $11.15 | $8,362 | 75,629 Direct | -0.98% | Disposed | 182.4% (price as of 2026-10-02) |
| Sept. 27, 2019 | PLAB | S 10b5-1 | 1,150 | $11.15 | $12,822 | 76,379 Direct | -1.48% | Disposed | 182.4% (price as of 2026-10-02) |
| Sept. 27, 2019 | PLAB | M | 1,150 | $4.42 | $5,083 | 77,529 Direct | +1.51% | Acquired | 612.4% (price as of 2026-10-02) |
| Aug. 27, 2019 | PLAB | M | 1,150 | · | · | 3,450 Direct | -25.00% | Disposed | (price as of 2026-10-02) |
| Aug. 27, 2019 | PLAB | S 10b5-1 | 750 | $9.35 | $7,012 | 76,379 Direct | -0.97% | Disposed | 236.8% (price as of 2026-10-02) |
| Aug. 27, 2019 | PLAB | S 10b5-1 | 1,150 | $9.34 | $10,741 | 77,129 Direct | -1.47% | Disposed | 237.2% (price as of 2026-10-02) |
| Aug. 27, 2019 | PLAB | M | 1,150 | $4.42 | $5,083 | 78,279 Direct | +1.49% | Acquired | 612.4% (price as of 2026-10-02) |
| July 29, 2019 | PLAB | S 10b5-1 | 1,150 | $9.68 | $11,132 | 77,879 Direct | -1.46% | Disposed | 225.3% (price as of 2026-10-02) |
| July 29, 2019 | PLAB | M | 1,150 | · | · | 4,600 Direct | -20.00% | Disposed | (price as of 2026-10-02) |
| July 29, 2019 | PLAB | S 10b5-1 | 750 | $9.68 | $7,260 | 77,129 Direct | -0.96% | Disposed | 225.3% (price as of 2026-10-02) |
| July 29, 2019 | PLAB | M | 1,150 | $4.42 | $5,083 | 79,029 Direct | +1.48% | Acquired | 612.4% (price as of 2026-10-02) |
| July 22, 2019 | PLAB | S 10b5-1 | 1,500 | $9.00 | $13,500 | 77,879 Direct | -1.89% | Disposed | 249.9% (price as of 2026-10-02) |
| June 28, 2019 | PLAB | M | 1,150 | · | · | 5,750 Direct | -16.67% | Disposed | (price as of 2026-10-02) |
| June 28, 2019 | PLAB | S 10b5-1 | 1,150 | $8.50 | $9,775 | 79,379 Direct | -1.43% | Disposed | 270.5% (price as of 2026-10-02) |
| June 28, 2019 | PLAB | M | 1,150 | $4.42 | $5,083 | 80,529 Direct | +1.45% | Acquired | 612.4% (price as of 2026-10-02) |
| May 28, 2019 | PLAB | M | 1,150 | · | · | 6,900 Direct | -14.29% | Disposed | (price as of 2026-10-02) |
| May 28, 2019 | PLAB | S 10b5-1 | 1,150 | $8.50 | $9,775 | 79,379 Direct | -1.43% | Disposed | 270.5% (price as of 2026-10-02) |
| May 28, 2019 | PLAB | M | 1,150 | $4.42 | $5,083 | 80,529 Direct | +1.45% | Acquired | 612.4% (price as of 2026-10-02) |
| April 29, 2019 | PLAB | M | 1,150 | · | · | 8,050 Direct | -12.50% | Disposed | (price as of 2026-10-02) |
| April 29, 2019 | PLAB | S 10b5-1 | 750 | $9.42 | $7,065 | 79,379 Direct | -0.94% | Disposed | 234.3% (price as of 2026-10-02) |
| April 29, 2019 | PLAB | S 10b5-1 | 1,150 | $9.42 | $10,833 | 80,129 Direct | -1.41% | Disposed | 234.3% (price as of 2026-10-02) |
| April 29, 2019 | PLAB | M | 1,150 | $4.42 | $5,083 | 81,279 Direct | +1.44% | Acquired | 612.4% (price as of 2026-10-02) |
| March 27, 2019 | PLAB | M | 1,150 | · | · | 9,200 Direct | -11.11% | Disposed | (price as of 2026-10-02) |
| March 27, 2019 | PLAB | S 10b5-1 | 750 | $9.26 | $6,945 | 80,129 Direct | -0.93% | Disposed | 240.1% (price as of 2026-10-02) |
| March 27, 2019 | PLAB | S 10b5-1 | 1,150 | $9.26 | $10,649 | 80,879 Direct | -1.40% | Disposed | 240.1% (price as of 2026-10-02) |
| March 27, 2019 | PLAB | M | 1,150 | $4.42 | $5,083 | 82,029 Direct | +1.42% | Acquired | 612.4% (price as of 2026-10-02) |
| Feb. 27, 2019 | PLAB | M | 1,150 | · | · | 10,350 Direct | -10.00% | Disposed | (price as of 2026-10-02) |
| Feb. 27, 2019 | PLAB | S 10b5-1 | 750 | $9.76 | $7,320 | 80,879 Direct | -0.92% | Disposed | 222.6% (price as of 2026-10-02) |
| Feb. 27, 2019 | PLAB | S 10b5-1 | 1,150 | $9.77 | $11,236 | 81,629 Direct | -1.39% | Disposed | 222.3% (price as of 2026-10-02) |
| Feb. 27, 2019 | PLAB | M | 1,150 | $4.42 | $5,083 | 82,779 Direct | +1.41% | Acquired | 612.4% (price as of 2026-10-02) |
| Jan. 28, 2019 | PLAB | M | 1,150 | · | · | 11,500 Direct | -9.09% | Disposed | (price as of 2026-10-02) |
| Jan. 28, 2019 | PLAB | S 10b5-1 | 750 | $10.51 | $7,882 | 81,629 Direct | -0.91% | Disposed | 199.6% (price as of 2026-10-02) |
| Jan. 28, 2019 | PLAB | S 10b5-1 | 1,150 | $10.53 | $12,110 | 82,379 Direct | -1.38% | Disposed | 199.1% (price as of 2026-10-02) |
| Jan. 28, 2019 | PLAB | M | 1,150 | $4.42 | $5,083 | 83,529 Direct | +1.40% | Acquired | 612.4% (price as of 2026-10-02) |
| Jan. 2, 2019 | PLAB | A | 12,000 | · | · | 82,379 Direct | +17.05% | Acquired | (price as of 2026-10-02) |
| Dec. 27, 2018 | PLAB | M | 1,150 | · | · | 12,650 Direct | +10.00% | Acquired | (price as of 2026-10-02) |
| Dec. 27, 2018 | PLAB | S 10b5-1 | 750 | $9.54 | $7,155 | 70,379 Direct | -1.05% | Disposed | 230.1% (price as of 2026-10-02) |
| Dec. 27, 2018 | PLAB | S 10b5-1 | 1,150 | $9.54 | $10,971 | 71,129 Direct | -1.59% | Disposed | 230.1% (price as of 2026-10-02) |
| Dec. 27, 2018 | PLAB | M | 1,150 | $4.42 | $5,083 | 72,279 Direct | +1.62% | Acquired | 612.4% (price as of 2026-10-02) |
| Nov. 27, 2018 | PLAB | M | 1,200 | · | · | 13,800 Direct | -8.00% | Disposed | (price as of 2026-10-02) |
| Nov. 27, 2018 | PLAB | S 10b5-1 | 750 | $9.72 | $7,290 | 71,129 Direct | -1.04% | Disposed | 224.0% (price as of 2026-10-02) |
| Nov. 27, 2018 | PLAB | S 10b5-1 | 1,200 | $9.73 | $11,676 | 71,879 Direct | -1.64% | Disposed | 223.6% (price as of 2026-10-02) |
| Nov. 27, 2018 | PLAB | M | 1,200 | $4.42 | $5,304 | 73,079 Direct | +1.67% | Acquired | 612.4% (price as of 2026-10-02) |
| Oct. 29, 2018 | PLAB | M | 1,040 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Oct. 29, 2018 | PLAB | S 10b5-1 | 750 | $9.59 | $7,192 | 71,879 Direct | -1.03% | Disposed | 228.4% (price as of 2026-10-02) |
| Oct. 29, 2018 | PLAB | S 10b5-1 | 1,040 | $9.58 | $9,963 | 72,629 Direct | -1.41% | Disposed | 228.7% (price as of 2026-10-02) |
| Oct. 29, 2018 | PLAB | M | 1,040 | $0.76 | $790 | 73,669 Direct | +1.43% | Acquired | 4043.4% (price as of 2026-10-02) |
Showing latest 100 of 189 transactions
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 |
|---|---|---|---|---|---|---|---|
| Sept. 28, 2020 | PLAB | Non-Qualified Stock Options | COMMON STOCK | $6.14 | Jan. 3, 2022 | 6,000 | Disposed |
| Feb. 10, 2020 | PLAB | Non-Qualified Stock Options | Common Stock | $6.14 | Jan. 3, 2022 | 3,000 | Disposed |
| Jan. 10, 2020 | PLAB | Non-Qualified Stock Options | Common Stock | $6.14 | Jan. 3, 2022 | 3,000 | Disposed |
| Nov. 27, 2019 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,150 | Disposed |
| Oct. 28, 2019 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,150 | Disposed |
| Sept. 27, 2019 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,150 | Disposed |
| Aug. 27, 2019 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,150 | Disposed |
| July 29, 2019 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,150 | Disposed |
| June 28, 2019 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,150 | Disposed |
| May 28, 2019 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,150 | Disposed |
| April 29, 2019 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,150 | Disposed |
| March 27, 2019 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,150 | Disposed |
| Feb. 27, 2019 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,150 | Disposed |
| Jan. 28, 2019 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,150 | Disposed |
| Dec. 27, 2018 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,150 | Acquired |
| Nov. 27, 2018 | PLAB | Non-Qualified Stock Options | Common Stock | $4.42 | Dec. 21, 2019 | 1,200 | Disposed |
| Oct. 29, 2018 | PLAB | Non-Qualified Stock Options | Common Stock | $0.76 | Nov. 10, 2018 | 1,040 | Disposed |
| Sept. 27, 2018 | PLAB | Non-Qualified Stock Options | Common Stock | $0.76 | Nov. 10, 2018 | 1,040 | Disposed |
| Aug. 27, 2018 | PLAB | Non-Qualified Stock Options | Common Stock | $0.76 | Nov. 10, 2018 | 1,040 | Disposed |
| July 27, 2018 | PLAB | Non-Qualified Stock Options | Common Stock | $0.76 | Nov. 10, 2018 | 1,040 | Disposed |
| July 9, 2018 | PLAB | Non-Qualified Stock Options | Common Stock | $0.76 | Nov. 10, 2018 | 1,040 | Disposed |
| May 29, 2018 | PLAB | Non-Qualified Stock Options | Common Stock | $0.76 | Nov. 10, 2018 | 1,040 | Disposed |
| May 22, 2018 | PLAB | Non-Qualified Stock Options | Common Stock | $0.76 | Nov. 10, 2018 | 1,040 | Disposed |
| March 27, 2018 | PLAB | Non-Qualified Stock Options | Common Stock | $0.76 | Nov. 10, 2018 | 1,040 | Disposed |
| March 8, 2018 | PLAB | Non-Qualified Stock Options | Common Stock | $0.76 | Nov. 10, 2018 | 1,040 | Disposed |
| Jan. 26, 2018 | PLAB | Non-Qualified Stock Options | Common Stock | $0.76 | Nov. 10, 2018 | 1,040 | Acquired |
| Jan. 3, 2012 | PLAB | Stock Options (Right to Buy) | Common Stock | $6.14 | Jan. 3, 2022 | 12,000 | Acquired |
| Dec. 21, 2009 | PLAB | Stock Options (Right to Buy) | Common Stock | $4.42 | Dec. 21, 2019 | 15,000 | Acquired |
| Nov. 10, 2008 | PLAB | Stock Options (Right to Buy) | Common Stock | $0.76 | Nov. 10, 2018 | 200 | Disposed |
| Nov. 10, 2008 | PLAB | Stock Options (Right to Buy) | Common Stock | $0.76 | Nov. 10, 2018 | 14,400 | Disposed |
| Nov. 10, 2008 | PLAB | Stock Options (Right to Buy) | Common Stock | $0.76 | Nov. 10, 2018 | 25,000 | Acquired |
| Feb. 14, 2005 | PLAB | Common Stock | Common Stock | $16.65 | Feb. 14, 2015 | 5,000 | Acquired |
| Jan. 17, 2005 | PLAB | Stock Option (right to buy) | Common Stock | $14.56 | Jan. 17, 2015 | 15,000 | Acquired |
| Aug. 16, 2004 | PLAB | Stock Option (right to buy) | Common Stock | $13.19 | Aug. 16, 2014 | 5,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 1, 2004 | PLAB | No securities beneficially owned | 0 | Direct |