Matthew B. Klein
Insider
First SEC filing: April 17, 2020 · Latest: April 17, 2020
Insider at
Insider transactions
0 buys (P)
14 sells (S)
Net: $-4,405,328
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 |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 4, 2026 | PTCT | S | 10,292 | $68.57 | $705,722 | 383,868 Direct | -2.61% | Disposed | -7.5% (price as of 2026-10-02) |
| May 21, 2026 | CLPT | A | 12,820 | · | · | 12,820 Direct | · | Acquired | (price as of 2026-10-02) |
| May 21, 2026 | CLPT | S | 16,000 | $11.59 | $185,440 | 46,935 Direct | -25.42% | Disposed | -6.0% (price as of 2026-10-02) |
| May 19, 2026 | CLPT | M | 12,417 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 19, 2026 | CLPT | M | 12,417 | · | · | 62,935 Direct | +24.58% | Acquired | (price as of 2026-10-02) |
| May 14, 2026 | PTCT | S 10b5-1 | 679 | $73.06 | $49,608 | 405,891 Direct | -0.17% | Disposed | -13.1% (price as of 2026-10-02) |
| May 14, 2026 | PTCT | S 10b5-1 | 7,221 | $73.08 | $527,711 | 398,670 Direct | -1.78% | Disposed | -13.2% (price as of 2026-10-02) |
| May 14, 2026 | PTCT | S 10b5-1 | 2,100 | $73.08 | $153,468 | 396,570 Direct | -0.53% | Disposed | -13.2% (price as of 2026-10-02) |
| May 14, 2026 | PTCT | S | 2,572 | $72.46 | $186,367 | 393,998 Direct | -0.65% | Disposed | -12.4% (price as of 2026-10-02) |
| May 13, 2026 | PTCT | A | 12,500 | · | · | 406,570 Direct | +3.17% | Acquired | (price as of 2026-10-02) |
| April 21, 2026 | PTCT | S 10b5-1 | 2,850 | $70.91 | $202,094 | 394,070 Direct | -0.72% | Disposed | -10.5% (price as of 2026-10-02) |
| March 12, 2026 | PTCT | S | 2,662 | $64.08 | $170,581 | 396,920 Direct | -0.67% | Disposed | -1.0% (price as of 2026-10-02) |
| March 11, 2026 | PTCT | A 10b5-1 | 12,500 | · | · | 399,582 Direct | +3.23% | Acquired | (price as of 2026-10-02) |
| Feb. 18, 2026 | PTCT | S 10b5-1 | 7,371 | $69.36 | $511,253 | 387,082 Direct | -1.87% | Disposed | -8.5% (price as of 2026-10-02) |
| Jan. 8, 2026 | PTCT | S 10b5-1 | 2,514 | $76.45 | $192,195 | 394,453 Direct | -0.63% | Disposed | -17.0% (price as of 2026-10-02) |
| Jan. 7, 2026 | PTCT | S 10b5-1 | 3,016 | $77.48 | $233,680 | 396,967 Direct | -0.75% | Disposed | -18.1% (price as of 2026-10-02) |
| Jan. 6, 2026 | PTCT | S 10b5-1 | 5,149 | $76.95 | $396,216 | 399,983 Direct | -1.27% | Disposed | -17.5% (price as of 2026-10-02) |
| Jan. 2, 2026 | PTCT | A | 63,000 | · | · | 405,132 Direct | +18.41% | Acquired | (price as of 2026-10-02) |
| Jan. 2, 2026 | PTCT | A | 157,500 | · | · | 157,500 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 30, 2025 | PTCT | S 10b5-1 | 8,089 | $76.64 | $619,941 | 341,875 Direct | -2.31% | Disposed | -17.2% (price as of 2026-10-02) |
| Dec. 2, 2025 | PTCT | S | 3,428 | $79.07 | $271,052 | 349,964 Direct | -0.97% | Disposed | -19.7% (price as of 2026-10-02) |
| Dec. 1, 2025 | PTCT | A 10b5-1 | 15,625 | · | · | 353,392 Direct | +4.63% | Acquired | (price as of 2026-10-02) |
| Aug. 5, 2025 | PTCT | S | 10,739 | $51.74 | $555,636 | 337,767 Direct | -3.08% | Disposed | 22.7% (price as of 2026-10-02) |
| Aug. 1, 2025 | PTCT | A 10b5-1 | 75,000 | · | · | 348,506 Direct | +27.42% | Acquired | (price as of 2026-10-02) |
| May 22, 2025 | CLPT | A | 12,417 | · | · | 12,417 Direct | · | Acquired | (price as of 2026-10-02) |
| May 16, 2025 | CLPT | M | 21,093 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 16, 2025 | CLPT | M | 21,093 | · | · | 50,518 Direct | +71.68% | Acquired | (price as of 2026-10-02) |
| April 22, 2025 | PTCT | S 10b5-1 | 2,804 | $48.74 | $136,667 | 273,234 Direct | -1.02% | Disposed | 30.2% (price as of 2026-10-02) |
| Feb. 20, 2025 | PTCT | S 10b5-1 | 3,895 | $50.12 | $195,217 | 276,038 Direct | -1.39% | Disposed | 26.6% (price as of 2026-10-02) |
| Feb. 19, 2025 | PTCT | S 10b5-1 | 3,897 | $50.10 | $195,240 | 279,933 Direct | -1.37% | Disposed | 26.7% (price as of 2026-10-02) |
| Jan. 8, 2025 | PTCT | S 10b5-1 | 2,402 | $44.50 | $106,889 | 283,830 Direct | -0.84% | Disposed | 42.6% (price as of 2026-10-02) |
| Jan. 7, 2025 | PTCT | S 10b5-1 | 2,142 | $45.34 | $97,118 | 286,232 Direct | -0.74% | Disposed | 40.0% (price as of 2026-10-02) |
| Jan. 3, 2025 | PTCT | A | 70,000 | · | · | 288,374 Direct | +32.06% | Acquired | (price as of 2026-10-02) |
| Jan. 3, 2025 | PTCT | A | 175,000 | · | · | 175,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2024 | PTCT | S 10b5-1 | 8,279 | $45.16 | $373,880 | 217,528 Direct | -3.67% | Disposed | 40.5% (price as of 2026-10-02) |
| May 16, 2024 | CLPT | A | 21,093 | · | · | 21,093 Direct | · | Acquired | (price as of 2026-10-02) |
| May 14, 2024 | CLPT | M | 17,153 | · | · | 29,425 Direct | +139.77% | Acquired | (price as of 2026-10-02) |
| May 14, 2024 | CLPT | M | 17,153 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| April 19, 2024 | PTCT | S 10b5-1 | 3,361 | $24.89 | $83,655 | 225,807 Direct | -1.47% | Disposed | 155.0% (price as of 2026-10-02) |
| April 17, 2024 | PTCT | S 10b5-1 | 1,307 | $25.14 | $32,858 | 229,168 Direct | -0.57% | Disposed | 152.4% (price as of 2026-10-02) |
| Feb. 15, 2024 | PTCT | A | 70,000 | · | · | 230,475 Direct | +43.62% | Acquired | (price as of 2026-10-02) |
| Feb. 15, 2024 | PTCT | A | 175,000 | · | · | 175,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 9, 2024 | PTCT | S 10b5-1 | 5,443 | $29.01 | $157,901 | 160,475 Direct | -3.28% | Disposed | 118.8% (price as of 2026-10-02) |
| Jan. 8, 2024 | PTCT | S 10b5-1 | 2,237 | $28.64 | $64,068 | 165,918 Direct | -1.33% | Disposed | 121.6% (price as of 2026-10-02) |
| Jan. 5, 2024 | PTCT | S 10b5-1 | 10,107 | $27.15 | $274,405 | 168,155 Direct | -5.67% | Disposed | 133.7% (price as of 2026-10-02) |
| Dec. 28, 2023 | PTCT | A | 75,000 | · | · | 177,961 Direct | +72.84% | Acquired | (price as of 2026-10-02) |
| May 25, 2023 | CLPT | A | 17,153 | · | · | 17,153 Direct | · | Acquired | (price as of 2026-10-02) |
| April 18, 2023 | PTCT | A 10b5-1 | 26,000 | · | · | 103,856 Direct | +33.39% | Acquired | (price as of 2026-10-02) |
| April 18, 2023 | PTCT | S | 1,211 | $52.04 | $63,020 | 102,645 Direct | -1.17% | Disposed | 21.9% (price as of 2026-10-02) |
| April 18, 2023 | PTCT | A 10b5-1 | 65,000 | · | · | 65,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 11, 2023 | PTCT | S | 2,244 | $44.36 | $99,544 | 77,856 Direct | -2.80% | Disposed | 43.1% (price as of 2026-10-02) |
| Jan. 10, 2023 | PTCT | S | 2,273 | $42.93 | $97,580 | 80,100 Direct | -2.76% | Disposed | 47.8% (price as of 2026-10-02) |
| Jan. 9, 2023 | PTCT | S | 731 | $41.66 | $30,453 | 82,373 Direct | -0.88% | Disposed | 52.3% (price as of 2026-10-02) |
| Jan. 5, 2023 | PTCT | A | 26,000 | · | · | 83,104 Direct | +45.53% | Acquired | (price as of 2026-10-02) |
| Jan. 5, 2023 | PTCT | A | 65,000 | · | · | 65,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 25, 2022 | CLPT | A | 9,269 | · | · | 12,272 Direct | +308.66% | Acquired | (price as of 2026-10-02) |
| May 25, 2022 | CLPT | A | 6,179 | · | · | 6,179 Direct | · | Acquired | (price as of 2026-10-02) |
| April 19, 2022 | PTCT | S | 897 | $42.52 | $38,140 | 56,564 Direct | -1.56% | Disposed | 49.2% (price as of 2026-10-02) |
| Jan. 7, 2022 | PTCT | A | 50,000 | · | · | 50,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 7, 2022 | PTCT | A | 52,500 | · | · | 52,500 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 7, 2022 | PTCT | A | 20,000 | · | · | 57,461 Direct | +53.39% | Acquired | (price as of 2026-10-02) |
| Jan. 7, 2022 | PTCT | A | 21,000 | · | · | 37,461 Direct | +127.57% | Acquired | (price as of 2026-10-02) |
| Jan. 7, 2022 | PTCT | S | 775 | $38.52 | $29,853 | 16,461 Direct | -4.50% | Disposed | 64.7% (price as of 2026-10-02) |
| June 25, 2021 | CLPT | A | 6,006 | · | · | 6,006 Direct | · | Acquired | (price as of 2026-10-02) |
| June 25, 2021 | CLPT | A | 3,003 | · | · | 3,003 Direct | · | Acquired | (price as of 2026-10-02) |
| April 20, 2021 | PTCT | S 10b5-1 | 1,444 | $46.58 | $67,262 | 17,006 Direct | -7.83% | Disposed | 36.2% (price as of 2026-10-02) |
| April 20, 2021 | PTCT | S 10b5-1 | 197 | $47.92 | $9,440 | 16,809 Direct | -1.16% | Disposed | 32.4% (price as of 2026-10-02) |
| April 19, 2021 | PTCT | S 10b5-1 | 859 | $48.17 | $41,378 | 18,450 Direct | -4.45% | Disposed | 31.7% (price as of 2026-10-02) |
| Jan. 15, 2021 | PTCT | M 10b5-1 | 4,300 | $38.98 | $167,614 | 86,314 Direct | -4.75% | Disposed | 62.8% (price as of 2026-10-02) |
| Jan. 15, 2021 | PTCT | S 10b5-1 | 4,300 | $69.09 | $297,087 | 19,309 Direct | -18.21% | Disposed | -8.1% (price as of 2026-10-02) |
| Jan. 15, 2021 | PTCT | M 10b5-1 | 4,300 | $38.98 | $167,614 | 23,609 Direct | +22.27% | Acquired | 62.8% (price as of 2026-10-02) |
| Jan. 8, 2021 | PTCT | S 10b5-1 | 4,000 | $69.48 | $277,920 | 20,809 Direct | -16.12% | Disposed | -8.7% (price as of 2026-10-02) |
| Jan. 8, 2021 | PTCT | S 10b5-1 | 1,500 | $70.32 | $105,480 | 19,309 Direct | -7.21% | Disposed | -9.8% (price as of 2026-10-02) |
| Jan. 8, 2021 | PTCT | M 10b5-1 | 5,500 | $38.98 | $214,390 | 90,614 Direct | -5.72% | Disposed | 62.8% (price as of 2026-10-02) |
| Jan. 8, 2021 | PTCT | M 10b5-1 | 5,500 | $38.98 | $214,390 | 24,809 Direct | +28.48% | Acquired | 62.8% (price as of 2026-10-02) |
| Jan. 7, 2021 | PTCT | M 10b5-1 | 3,886 | $38.98 | $151,476 | 96,114 Direct | -3.89% | Disposed | 62.8% (price as of 2026-10-02) |
| Jan. 7, 2021 | PTCT | S 10b5-1 | 3,886 | $68.98 | $268,056 | 19,309 Direct | -16.75% | Disposed | -8.0% (price as of 2026-10-02) |
| Jan. 7, 2021 | PTCT | M 10b5-1 | 3,886 | $38.98 | $151,476 | 23,195 Direct | +20.13% | Acquired | 62.8% (price as of 2026-10-02) |
| Jan. 6, 2021 | PTCT | A | 52,500 | · | · | 52,500 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 6, 2021 | PTCT | A | 9,000 | · | · | 19,309 Direct | +87.30% | Acquired | (price as of 2026-10-02) |
| April 16, 2020 | PTCT | A | 50,000 | $47.49 | $2,374,500 | 50,000 Direct | · | Acquired | 33.6% (price as of 2026-10-02) |
| April 16, 2020 | PTCT | A | 10,000 | · | · | 10,000 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 |
|---|---|---|---|---|---|---|---|
| May 21, 2026 | CLPT | Restricted Stock Units | Common Stock | · | · | 12,820 | Acquired |
| May 19, 2026 | CLPT | Restricted Stock Units | Common Stock | · | · | 12,417 | Disposed |
| Jan. 2, 2026 | PTCT | Stock Option (Right to Buy) | Common Stock | $76.74 | Jan. 1, 2036 | 157,500 | Acquired |
| May 22, 2025 | CLPT | Restricted Stock Units | Common Stock | · | · | 12,417 | Acquired |
| May 16, 2025 | CLPT | Restricted Stock Units | Common Stock | · | · | 21,093 | Disposed |
| Jan. 3, 2025 | PTCT | Stock Option (Right to Buy) | Common Stock | $46.54 | Jan. 2, 2035 | 175,000 | Acquired |
| May 16, 2024 | CLPT | Restricted Stock Units | Common Stock | · | · | 21,093 | Acquired |
| May 14, 2024 | CLPT | Restricted Stock Units | Common Stock | · | · | 17,153 | Disposed |
| Feb. 15, 2024 | PTCT | Stock Option (Right to Buy) | Common Stock | $25.69 | Feb. 14, 2034 | 175,000 | Acquired |
| May 25, 2023 | CLPT | Restricted Stock Units | Common Stock | · | · | 17,153 | Acquired |
| April 18, 2023 | PTCT | Stock Option (Right to Buy) | Common Stock | $52.96 | April 17, 2033 | 65,000 | Acquired |
| Jan. 5, 2023 | PTCT | Stock Option (Right to Buy) | Common Stock | $39.42 | Jan. 4, 2033 | 65,000 | Acquired |
| May 25, 2022 | CLPT | Stock Options (right to buy) | Common Stock | $9.71 | May 25, 2032 | 6,179 | Acquired |
| Jan. 7, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock | $38.10 | Jan. 6, 2032 | 50,000 | Acquired |
| Jan. 7, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock | $38.10 | Jan. 6, 2032 | 52,500 | Acquired |
| June 25, 2021 | CLPT | Stock Options (right to buy) | Common Stock | $19.98 | June 25, 2031 | 6,006 | Acquired |
| Jan. 15, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock | $38.98 | Oct. 24, 2029 | 4,300 | Disposed |
| Jan. 8, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock | $38.98 | Oct. 24, 2029 | 5,500 | Disposed |
| Jan. 7, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock | $39.98 | Oct. 24, 2029 | 3,886 | Disposed |
| Jan. 6, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock | $66.49 | Jan. 5, 2031 | 52,500 | Acquired |
| April 16, 2020 | PTCT | Stock Option (Right To Buy) | Common Stock | $47.49 | April 15, 2030 | 50,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.