Mark Elliott Boulding
CIK 1578852 · View on SEC EDGAR ↗
First SEC filing: June 19, 2013 · Latest: June 19, 2013
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
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. 17, 2026 | PTCT | S 10b5-1 | 1,844 | $72.39 | $133,487 | 106,241 Direct | -1.71% | Disposed | -2.5% (price as of 2026-08-21) |
| Aug. 17, 2026 | PTCT | S 10b5-1 | 969 | $72.90 | $70,640 | 105,272 Direct | -0.91% | Disposed | -3.1% (price as of 2026-08-21) |
| July 6, 2026 | PTCT | S 10b5-1 | 745 | $86.38 | $64,353 | 105,272 Direct | -0.70% | Disposed | -18.3% (price as of 2026-08-21) |
| July 6, 2026 | PTCT | S 10b5-1 | 645 | $85.84 | $55,367 | 106,017 Direct | -0.60% | Disposed | -17.7% (price as of 2026-08-21) |
| July 6, 2026 | PTCT | S 10b5-1 | 1,036 | $84.41 | $87,449 | 106,662 Direct | -0.96% | Disposed | -16.3% (price as of 2026-08-21) |
| July 6, 2026 | PTCT | S 10b5-1 | 387 | $83.10 | $32,160 | 107,698 Direct | -0.36% | Disposed | -15.0% (price as of 2026-08-21) |
| July 6, 2026 | PTCT | S 10b5-1 | 601 | $86.38 | $51,914 | 105,272 Direct | -0.57% | Disposed | -18.3% (price as of 2026-08-21) |
| July 6, 2026 | PTCT | S 10b5-1 | 519 | $85.84 | $44,551 | 105,873 Direct | -0.49% | Disposed | -17.7% (price as of 2026-08-21) |
| July 6, 2026 | PTCT | S 10b5-1 | 833 | $84.41 | $70,314 | 106,392 Direct | -0.78% | Disposed | -16.3% (price as of 2026-08-21) |
| July 6, 2026 | PTCT | S 10b5-1 | 313 | $83.10 | $26,010 | 107,225 Direct | -0.29% | Disposed | -15.0% (price as of 2026-08-21) |
| June 17, 2026 | PTCT | S 10b5-1 | 309 | $79.25 | $24,488 | 105,272 Direct | -0.29% | Disposed | -10.9% (price as of 2026-08-21) |
| June 17, 2026 | PTCT | S 10b5-1 | 1,703 | $78.50 | $133,686 | 105,581 Direct | -1.59% | Disposed | -10.1% (price as of 2026-08-21) |
| June 17, 2026 | PTCT | S 10b5-1 | 1,850 | $79.24 | $146,594 | 105,272 Direct | -1.73% | Disposed | -10.9% (price as of 2026-08-21) |
| June 17, 2026 | PTCT | S 10b5-1 | 6,600 | $78.50 | $518,100 | 107,122 Direct | -5.80% | Disposed | -10.1% (price as of 2026-08-21) |
| Dec. 3, 2024 | PTCT | S 10b5-1 | 600 | $53.04 | $31,824 | 92,389 Direct | -0.65% | Disposed | 33.1% (price as of 2026-08-21) |
| Dec. 3, 2024 | PTCT | S 10b5-1 | 6,315 | $53.14 | $335,579 | 93,794 Direct | -6.31% | Disposed | 32.9% (price as of 2026-08-21) |
| Dec. 3, 2024 | PTCT | S 10b5-1 | 1,405 | $54.05 | $75,940 | 92,389 Direct | -1.50% | Disposed | 30.6% (price as of 2026-08-21) |
| Dec. 3, 2024 | PTCT | S 10b5-1 | 1,900 | $53.13 | $100,947 | 92,477 Direct | -2.01% | Disposed | 32.9% (price as of 2026-08-21) |
| Dec. 3, 2024 | PTCT | S 10b5-1 | 88 | $54.14 | $4,764 | 92,389 Direct | -0.10% | Disposed | 30.4% (price as of 2026-08-21) |
| Dec. 2, 2024 | PTCT | S 10b5-1 | 1,960 | $52.17 | $102,253 | 92,389 Direct | -2.08% | Disposed | 35.3% (price as of 2026-08-21) |
| Dec. 2, 2024 | PTCT | S 10b5-1 | 83,640 | $52.26 | $4,371,026 | 92,389 Direct | -47.51% | Disposed | 35.1% (price as of 2026-08-21) |
| Jan. 30, 2024 | PTCT | S 10b5-1 | 794 | $27.25 | $21,636 | 71,189 Direct | -1.10% | Disposed | 159.1% (price as of 2026-08-21) |
| Jan. 9, 2024 | PTCT | S 10b5-1 | 1,938 | $29.01 | $56,221 | 71,983 Direct | -2.62% | Disposed | 143.4% (price as of 2026-08-21) |
| Jan. 8, 2024 | PTCT | S 10b5-1 | 1,457 | $28.64 | $41,728 | 73,921 Direct | -1.93% | Disposed | 146.5% (price as of 2026-08-21) |
| April 17, 2023 | PTCT | S 10b5-1 | 3,292 | $51.42 | $169,275 | 75,378 Direct | -4.18% | Disposed | 37.3% (price as of 2026-08-21) |
| April 17, 2023 | PTCT | S 10b5-1 | 58,631 | $51.42 | $3,014,806 | 75,378 Direct | -43.75% | Disposed | 37.3% (price as of 2026-08-21) |
| Jan. 31, 2023 | PTCT | S | 812 | $45.63 | $37,052 | 75,378 Direct | -1.07% | Disposed | 54.7% (price as of 2026-08-21) |
| Jan. 11, 2023 | PTCT | S | 495 | $44.36 | $21,958 | 76,190 Direct | -0.65% | Disposed | 59.2% (price as of 2026-08-21) |
| Jan. 10, 2023 | PTCT | S | 590 | $42.93 | $25,329 | 76,685 Direct | -0.76% | Disposed | 64.5% (price as of 2026-08-21) |
| Jan. 9, 2023 | PTCT | S | 835 | $41.66 | $34,786 | 77,275 Direct | -1.07% | Disposed | 69.5% (price as of 2026-08-21) |
| Oct. 18, 2022 | PTCT | S 10b5-1 | 10 | $55.45 | $554 | 61,110 Direct | -0.02% | Disposed | 27.3% (price as of 2026-08-21) |
| Oct. 18, 2022 | PTCT | S 10b5-1 | 289 | $55.04 | $15,907 | 61,110 Direct | -0.47% | Disposed | 28.3% (price as of 2026-08-21) |
| Oct. 17, 2022 | PTCT | S 10b5-1 | 200 | $55.00 | $11,000 | 61,110 Direct | -0.33% | Disposed | 28.4% (price as of 2026-08-21) |
| Oct. 17, 2022 | PTCT | S 10b5-1 | 6,402 | $55.00 | $352,110 | 61,110 Direct | -9.48% | Disposed | 28.4% (price as of 2026-08-21) |
| Sept. 20, 2022 | PTCT | S 10b5-1 | 876 | $55.00 | $48,180 | 61,110 Direct | -1.41% | Disposed | 28.4% (price as of 2026-08-21) |
| Sept. 20, 2022 | PTCT | S 10b5-1 | 300 | $55.00 | $16,500 | 61,110 Direct | -0.49% | Disposed | 28.4% (price as of 2026-08-21) |
| April 13, 2022 | PTCT | S 10b5-1 | 2,276 | $45.17 | $102,807 | 61,110 Direct | -3.59% | Disposed | 56.3% (price as of 2026-08-21) |
| April 5, 2022 | PTCT | S 10b5-1 | 5 | $45.00 | $225 | 61,110 Direct | -0.01% | Disposed | 56.9% (price as of 2026-08-21) |
| Feb. 10, 2022 | PTCT | S 10b5-1 | 15,653 | $45.03 | $704,855 | 61,110 Direct | -20.39% | Disposed | 56.8% (price as of 2026-08-21) |
| Feb. 10, 2022 | PTCT | S 10b5-1 | 2,282 | $45.03 | $102,758 | 61,110 Direct | -3.60% | Disposed | 56.8% (price as of 2026-08-21) |
| Feb. 1, 2022 | PTCT | S | 779 | $40.00 | $31,160 | 61,110 Direct | -1.26% | Disposed | 76.5% (price as of 2026-08-21) |
| Jan. 7, 2022 | PTCT | S | 885 | $38.52 | $34,090 | 47,489 Direct | -1.83% | Disposed | 83.3% (price as of 2026-08-21) |
| Sept. 2, 2021 | PTCT | S 10b5-1 | 3,363 | $45.01 | $151,369 | 48,374 Direct | -6.50% | Disposed | 56.9% (price as of 2026-08-21) |
Showing latest 100 of 223 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 |
|---|---|---|---|---|---|---|---|
| Aug. 17, 2026 | PTCT | Stock Option (Right to Buy) | Common Stock (2,813) | $25.69 | Feb. 14, 2034 | 2,813 | Disposed |
| July 6, 2026 | PTCT | Stock Option (Right to Buy) | Common Stock (2,813) | $46.54 | Jan. 2, 2035 | 2,813 | Disposed |
| July 6, 2026 | PTCT | Stock Option (Right to Buy) | Common Stock (2,266) | $39.42 | Jan. 4, 2033 | 2,226 | Disposed |
| June 17, 2026 | PTCT | Stock Option (Right to Buy) | Common Stock (8,510) | $46.54 | Jan. 2, 2035 | 8,510 | Disposed |
| June 17, 2026 | PTCT | Stock Option (Right to Buy) | Common Stock (2,012) | $46.54 | Jan. 2, 2035 | 2,012 | Disposed |
| Dec. 3, 2024 | PTCT | Stock Option (Right to Buy) | Common Stock (600) | $33.02 | Jan. 2, 2029 | 600 | Disposed |
| Dec. 3, 2024 | PTCT | Stock Option (Right to Buy) | Common Stock (7,720) | $33.02 | Jan. 2, 2029 | 7,720 | Disposed |
| Dec. 3, 2024 | PTCT | Stock Option (Right to Buy) | Common Stock (1,988) | $33.02 | Jan. 2, 2029 | 1,988 | Disposed |
| Dec. 2, 2024 | PTCT | Stock Option (Right to Buy) | Common Stock (1,960) | $51.00 | Jan. 2, 2025 | 1,960 | Disposed |
| Dec. 2, 2024 | PTCT | Stock Option (Right to Buy) | Common Stock (83,640) | $51.00 | Jan. 2, 2025 | 83,640 | Disposed |
| Feb. 15, 2024 | PTCT | Stock Option (Right to Buy) | Common Stock (45,000) | $25.69 | Feb. 14, 2034 | 45,000 | Acquired |
| April 17, 2023 | PTCT | Stock Option (Right to Buy) | Common Stock (3,292) | $30.86 | Jan. 3, 2026 | 3,292 | Disposed |
| April 17, 2023 | PTCT | Stock Option (Right to Buy) | Common Stock (58,631) | $30.86 | Jan. 3, 2026 | 58,631 | Disposed |
| Jan. 5, 2023 | PTCT | Stock Option (Right to Buy) | Common Stock (36,250) | $39.42 | Jan. 4, 2033 | 36,250 | Acquired |
| Oct. 18, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock (10) | $30.86 | Jan. 3, 2026 | 10 | Disposed |
| Oct. 18, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock (289) | $30.86 | Jan. 3, 2026 | 289 | Disposed |
| Oct. 17, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock (200) | $30.86 | Jan. 3, 2026 | 200 | Disposed |
| Oct. 17, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock (6,402) | $30.86 | Jan. 3, 2026 | 6,402 | Disposed |
| Sept. 20, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock (70,000) | $30.86 | Jan. 3, 2026 | 876 | Disposed |
| Sept. 20, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock (69,124) | $30.86 | Jan. 3, 2026 | 300 | Disposed |
| April 13, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock (2,276) | $11.23 | Jan. 2, 2027 | 2,276 | Disposed |
| April 5, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock (5) | $11.23 | Jan. 2, 2027 | 5 | Disposed |
| Feb. 10, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock (15,653) | $18.01 | Jan. 2, 2028 | 15,653 | Disposed |
| Feb. 10, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock (2,282) | $11.23 | Jan. 2, 2027 | 2,282 | Disposed |
| Jan. 7, 2022 | PTCT | Stock Option (Right to Buy) | Common Stock (54,000) | $38.10 | Jan. 6, 2032 | 54,000 | Acquired |
| Sept. 2, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock (3,363) | $18.01 | Jan. 2, 2028 | 3,363 | Disposed |
| July 9, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock (244) | $18.01 | Jan. 2, 2028 | 244 | Disposed |
| July 9, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock (227) | $18.01 | Jan. 2, 2028 | 227 | Disposed |
| July 9, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock (410) | $18.01 | Jan. 2, 2028 | 410 | Disposed |
| July 9, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock (548) | $18.01 | Jan. 2, 2028 | 548 | Disposed |
| July 8, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock (1,405) | $18.01 | Jan. 2, 2028 | 1,405 | Disposed |
| July 8, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock (1,800) | $18.01 | Jan. 2, 2028 | 1,800 | Disposed |
| July 8, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock (1,500) | $18.01 | Jan. 2, 2028 | 1,500 | Disposed |
| July 8, 2021 | PTCT | Stock Option (Right To Buy) | Common Stock (1,100) | $18.01 | Jan. 2, 2028 | 1,100 | Disposed |
| July 8, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock (1,000) | $11.23 | Jan. 2, 2027 | 1,000 | Disposed |
| July 8, 2021 | PTCT | Stock Option (Right To Buy) | Common Stock (1,000) | $11.23 | Jan. 2, 2027 | 1,000 | Disposed |
| Jan. 6, 2021 | PTCT | Stock Option (Right to Buy) | Common Stock (59,500) | $66.49 | Jan. 5, 2031 | 59,500 | Acquired |
| July 7, 2020 | PTCT | Stock Option (Right To Buy) | Common Stock (17,500) | $18.01 | Jan. 2, 2028 | 17,500 | Disposed |
| July 7, 2020 | PTCT | Stock Option (Right To Buy) | Common Stock (13,125) | $11.23 | Jan. 2, 2027 | 13,125 | Disposed |
| Jan. 29, 2020 | PTCT | Stock Option (Right To Buy) | Common Stock (59,500) | $51.16 | Jan. 28, 2030 | 59,500 | Acquired |
| July 5, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (4,375) | $18.01 | Jan. 2, 2028 | 4,375 | Disposed |
| July 5, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (4,375) | $18.01 | Jan. 2, 2028 | 4,375 | Disposed |
| July 5, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (3,281) | $11.23 | Jan. 2, 2027 | 3,281 | Disposed |
| July 5, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (3,281) | $11.23 | Jan. 2, 2027 | 3,281 | Disposed |
| July 1, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (17,500) | $18.01 | Jan. 2, 2028 | 17,500 | Disposed |
| July 1, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (2,142) | $11.23 | Jan. 2, 2027 | 2,142 | Disposed |
| July 1, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (70,849) | $27.05 | Jan. 28, 2024 | 70,849 | Disposed |
| July 1, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (7,307) | $27.05 | Jan. 28, 2024 | 7,307 | Disposed |
| July 1, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (384) | $10.85 | May 15, 2023 | 384 | Disposed |
| July 1, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (5,910) | $10.85 | May 15, 2023 | 5,910 | Disposed |
| June 28, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (1,140) | $11.23 | Jan. 2, 2027 | 1,140 | Disposed |
| June 28, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (22,968) | $11.23 | Jan. 2, 2027 | 22,968 | Disposed |
| June 28, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (1,844) | $27.05 | Jan. 28, 2024 | 1,844 | Disposed |
| June 28, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (44,090) | $10.85 | May 15, 2023 | 44,090 | Disposed |
| June 28, 2019 | PTCT | Stock Option (Right To Buy) | Common Stock (7,533) | $10.85 | May 15, 2023 | 7,533 | Disposed |
| Jan. 22, 2019 | PTCT | Stock Option (Right to Buy) | Common Stock (17,500) | $33.02 | Jan. 21, 2029 | 17,500 | Acquired |
| Jan. 22, 2019 | PTCT | Stock Option (Right to Buy) | Common Stock (72,500) | $33.02 | Jan. 21, 2029 | 72,500 | Acquired |
| Jan. 3, 2018 | PTCT | Stock Option (Right To Buy) | Common Stock (70,000) | $18.01 | Jan. 2, 2028 | 70,000 | Acquired |
| Jan. 3, 2017 | PTCT | Stock Option (Right To Buy) | Common Stock (52,500) | $11.23 | Jan. 2, 2027 | 52,500 | Acquired |
| Jan. 4, 2016 | PTCT | Stock Option (right to buy) | Common Stock (70,000) | $30.86 | Jan. 3, 2026 | 70,000 | Acquired |
| June 8, 2015 | PTCT | Stock Option (Right to Buy) | Common Stock (50,000) | $10.85 | May 15, 2023 | 50,000 | Disposed |
| June 8, 2015 | PTCT | Stock Option (Right to Buy) | Common Stock (12,083) | $10.85 | May 15, 2023 | 12,083 | Disposed |
| Jan. 2, 2015 | PTCT | Stock Option (right to buy) | Common Stock (85,600) | $51.00 | Jan. 1, 2025 | 85,600 | Acquired |
| Jan. 28, 2014 | PTCT | Stock Option (right to buy) | Common Stock (80,000) | $27.05 | Jan. 27, 2024 | 80,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 13 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| June 19, 2013 | PTCT | Common Stock | 42,284 | Direct |
| June 19, 2013 | PTCT | Stock Option (right to buy)→ Common Stock (20,000) | 20,000 | Direct |
| June 19, 2013 | PTCT | Stock Option (right to buy)→ Common Stock (100,000) | 100,000 | Direct |
| June 19, 2013 | PTCT | Stock Option (right to buy)→ Common Stock (191) | 191 | Direct |
| June 19, 2013 | PTCT | Stock Option (right to buy)→ Common Stock (233) | 233 | Direct |
| June 19, 2013 | PTCT | Stock Option (right to buy)→ Common Stock (200) | 200 | Direct |
| June 19, 2013 | PTCT | Stock Option (right to buy)→ Common Stock (233) | 233 | Direct |
| June 19, 2013 | PTCT | Stock Option (right to buy)→ Common Stock (195) | 195 | Direct |
| June 19, 2013 | PTCT | Stock Option (right to buy)→ Common Stock (166) | 166 | Direct |
| June 19, 2013 | PTCT | Stock Option (right to buy)→ Common Stock (216) | 216 | Direct |
| June 19, 2013 | PTCT | Stock Option (right to buy)→ Common Stock (101) | 101 | Direct |
| June 19, 2013 | PTCT | Stock Option (right to buy)→ Common Stock (106) | 106 | Direct |
| June 19, 2013 | PTCT | Stock Option (right to buy)→ Common Stock (602) | 602 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2019 | $475,000 | — | — | — | $237,500 | — | $20,925 | $2,509,994 |
| 2018 | $434,120 | — | — | — | $312,567 | — | $10,530 | $1,604,903 |
| 2017 | $434,120 | $2,000 | — | — | $164,966 | — | $13,743 | $1,121,909 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.