Boulding Mark Elliott

Officer · PTCT

As of 2026-09-16, Boulding Mark Elliott has 159 Form 4 transactions on record across 1 company — 103 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Pattern in the record: open-market sales filed in August in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $1.1MIndirect: $0$1.1Mas of 2026-09-16
  • Direct $1.1M
  • Indirect $0
PTCTdirect16,876 sh$1.1M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

PTCT · 159 trades
2026-08-17: Sale, 1,844 sh ($133K)2026-08-17: Option exercise, 2,813 sh ($72K)2026-08-17: Sale, 969 sh ($71K)2026-08-17: Option exercise, 2,813 sh ($0)2026-07-06: Option exercise, 2,813 sh ($131K)2026-07-06: Option exercise, 2,266 sh ($89K)2026-07-06: Sale, 1,036 sh ($87K)2026-07-06: Sale, 833 sh ($70K)2026-07-06: Sale, 745 sh ($64K)2026-07-06: Sale, 645 sh ($55K)2026-07-06: Sale, 601 sh ($52K)2026-07-06: Sale, 519 sh ($45K)2026-07-06: Sale, 387 sh ($32K)2026-07-06: Sale, 313 sh ($26K)2026-07-06: Option exercise, 2,226 sh ($0)2026-07-06: Option exercise, 2,813 sh ($0)2026-06-17: Sale, 6,600 sh ($518K)2026-06-17: Option exercise, 8,510 sh ($396K)2026-06-17: Sale, 1,850 sh ($147K)2026-06-17: Sale, 1,703 sh ($134K)2026-06-17: Option exercise, 2,012 sh ($94K)2026-06-17: Sale, 309 sh ($24K)2026-06-17: Option exercise, 8,510 sh ($0)2026-06-17: Option exercise, 2,012 sh ($0)2026-05-15: Sale, 2,356 sh ($170K)2026-05-15: Option exercise, 2,812 sh ($72K)2026-05-15: Sale, 456 sh ($33K)2026-05-15: Option exercise, 2,812 sh ($0)2026-05-08: Sale, 1,900 sh ($151K)2026-05-08: Option exercise, 2,740 sh ($128K)2026-05-08: Sale, 840 sh ($66K)2026-05-08: Sale, 600 sh ($48K)2026-05-08: Option exercise, 800 sh ($37K)2026-05-08: Sale, 200 sh ($16K)2026-05-08: Option exercise, 2,740 sh ($0)2026-05-08: Option exercise, 800 sh ($0)2026-04-06: Sale, 1,443 sh ($101K)2026-04-06: Option exercise, 2,265 sh ($89K)2026-04-06: Sale, 822 sh ($57K)2026-04-06: Option exercise, 2,265 sh ($0)2026-02-19: Sale, 1,629 sh ($114K)2026-02-19: Sale, 590 sh ($41K)2026-02-19: Sale, 588 sh ($40K)2026-02-19: Sale, 212 sh ($15K)2026-02-18: Sale, 3,081 sh ($214K)2026-02-17: Sale, 2,811 sh ($195K)2026-02-17: Option exercise, 2,813 sh ($72K)2026-02-17: Sale, 2 sh ($140)2026-02-17: Option exercise, 2,813 sh ($0)2026-01-09: Sale, 1,521 sh ($118K)2026-01-09: Sale, 686 sh ($54K)2026-01-09: Sale, 107 sh ($9K)2026-01-08: Sale, 2,482 sh ($190K)2026-01-08: Sale, 1,286 sh ($98K)2026-01-08: Sale, 265 sh ($20K)2026-01-07: Sale, 1,638 sh ($126K)2026-01-07: Sale, 1,503 sh ($116K)2026-01-07: Option exercise, 2,625 sh ($100K)2026-01-07: Sale, 949 sh ($74K)2026-01-07: Sale, 471 sh ($36K)2026-01-07: Option exercise, 751 sh ($29K)2026-01-07: Sale, 269 sh ($21K)2026-01-07: Sale, 38 sh ($3K)2026-01-07: Sale, 11 sh ($869)2026-01-07: Option exercise, 2,625 sh ($0)2026-01-07: Option exercise, 751 sh ($0)2026-01-06: Sale, 1,739 sh ($134K)2026-01-05: Option exercise, 2,266 sh ($89K)2026-01-05: Sale, 1,123 sh ($84K)2026-01-05: Sale, 1,035 sh ($79K)2026-01-05: Sale, 108 sh ($8K)2026-01-05: Option exercise, 2,266 sh ($0)2026-01-02: Award / grant, 42,500 sh ($0)2026-01-02: Award / grant, 17,000 sh ($0)2025-11-17: Sale, 1,843 sh ($139K)2025-11-17: Option exercise, 2,812 sh ($72K)2025-11-17: Sale, 777 sh ($59K)2025-11-17: Sale, 192 sh ($15K)2025-11-17: Option exercise, 2,812 sh ($0)2025-10-07: Option exercise, 3,375 sh ($129K)2025-10-07: Sale, 1,757 sh ($110K)2025-10-07: Sale, 1,306 sh ($83K)2025-10-07: Sale, 312 sh ($20K)2025-10-07: Option exercise, 3,375 sh ($0)2025-10-06: Sale, 2,266 sh ($147K)2025-10-06: Option exercise, 2,266 sh ($89K)2025-10-06: Option exercise, 2,266 sh ($0)2025-10-03: Option exercise, 18,124 sh ($714K)2025-10-03: Sale, 7,400 sh ($492K)2025-10-03: Sale, 6,124 sh ($401K)2025-10-03: Sale, 3,100 sh ($200K)2025-10-03: Sale, 1,500 sh ($101K)2025-10-03: Option exercise, 2,266 sh ($89K)2025-10-03: Option exercise, 2,265 sh ($89K)2025-10-03: Sale, 906 sh ($60K)2025-10-03: Sale, 877 sh ($58K)2025-10-03: Sale, 838 sh ($55K)2025-10-03: Sale, 824 sh ($54K)2025-10-03: Sale, 550 sh ($35K)2025-10-03: Sale, 536 sh ($35K)2025-10-03: Option exercise, 18,124 sh ($0)2025-10-03: Option exercise, 2,266 sh ($0)2025-10-03: Option exercise, 2,265 sh ($0)2025-09-12: Sale, 22,117 sh ($1.4M)2025-09-12: Option exercise, 22,661 sh ($863K)2025-09-12: Sale, 1,019 sh ($62K)2025-09-12: Sale, 905 sh ($55K)2025-09-12: Option exercise, 1,019 sh ($39K)2025-09-12: Option exercise, 905 sh ($34K)2025-09-12: Sale, 544 sh ($34K)2025-09-12: Option exercise, 1,019 sh ($0)2025-09-12: Option exercise, 905 sh ($0)2025-09-12: Option exercise, 22,661 sh ($0)2025-09-11: Sale, 17,838 sh ($1.1M)2025-09-11: Option exercise, 17,838 sh ($680K)2025-09-11: Sale, 2,470 sh ($151K)2025-09-11: Sale, 2,356 sh ($144K)2025-09-11: Option exercise, 2,470 sh ($94K)2025-09-11: Option exercise, 2,356 sh ($90K)2025-09-11: Option exercise, 2,470 sh ($0)2025-09-11: Option exercise, 17,838 sh ($0)2025-09-11: Option exercise, 2,356 sh ($0)2025-08-15: Sale, 2,813 sh ($137K)2025-08-15: Option exercise, 2,813 sh ($72K)2025-08-15: Option exercise, 2,813 sh ($0)2025-05-16: Sale, 883 sh ($41K)2025-05-16: Option exercise, 883 sh ($23K)2025-05-16: Option exercise, 883 sh ($0)2025-05-15: Sale, 1,929 sh ($89K)2025-05-15: Option exercise, 1,929 sh ($50K)2025-05-15: Option exercise, 1,929 sh ($0)2025-03-12: Sale, 13,126 sh ($700K)2025-03-12: Option exercise, 13,126 sh ($433K)2025-03-12: Sale, 2,395 sh ($127K)2025-03-12: Option exercise, 2,395 sh ($79K)2025-03-12: Option exercise, 2,395 sh ($0)2025-03-12: Option exercise, 13,126 sh ($0)2025-03-11: Sale, 5,662 sh ($300K)2025-03-11: Option exercise, 5,662 sh ($187K)2025-03-11: Sale, 1,719 sh ($91K)2025-03-11: Option exercise, 1,719 sh ($57K)2025-03-11: Option exercise, 1,719 sh ($0)2025-03-11: Option exercise, 5,662 sh ($0)2025-03-10: Sale, 45,392 sh ($2.4M)2025-03-10: Option exercise, 45,392 sh ($1.5M)2025-03-10: Sale, 11,398 sh ($605K)2025-03-10: Sale, 7,762 sh ($412K)2025-03-10: Option exercise, 11,398 sh ($376K)2025-03-10: Option exercise, 11,249 sh ($289K)2025-03-10: Sale, 3,487 sh ($182K)2025-03-10: Option exercise, 11,398 sh ($0)2025-03-10: Option exercise, 11,249 sh ($0)2025-03-10: Option exercise, 45,392 sh ($0)2025-02-20: Sale, 1,614 sh ($81K)2025-02-19: Sale, 1,333 sh ($67K)2025-01-08: Sale, 1,998 sh ($89K)2025-01-07: Sale, 1,543 sh ($70K)2025-01-03: Award / grant, 45,000 sh ($0)2025-01-03: Award / grant, 18,000 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-17PTCTSale1,844 @ $72.39$133K−1.7% of holding106,241Form 4
2026-08-17PTCTSale969 @ $72.90$71K−0.9% of holding105,272Form 4
2026-07-06PTCTSale1,036 @ $84.41$87K−1.0% of holding106,662Form 4
2026-07-06PTCTSale833 @ $84.41$70K−0.8% of holding106,392Form 4
2026-07-06PTCTSale745 @ $86.38$64K−0.7% of holding105,272Form 4
2026-07-06PTCTSale645 @ $85.84$55K−0.6% of holding106,017Form 4
2026-07-06PTCTSale601 @ $86.38$52K−0.6% of holding105,272Form 4
2026-07-06PTCTSale519 @ $85.84$45K−0.5% of holding105,873Form 4
2026-07-06PTCTSale387 @ $83.10$32K−0.4% of holding107,698Form 4
2026-07-06PTCTSale313 @ $83.10$26K−0.3% of holding107,225Form 4
2026-06-17PTCTSale6,600 @ $78.50$518K−5.8% of holding107,122Form 4
2026-06-17PTCTSale1,850 @ $79.24$147K−1.7% of holding105,272Form 4
2026-06-17PTCTSale1,703 @ $78.50$134K−1.6% of holding105,581Form 4
2026-06-17PTCTSale309 @ $79.25$24K−0.3% of holding105,272Form 4
2026-05-15PTCTSale2,356 @ $72.08$170K−2.2% of holding105,668Form 4
2026-05-15PTCTSale456 @ $72.67$33K−0.4% of holding105,212Form 4
2026-05-08PTCTSale1,900 @ $79.31$151K−1.8% of holding105,212Form 4
2026-05-08PTCTSale840 @ $78.23$66K−0.8% of holding107,112Form 4
2026-05-08PTCTSale600 @ $79.28$48K−0.6% of holding105,212Form 4
2026-05-08PTCTSale200 @ $78.00$16K−0.2% of holding105,812Form 4
2026-04-06PTCTSale1,443 @ $69.75$101K−1.4% of holding105,212Form 4
2026-04-06PTCTSale822 @ $68.91$57K−0.8% of holding106,655Form 4
2026-02-19PTCTSale1,629 @ $69.82$114K−1.5% of holding106,014Form 4
2026-02-19PTCTSale590 @ $69.82$41K−0.6% of holding105,212Form 4
2026-02-19PTCTSale588 @ $68.54$40K−0.5% of holding107,643Form 4
2026-02-19PTCTSale212 @ $68.54$15K−0.2% of holding105,802Form 4
2026-02-18PTCTSale3,081 @ $69.36$214K−2.8% of holding108,231Form 4
2026-02-17PTCTSale2,811 @ $69.29$195K−2.5% of holding111,314Form 4
2026-02-17PTCTSale2 @ $70.13$140−0.0% of holding111,312Form 4
2026-01-09PTCTSale1,521 @ $77.46$118K−1.3% of holding112,105Form 4
2026-01-09PTCTSale686 @ $78.71$54K−0.6% of holding111,419Form 4
2026-01-09PTCTSale107 @ $79.52$9K−0.1% of holding111,312Form 4
2026-01-08PTCTSale2,482 @ $76.56$190K−2.1% of holding115,177Form 4
2026-01-08PTCTSale1,286 @ $76.45$98K−1.1% of holding113,626Form 4
2026-01-08PTCTSale265 @ $77.07$20K−0.2% of holding114,912Form 4
2026-01-07PTCTSale1,638 @ $77.11$126K−1.4% of holding118,646Form 4
2026-01-07PTCTSale1,503 @ $77.48$116K−1.3% of holding117,659Form 4
2026-01-07PTCTSale949 @ $77.91$74K−0.8% of holding117,697Form 4
2026-01-07PTCTSale471 @ $77.10$36K−0.4% of holding117,939Form 4
2026-01-07PTCTSale269 @ $77.92$21K−0.2% of holding117,670Form 4
2026-01-07PTCTSale38 @ $78.60$3K−0.0% of holding117,659Form 4
2026-01-07PTCTSale11 @ $78.98$869−0.0% of holding117,659Form 4
2026-01-06PTCTSale1,739 @ $76.95$134K−1.4% of holding119,162Form 4
2026-01-05PTCTSale1,123 @ $74.92$84K−0.9% of holding122,044Form 4
2026-01-05PTCTSale1,035 @ $76.10$79K−0.8% of holding121,009Form 4
2026-01-05PTCTSale108 @ $76.79$8K−0.1% of holding120,901Form 4
2025-11-17PTCTSale1,843 @ $75.64$139K−1.7% of holding104,870Form 4
2025-11-17PTCTSale777 @ $76.53$59K−0.7% of holding104,093Form 4
2025-11-17PTCTSale192 @ $77.18$15K−0.2% of holding103,901Form 4
2025-10-07PTCTSale1,757 @ $62.89$110K−1.6% of holding105,519Form 4
2025-10-07PTCTSale1,306 @ $63.80$83K−1.2% of holding104,213Form 4
2025-10-07PTCTSale312 @ $64.97$20K−0.3% of holding103,901Form 4
2025-10-06PTCTSale2,266 @ $65.07$147K−2.1% of holding103,901Form 4
2025-10-03PTCTSale7,400 @ $66.44$492K−6.6% of holding105,401Form 4
2025-10-03PTCTSale6,124 @ $65.47$401K−5.1% of holding112,801Form 4
2025-10-03PTCTSale3,100 @ $64.43$200K−2.5% of holding118,925Form 4
2025-10-03PTCTSale1,500 @ $67.15$101K−1.4% of holding103,901Form 4
2025-10-03PTCTSale906 @ $66.63$60K−0.9% of holding103,901Form 4
2025-10-03PTCTSale877 @ $66.67$58K−0.8% of holding103,901Form 4
2025-10-03PTCTSale838 @ $65.72$55K−0.8% of holding104,778Form 4
2025-10-03PTCTSale824 @ $65.73$54K−0.8% of holding104,807Form 4
2025-10-03PTCTSale550 @ $64.44$35K−0.5% of holding105,616Form 4
2025-10-03PTCTSale536 @ $64.43$35K−0.5% of holding105,631Form 4
2025-09-12PTCTSale22,117 @ $61.33$1.4M−17.5% of holding104,445Form 4
2025-09-12PTCTSale1,019 @ $61.31$62K−1.0% of holding103,901Form 4
2025-09-12PTCTSale905 @ $61.21$55K−0.9% of holding103,901Form 4
2025-09-12PTCTSale544 @ $62.09$34K−0.5% of holding103,901Form 4
2025-09-11PTCTSale17,838 @ $61.00$1.1M−14.7% of holding103,901Form 4
2025-09-11PTCTSale2,470 @ $61.00$151K−2.3% of holding103,901Form 4
2025-09-11PTCTSale2,356 @ $61.00$144K−2.2% of holding103,901Form 4
2025-08-15PTCTSale2,813 @ $48.58$137K−2.6% of holding103,901Form 4
2025-05-16PTCTSale883 @ $46.02$41K−0.8% of holding103,901Form 4
2025-05-15PTCTSale1,929 @ $46.18$89K−1.8% of holding103,901Form 4
2025-03-12PTCTSale13,126 @ $53.31$700K−11.2% of holding103,901Form 4
2025-03-12PTCTSale2,395 @ $53.23$127K−2.3% of holding103,901Form 4
2025-03-11PTCTSale5,662 @ $53.02$300K−5.2% of holding103,901Form 4
2025-03-11PTCTSale1,719 @ $53.01$91K−1.6% of holding103,901Form 4
2025-03-10PTCTSale45,392 @ $53.15$2.4M−30.4% of holding103,901Form 4
2025-03-10PTCTSale11,398 @ $53.12$605K−9.9% of holding103,901Form 4
2025-03-10PTCTSale7,762 @ $53.05$412K−7.0% of holding103,901Form 4
74 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-17PTCTOption exercise2,813108,085Form 4
2026-08-17PTCTOption exercise2,81316,876Form 4
2026-07-06PTCTOption exercise2,813108,085Form 4
2026-07-06PTCTOption exercise2,266107,538Form 4
2026-07-06PTCTOption exercise2,2264,532Form 4
2026-07-06PTCTOption exercise2,81328,125Form 4
2026-06-17PTCTOption exercise8,510113,722Form 4
2026-06-17PTCTOption exercise2,012107,284Form 4
2026-06-17PTCTOption exercise8,51032,950Form 4
2026-06-17PTCTOption exercise2,01230,938Form 4
2026-05-15PTCTOption exercise2,812108,024Form 4
2026-05-15PTCTOption exercise2,81219,689Form 4
2026-05-08PTCTOption exercise2,740107,952Form 4
2026-05-08PTCTOption exercise800106,012Form 4
2026-05-08PTCTOption exercise2,74042,260Form 4
2026-05-08PTCTOption exercise80041,460Form 4
2026-04-06PTCTOption exercise2,265107,477Form 4
2026-04-06PTCTOption exercise2,2656,798Form 4
2026-02-17PTCTOption exercise2,813114,125Form 4
2026-02-17PTCTOption exercise2,81322,501Form 4
2026-01-07PTCTOption exercise2,625120,284Form 4
2026-01-07PTCTOption exercise751118,410Form 4
2026-01-07PTCTOption exercise2,625751Form 4
2026-01-07PTCTOption exercise7510Form 4
2026-01-05PTCTOption exercise2,266123,167Form 4
2026-01-05PTCTOption exercise2,2669,063Form 4
2026-01-02PTCTAward / grant42,50042,500Form 4
2026-01-02PTCTAward / grant17,000120,901Form 4
2025-11-17PTCTOption exercise2,812106,713Form 4
2025-11-17PTCTOption exercise2,81225,314Form 4
2025-10-07PTCTOption exercise3,375107,276Form 4
2025-10-07PTCTOption exercise3,3753,376Form 4
2025-10-06PTCTOption exercise2,266106,167Form 4
2025-10-06PTCTOption exercise2,26611,329Form 4
2025-10-03PTCTOption exercise18,124122,025Form 4
2025-10-03PTCTOption exercise2,266106,167Form 4
2025-10-03PTCTOption exercise2,265106,166Form 4
2025-10-03PTCTOption exercise18,12418,126Form 4
2025-10-03PTCTOption exercise2,26615,860Form 4
2025-10-03PTCTOption exercise2,26513,595Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.