Mark Elliott Boulding

Insider

EXEC. VP AND CLO

Trades at: PTCT

30D 90D 1Y

Net shares · 90d

-8.6K

0 buy · 8.6K sell

Net value · 90d

-$639.8K

$0 in · $639.8K out

Sentiment · 90d

Net selling

0% buying · 100% selling

Open-market trades · 90d

0 buy · 8.6K sell

Net buy / sell volume (all companies)

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions · open-market

Include grants & non-market

PTCT Sell·S
May 15, 26

EXEC. VP AND CLO · 10b5-1

$33.1K

456 sh · $72.67

Own -0%
PTCT Sell·S
May 15, 26

EXEC. VP AND CLO · 10b5-1

$169.8K

2.4K sh · $72.08

Own -2%
PTCT Sell·S
May 8, 26

EXEC. VP AND CLO · 10b5-1

$47.6K

600 sh · $79.28

Own -1%
PTCT Sell·S
May 8, 26

EXEC. VP AND CLO · 10b5-1

$15.6K

200 sh · $78.00

Own -0%
PTCT Sell·S
May 8, 26

EXEC. VP AND CLO · 10b5-1

$150.7K

1.9K sh · $79.31

Own -2%
PTCT Sell·S
May 8, 26

EXEC. VP AND CLO · 10b5-1

$65.7K

840 sh · $78.23

Own -1%
PTCT Sell·S
Apr 6, 26

EXEC. VP AND CLO · 10b5-1

$100.6K

1.4K sh · $69.75

Own -1%
PTCT Sell·S
Apr 6, 26

EXEC. VP AND CLO · 10b5-1

$56.6K

822 sh · $68.91

Own -1%

Date▾	Ticker	Role	Type	Shares	Own Δ	Price	Value
May 15, 2026	PTCT	EXEC. VP AND CLO	Sell S	456	-0%	$72.67	$33.1K
May 15, 2026	PTCT	EXEC. VP AND CLO	Sell S	2.4K	-2%	$72.08	$169.8K
May 8, 2026	PTCT	EXEC. VP AND CLO	Sell S	600	-1%	$79.28	$47.6K
May 8, 2026	PTCT	EXEC. VP AND CLO	Sell S	200	-0%	$78.00	$15.6K
May 8, 2026	PTCT	EXEC. VP AND CLO	Sell S	1.9K	-2%	$79.31	$150.7K
May 8, 2026	PTCT	EXEC. VP AND CLO	Sell S	840	-1%	$78.23	$65.7K
Apr 6, 2026	PTCT	EXEC. VP AND CLO	Sell S	1.4K	-1%	$69.75	$100.6K
Apr 6, 2026	PTCT	EXEC. VP AND CLO	Sell S	822	-1%	$68.91	$56.6K

About Mark Elliott Boulding

This profile aggregates every SEC Form 4 insider transaction reported by Mark Elliott Boulding across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.