Form 4 for PTCT PTC THERAPEUTICS, INC.

Accepted 2026-04-03 17:20:06 ET · period of report 2026-04-01 · accession 0001578850-26-000012 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
MT	2026-04-03 17:20	2026-04-01	PTCT	Almstead Neil Gregory	CHIEF TECHNICAL OPS Off	S - Sale	$69.04	-52.0K	60.1K	-46%	-$3.59M

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-04-01	S	D	39,393	$68.89	72,747	D	—	—	(F1) This transaction was effected pursuant to a written Rule 10b5-1 plan adopted by the reporting person on November 11, 2025. (F2) This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $68.26 to $69.26 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
2	Common	Common Stock	2026-04-01	S	D	12,530	$69.50	60,217	D	—	—	(F1) This transaction was effected pursuant to a written Rule 10b5-1 plan adopted by the reporting person on November 11, 2025. (F3) This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $69.26 to $70.13 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
3	Common	Common Stock	2026-04-01	S	D	80	$70.30	60,137	D	—	—	(F1) This transaction was effected pursuant to a written Rule 10b5-1 plan adopted by the reporting person on November 11, 2025.