Form 4 for NBP NovaBridge Biosciences

Accepted 2026-08-25 16:15:13 ET · period of report 2026-08-22 · accession 0001992908-26-000013 · 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
D	2026-08-25 16:15	2026-08-22	NBP	Lenz Robert A.	Dir	M - OptEx	—	+17.2K	17.2K	New	—
D	2026-08-25 16:15	2026-08-22	NBP	Lenz Robert A.	Dir	M - OptEx	$0.00	-7,486	15.0K	-33%	$0

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	Ordinary Shares	2026-08-22	M	A	17,218	—	17,218	D	—	—	(F1) The Ordinary Shares may be represented by American Depositary Shares ("ADS"). Each 10 ADSs represent 23 Ordinary Shares of the Issuer. (F2) Reported securities are represented by 7,486 ADSs. (F3) Each restricted stock unit ("RSU") represents a contingent right to receive one ADS. (F2) Reported securities are represented by 7,486 ADSs.
2	Derivative	Restricted Share Units	2026-08-22	M	D	7,486	$0.00	14,974	D	— · — to —	7,486 Ordinary Shares	(F3) Each restricted stock unit ("RSU") represents a contingent right to receive one ADS. (F4) Reported securities represent ADSs. (F5) On August 22, 2025, the Reporting Person was granted 22,460 restricted share units ("RSUs"). The RSUs vested or shall vest over three years in three equal annual installments on August 22, 2026, 2027 and 2028. (F5) On August 22, 2025, the Reporting Person was granted 22,460 restricted share units ("RSUs"). The RSUs vested or shall vest over three years in three equal annual installments on August 22, 2026, 2027 and 2028. (F4) Reported securities represent ADSs.