Form 4 for BL BLACKLINE, INC.

Accepted 2025-05-21 00:00:00 ET · period of report 2025-05-20 · accession 0001127602-25-015172 · 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
M	2025-05-21	2025-05-20	BL	Stalick Michelle D	CAO	F - Tax	$55.43	-1,535	27.2K	-5%	-$85.1K

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	2025-05-20	F	D	1,059	$55.43	26,030	D	—	—	(F1) The reported shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units ("RSUs").
2	Common	Common Stock	2025-05-20	F	D	172	$55.43	27,393	D	—	—	(F1) The reported shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units ("RSUs").
3	Common	Common Stock	2025-05-20	F	D	161	$55.43	27,089	D	—	—	(F1) The reported shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units ("RSUs").
4	Common	Common Stock	2025-05-20	F	D	143	$55.43	27,250	D	—	—	(F1) The reported shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units ("RSUs").