[Form 4] BlackLine, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Insider withholding reduced holdings after RSU vesting. BlackLine, Inc. director and Chief Customer Officer Jimmy C. Duan had 1,190 shares withheld to cover taxes when restricted stock units vested, at an indicated per-share value of $52.23. After the withholding, Mr. Duan beneficially owned 77,462 shares directly. The transaction is reported as a disposition tied to vesting-related tax withholding rather than an open-market sale.

Insights

Financial Analyst

Routine RSU tax withholding; immaterial to company fundamentals.

The filing documents a common compensation-related disposition: 1,190 shares withheld to satisfy tax obligations from RSU vesting at a reported price of $52.23. This reduces the reporting person's direct share count to 77,462 shares. There is no indication of voluntary market selling or change in control. From a financial perspective, this is a mechanical ownership adjustment with no disclosed impact on BlackLine's operating results or capital structure.

Corporate Governance Expert

Standard insider reporting for RSU vesting; disclosure meets Section 16 requirements.

The Form 4 shows the reporting of a disposition code tied to tax withholding on RSU vesting and includes an explanatory footnote. The form is filed individually and signed via attorney-in-fact. This is a routine disclosure reflecting executive compensation mechanics and does not signal governance concerns or unusual insider trading behavior based on the information provided.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Duan Jimmy C

(Last) (First) (Middle)

21300 VICTORY BLVD., 12TH FLOOR

(Street)

WOODLAND HILLS CA 91367

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
BLACKLINE, INC. [ BL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Customer Officer

3. Date of Earliest Transaction (Month/Day/Year)
08/20/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/20/2025		F		1,190(1)	D	$52.23	77,462	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The reported shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of restricted stock units ("RSUs").

	/s/ Karole Morgan-Prager, Attorney-in-Fact	08/21/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transaction did BlackLine (BL) insider Jimmy C. Duan report?

The Form 4 reports 1,190 shares were withheld to cover taxes on vested restricted stock units; it is recorded as a disposition at $52.23 per share.

How many shares does Jimmy C. Duan beneficially own after the transaction?

After the tax-withholding disposition, the reporting person beneficially owns 77,462 shares directly.

Was this an open-market sale or related to compensation?

The filing explains the shares were withheld to cover the reporting person's tax liability from RSU vesting, not a voluntary open-market sale.

Who signed the Form 4 filing for the reporting person?

The Form 4 was signed by Karole Morgan-Prager, Attorney-in-Fact on behalf of the reporting person.