[Form 4] BlackLine, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Michelle D. Stalick, Chief Accounting Officer of BlackLine, Inc. (BL), reported multiple dispositions of common stock on 08/20/2025 at a price of $52.23 per share. The filing indicates shares were withheld to cover the reporting person’s tax liability in connection with the vesting of restricted stock units (RSUs). The Form 4 lists four separate disposition entries and shows remaining beneficial ownership figures after the transactions. The filing was signed by an attorney-in-fact on 08/21/2025. The document provides contact/address details for the reporting person but contains no financial results or forward-looking statements.

Positive

• Timely disclosure of insider transactions consistent with Section 16 reporting requirements
• Shares withheld for tax withholding indicate the dispositions arose from RSU vesting rather than discretionary sales

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Routine insider tax-withholding dispositions tied to RSU vesting; governance disclosure appears standard.

The Form 4 documents routine withholding of shares to satisfy tax obligations arising from vesting of restricted stock units for a senior officer. Such withholdings are common and typically do not reflect voluntary open-market selling by the officer. The filing discloses transaction date (08/20/2025), per-share price ($52.23) and that the transaction was executed via withholding. From a governance perspective, timely reporting and use of withholding to satisfy taxes are standard practices and suggest adherence to Section 16 reporting requirements.

Securities Analyst

TL;DR: Material impact is neutral; the transactions are disposals via tax withholding, not new market sales.

The report shows multiple disposition entries tied to RSU vesting rather than discretionary sales. The per-share price is explicit at $52.23 and the dispositions occurred on 08/20/2025. Because the transactions are tax-related withholdings, they are unlikely to change the company’s capital structure or signal a change in executive confidence. The filing does not disclose sizes relative to total outstanding shares or company ownership percentages, so investor impact appears limited based on the provided data.

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

OMB APPROVAL

OMB Number:			3235-0287
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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^*

Stalick Michelle D

(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 Accounting 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		172(1)	D	$52.23	25,063	D
Common Stock	08/20/2025		F		143(1)	D	$52.23	24,920	D
Common Stock	08/20/2025		F		161(1)	D	$52.23	24,759	D
Common Stock	08/20/2025		F		265(1)	D	$52.23	24,494	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 did Michelle D. Stalick report on Form 4 for BL?

The report discloses multiple dispositions of common stock on 08/20/2025 at a price of $52.23 per share, related to tax withholding on vested RSUs.

Why were the shares disposed according to the filing?

The filing states the shares were withheld to cover the reporting person’s tax liability in connection with the vesting of restricted stock units.

How many disposition entries are shown and who signed the form?

The Form 4 shows four disposition entries and was signed by an attorney-in-fact on 08/21/2025.

Does the filing indicate these were open-market sales?

No. The filing explicitly states the shares were withheld for tax purposes, not sold in open-market transactions.

What is the reporting person’s role at BlackLine, Inc.?

The reporting person, Michelle D. Stalick, is listed as the Chief Accounting Officer and an officer of BlackLine, Inc.