[Form 4] BlackLine, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Director David J. Henshall reported a purchase of 10,000 shares of BlackLine, Inc. (BL) on 08/08/2025 at a weighted average price of $48.60 per share (range $48.49–$48.62). The purchase increased his directly held shares to 16,378. The Form 4 shows the acquisition entry and includes an explanation that the reported price is a weighted average of purchases within the stated range.

The filing was submitted by an attorney-in-fact on behalf of the reporting person and discloses only the non-derivative purchase transaction; no derivative transactions or other material events are reported in this document.

Positive

• Director David J. Henshall increased direct ownership by acquiring 10,000 shares

Negative

• None.

Insights

Securities Analyst

Insider purchase of 10,000 BlackLine shares at a weighted average $48.60 increases direct holdings to 16,378.

The Form 4 documents a straightforward non-derivative acquisition on 08/08/2025 by Director David J. Henshall. The filing clarifies the weighted average purchase price and provides the underlying price range of $48.49 to $48.62. From a reporting perspective, this is a routine Section 16 disclosure showing increased insider ownership; the filing contains no additional transactions or derivative positions.

Corporate Governance Expert

Director-level purchase disclosed; filing is a standard Form 4 showing increased direct ownership without other material changes.

The document identifies HENSHALL DAVID J as the reporting person and lists his relationship to the issuer as a director. The entry lists transaction code "P" and shows acquisition of 10,000 common shares, with post-transaction direct holdings of 16,378 shares. The filing was executed via attorney-in-fact signature. No departures, awards, or derivative exercises are included.

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
Estimated average burden
hours per response:			0.5

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^*

HENSHALL DAVID J

(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)

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

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

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	08/08/2025		P		10,000	A	$48.6(1)	16,378	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 purchase price represents the weighted average price of shares purchased ranging from $48.49 to $48.62 per share, and is rounded to the nearest tenth of a cent. Upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer, the reporting person will provide full information regarding the number of shares purchased at each separate price within the range set forth in this Form 4.

	/s/ Karole Morgan-Prager, Attorney-in-Fact	08/11/2025
	** 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) disclose on the Form 4?

Director David J. Henshall purchased 10,000 shares of BlackLine common stock on 08/08/2025, recorded as an acquisition on the Form 4.

At what price were the BlackLine (BL) shares purchased?

Weighted average price $48.60 per share, with purchases ranging from $48.49 to $48.62 as disclosed in the Form 4.

How many BlackLine shares does the reporting person own after the transaction?

16,378 shares held directly following the reported acquisition.

Who is the reporting person on the Form 4 for BL?

HENSHALL DAVID J, identified as a director of BlackLine, Inc.

Was the Form 4 signed by the reporting person?

The Form 4 was signed by an attorney-in-fact, Karole Morgan-Prager, on behalf of the reporting person as indicated in the filing.