SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES 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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1. Name and Address of Reporting Person* Duan Jimmy C (Last) (First) (Middle) 21300 VICTORY BLVD STE 12 (Street) WOODLAND HILLS CA 91367 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 05/06/2024	3. Issuer Name and Ticker or Trading Symbol BLACKLINE, INC. [ BL ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Chief Customer Officer	5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

No securities are beneficially owned.

	/s/ Karole Morgan-Prager, Attorney-in-Fact	05/08/2024
	** 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 5 (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.

Ex 24.1

LIMITED POWER OF ATTORNEY - SECURITIES LAW COMPLIANCE
The undersigned, as an officer or director of BlackLine, Inc. (the
"Corporation"), hereby constitutes and appoints Karole Morgan-Prager, the
undersigned's true and lawful attorney-in-fact and agent to complete and
execute such Forms 144, Form ID, Forms 3, 4 and 5 and other forms as such
attorney shall in her discretion determine to be required or advisable pursuant
to Rule 144 promulgated under the Securities Act of 1933, as amended, Section
16 of the Securities Exchange Act of 1934, as amended, and the rules and
regulations promulgated thereunder, or any successor laws and regulations, as a
consequence of the undersigned's ownership, acquisition or disposition of
securities of the Corporation, and to do all acts necessary in order to file
such forms with the Securities and Exchange Commission, any securities exchange
or national association, the Corporation and such other person or agency as the
attorney shall deem appropriate. The undersigned hereby ratifies and confirms
all that said attorneys-in-fact and agents shall do or cause to be done by
virtue hereof. The undersigned acknowledges that the foregoing
attorney-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934 (as amended). This Limited Power of Attorney shall remain
in full force and effect until the undersigned is no longer required to file
Forms 3, 4 and 5 with respect to the undersigned's holdings of and transactions
in securities issued by the Corporation unless earlier revoked by the
undersigned in a writing delivered to the foregoing attorneys-in-fact. This
Limited Power of Attorney is executed as of the date set forth below. /s/ Jimmy
C. Duan Print Name: Jimmy C. Duan April 4, 2024