BlackLine director receives 922-share RSU grant

Duncan Storm reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Duncan Storm reported acquisition or exercise transactions in this Form 4 filing.

BLACKLINE, INC. director Duncan Storm reported an initial equity award in the form of 922 restricted stock units of common stock. This grant was made following his appointment to the board on March 11, 2026, under the company’s Outside Director Compensation Policy.

Each restricted stock unit represents a contingent right to receive one share of common stock upon settlement. All 922 units will vest the day prior to BlackLine’s next annual stockholder meeting, subject to Storm’s continued service on the board through that vesting date.

Insider Trade Summary

Grant/Award: 922 shares

Grant/Award 1 txn

Insider Duncan Storm

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	922	$0.00	$0.00

Holdings After Transaction: Common Stock — 922 shares (Direct)

Footnotes (3)

1. F1. This Form 4 reports an initial grant of restricted stock units to Mr. Duncan following his appointment to the Issuer's board of directors on March 11, 2026. The filing was delayed due to a procedural delay in Mr. Duncan receiving the requisite EDGAR access codes from the SEC. This Form 4 was filed promptly upon receipt of the codes.
2. F2. Represents an initial stock unit ("RSU") award issued pursuant to the Issuer's Outside Director Compensation Policy.
3. F3. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement. 100% of the RSUs will vest the day prior to the Issuer's next annual stockholder meeting, subject to the reporting person's continued service through the applicable vesting date.

FAQ

What insider transaction did BlackLine (BL) director Duncan Storm report?

Duncan Storm reported receiving 922 restricted stock units of BlackLine common stock. The award is an initial equity grant tied to his appointment to the board and was made under the company’s Outside Director Compensation Policy as part of standard director compensation.

When was Duncan Storm appointed to BlackLine (BL)’s board of directors?

Duncan Storm was appointed to BlackLine’s board of directors on March 11, 2026. The Form 4 describes an initial restricted stock unit award granted in connection with this appointment, reflecting his new role as an outside director of the company.

How many BlackLine (BL) shares are covered by Duncan Storm’s RSU grant?

The grant covers 922 restricted stock units, each linked to one share of BlackLine common stock. These units represent a contingent right to receive actual shares upon settlement, assuming the vesting conditions described in the filing are satisfied by the director.

When will Duncan Storm’s BlackLine (BL) RSUs vest?

All 922 restricted stock units will vest on the day before BlackLine’s next annual stockholder meeting. Vesting is conditioned on Duncan Storm’s continued service on the board of directors through that date, as outlined in the award’s terms.

What does each BlackLine (BL) RSU granted to Duncan Storm represent?

Each restricted stock unit represents a contingent right to receive one share of BlackLine common stock upon settlement. Actual share delivery occurs after vesting, so the units function as a form of deferred equity compensation for the outside director.

Why was the Form 4 for Duncan Storm’s BlackLine (BL) grant delayed?

The Form 4 was delayed due to a procedural delay in Duncan Storm receiving required EDGAR access codes from the SEC. According to the footnote, the report was filed promptly once those electronic filing credentials became available to the new director.

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Accepted by SEC EDGAR 03/26/2026 - 06:30 PM Learn about SEC filing dates

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^*

Duncan Storm

(Last) (First) (Middle)

21300 VICTORY BLVD., 12TH FLOOR

(Street)

WOODLAND HILLS CALIFORNIA 91367-7734

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/11/2026

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

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

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

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	03/11/2026(1)		A(2)		922(3)	A	$0	922	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. This Form 4 reports an initial grant of restricted stock units to Mr. Duncan following his appointment to the Issuer's board of directors on March 11, 2026. The filing was delayed due to a procedural delay in Mr. Duncan receiving the requisite EDGAR access codes from the SEC. This Form 4 was filed promptly upon receipt of the codes.

2. Represents an initial stock unit ("RSU") award issued pursuant to the Issuer's Outside Director Compensation Policy.

3. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon settlement. 100% of the RSUs will vest the day prior to the Issuer's next annual stockholder meeting, subject to the reporting person's continued service through the applicable vesting date.

	/s/ Karole Morgan-Prager, Attorney-in-Fact	03/26/2026
	** 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.
* Form 4: SEC 1474 (03-26)