BlackLine (BL) Chief Accounting Officer sells 780 shares at $30.93

Rhea-AI Filing Summary

BLACKLINE, INC. Chief Accounting Officer Michelle D. Stalick reported an open-market sale of 780 shares of Common Stock at $30.93 per share. After this transaction, she directly holds 36,363 shares of the company’s stock.

Insider Trade Summary

Net Seller: 780 shares ($24,125)

Net Sell 1 txn

Insider Stalick Michelle D

Role Chief Accounting Officer

Sold 780 shs ($24K)

Type	Security	Shares	Price	Value
Sale	Common Stock	780	$30.93	$24K

Holdings After Transaction: Common Stock — 36,363 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 780 shares Sale price: $30.93 per share Shares held after sale: 36,363 shares

3 metrics

Shares sold 780 shares Open-market sale of Common Stock

Sale price $30.93 per share Price for the 780-share sale

Shares held after sale 36,363 shares Direct ownership after transaction

Key Terms

open-market sale, Common Stock, transaction code S

3 terms

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

transaction code S regulatory

"transaction_code: "S""

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Form 4 Insider Transactions: What Each Field Means →

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^*

Stalick Michelle D

(Last) (First) (Middle)

21300 VICTORY BLVD., 12TH FLOOR

(Street)

WOODLAND HILLS CALIFORNIA 91367

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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	06/01/2026		S		780	D	$30.93	36,363	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:

	/s/ Karole Morgan-Prager, Attorney-in-Fact	06/02/2026
	** 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)

FAQ

What insider transaction did BLACKLINE, INC. (BL) report for Michelle D. Stalick?

BLACKLINE, INC. reported that Chief Accounting Officer Michelle D. Stalick sold 780 shares of Common Stock in an open-market transaction. The Form 4 shows this as a sale under transaction code S, categorized as a non-derivative stock transaction.

How many BLACKLINE (BL) shares did Michelle D. Stalick sell and at what price?

Michelle D. Stalick sold 780 shares of BLACKLINE Common Stock at a price of $30.93 per share. The filing identifies this as an open-market sale, using transaction code S and specifying the exact per-share sale price.

How many BLACKLINE (BL) shares does Michelle D. Stalick hold after this Form 4 transaction?

After the reported sale, Michelle D. Stalick directly holds 36,363 shares of BLACKLINE Common Stock. This post-transaction holding figure is shown in the Form 4 as the total shares following the transaction for her direct ownership.

What role does Michelle D. Stalick hold at BLACKLINE (BL) in this Form 4 filing?

In this Form 4, Michelle D. Stalick is identified as an officer of BLACKLINE, serving as Chief Accounting Officer. She is not listed as a director or ten percent owner, and the reported transaction reflects her direct ownership activity.

Was the BLACKLINE (BL) insider transaction by Michelle D. Stalick an open-market sale?

Yes. The transaction is classified as an open-market sale of Common Stock. The Form 4 uses transaction code S and describes it as a “Sale in open market or private transaction,” with 780 shares sold at $30.93 per share.