BlackLine (BL) CAO records small open-market sale of 459 shares

Q: Was the BLACKLINE (BL) insider transaction a buy or a sell?

The transaction was a sale . The Form 4 identifies the code "S" and describes it as an open-market or private sale, with 459 shares of BLACKLINE Common Stock sold at $30.255 per share.

Q: Did the BLACKLINE (BL) insider transaction involve derivatives or only common stock?

The transaction involved only Common Stock and is classified as non-derivative. No options, warrants, or other derivative securities were reported, and the derivative position summary in the filing is empty.

Filing Impact

(Neutral)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

BLACKLINE, INC. Chief Accounting Officer Michelle D. Stalick sold 459 shares of Common Stock in an open-market transaction at $30.255 per share on May 18, 2026. After this sale, she directly holds 38,014 shares, indicating a relatively small reduction in her overall position.

Insights

Small, routine insider sale with limited impact on overall holdings.

Chief Accounting Officer Michelle D. Stalick executed an open-market sale of 459 shares of BLACKLINE, INC. Common Stock at $30.255 per share. The transaction is classified as a non-derivative sale, meaning it involved existing common shares rather than options or other derivatives.

Following the sale, Stalick continues to directly own 38,014 shares, so the transaction represents only a small portion of her stake. There are no derivative positions reported in this filing, and no footnotes describing special arrangements such as trading plans, which frames this as a routine portfolio move rather than a transformational event.

Insider Trade Summary

Net Seller: 459 shares ($13,887)

Net Sell 1 txn

Insider Stalick Michelle D

Role Chief Accounting Officer

Sold 459 shs ($14K)

Type	Security	Shares	Price	Value
Sale	Common Stock	459	$30.255	$14K

Holdings After Transaction: Common Stock — 38,014 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 459 shares Sale price per share: $30.255 per share Shares held after sale: 38,014 shares +1 more

4 metrics

Shares sold 459 shares Open-market sale on May 18, 2026

Sale price per share $30.255 per share Open-market sale of Common Stock

Shares held after sale 38,014 shares Direct ownership following the transaction

Net buy/sell shares -459 shares Net effect of reported transactions in this filing

Key Terms

open-market sale, Common Stock, non-derivative

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.

non-derivative financial

"transaction_type: "non-derivative""

Form 4 Insider Transactions: What Each Field Means →

05/20/2026 - 04:15 PM

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)
05/18/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/18/2026		S		459	D	$30.255	38,014	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

	/s/ Karole Morgan-Prager, Attorney-in-Fact	05/20/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

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

BLACKLINE, INC. reported that Chief Accounting Officer Michelle D. Stalick sold 459 shares of Common Stock in an open-market transaction. The sale was recorded at a price of $30.255 per share and classified as a non-derivative transaction.

How many BLACKLINE (BL) shares did the CAO sell and at what price?

Michelle D. Stalick sold 459 shares of BLACKLINE Common Stock at $30.255 per share. The filing identifies this as an open-market sale of non-derivative common shares, reflecting a modest adjustment to her personal holdings.

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

After the reported transaction, Michelle D. Stalick directly holds 38,014 shares of BLACKLINE Common Stock. This indicates the 459-share sale was small relative to her remaining position, suggesting only a limited change in her overall exposure.

Was the BLACKLINE (BL) insider transaction a buy or a sell?

The transaction was a sale. The Form 4 identifies the code "S" and describes it as an open-market or private sale, with 459 shares of BLACKLINE Common Stock sold at $30.255 per share.

Did the BLACKLINE (BL) insider transaction involve derivatives or only common stock?

The transaction involved only Common Stock and is classified as non-derivative. No options, warrants, or other derivative securities were reported, and the derivative position summary in the filing is empty.