BlackLine (BL) founder Tucker logs 27,072-share bona fide stock gift

Rhea-AI Filing Summary

BLACKLINE, INC. founder and director Therese Tucker reported a disposition of common stock through a bona fide gift. An entity associated with her, the Tucker Family CLAT, transferred 27,072 shares of BlackLine common stock as a charitable gift at no stated price per share.

The filing also updates Tucker’s post-transaction holdings across various direct and trust accounts. Following these updates, she held 351,128 shares directly and, for example, 1,509,881 shares indirectly through the Brian and Therese Tucker Living Trust, along with additional shares in several other family and charitable trusts.

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

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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^*

Tucker Therese

(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
X	Officer (give title below)		Other (specify below)
	Founder

3. Date of Earliest Transaction (Month/Day/Year)
02/18/2026

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	02/18/2026		G(1)		27,072	D	$0	52,444	I	Tucker Family CLAT
Common Stock								351,128	D
Common Stock								100,178	I	Brian and Therese Tucker Charitable Remainder Trust
Common Stock								1,509,881	I	Brian and Therese Tucker Living Trust
Common Stock								0	I	By: CS 2015 GRAT dated 9/28/2015
Common Stock								0	I	By: SAFETY NET GRAT dated 9/28/2015
Common Stock								54,074	I	Claire Seimetz 2015 Trust
Common Stock								577,200	I	Isaac Tucker 2012 Irrevocable Trust
Common Stock								577,200	I	Roseanna Tucker 2012 Irrevocable Trust
Common Stock								874,128	I	Tucker Legacy Trust
Common Stock								129,897	I	Tucker Legacy Trust II
Common Stock								250,916	I	Tucker Seimetz Safety Net Grat

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 reported transaction represents a bona fide gift made by the reporting person.

	/s/ Karole Morgan-Prager, Attorney-in-Fact	02/20/2026
	** 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.

FAQ

What insider transaction did Therese Tucker report for BLACKLINE, INC. (BL)?

Therese Tucker reported a bona fide gift of BlackLine common stock. An entity associated with her, the Tucker Family CLAT, transferred 27,072 shares as a charitable gift, with no purchase or sale of shares for cash reported in this filing.

Was the BlackLine (BL) insider Form 4 a buy or sell transaction?

The Form 4 reports a disposition by gift, not an open-market buy or sell. The Tucker Family CLAT transferred 27,072 BlackLine shares as a bona fide gift, so no sale proceeds or purchase costs are disclosed in connection with this transaction.

How many BlackLine (BL) shares did the Tucker Family CLAT hold after the gift?

After the bona fide gift, the Tucker Family CLAT held 52,444 BlackLine common shares indirectly attributed to Therese Tucker. This reflects the trust’s updated ownership position following the transfer of 27,072 shares reported as a charitable gift in the Form 4.

What are Therese Tucker’s direct BlackLine (BL) holdings after this Form 4?

Following the reported transactions, Therese Tucker directly held 351,128 shares of BlackLine common stock. Additional shares are held indirectly through several family trusts, charitable remainder trusts, and grantor-retained annuity trusts disclosed in the same Form 4 filing.

Which trusts associated with Therese Tucker hold BlackLine (BL) shares?

Trusts listed include the Brian and Therese Tucker Living Trust with 1,509,881 shares, the Tucker Legacy Trust, Tucker Legacy Trust II, the Isaac Tucker 2012 Irrevocable Trust, and the Roseanna Tucker 2012 Irrevocable Trust, among others, all holding BlackLine common stock.

Does the BlackLine (BL) Form 4 show any insider selling for cash?

No cash sales are reported. The only transaction coded with a direction is a bona fide gift of 27,072 shares by the Tucker Family CLAT. Other lines in the filing update post-transaction holdings for Tucker’s direct and indirect ownership positions.