Thomas Unterman - 27 Oct 2025 Form 4 Insider Report for BLACKLINE, INC. (BL)

Reporting relationship: Director
Issuer ticker: BL
Reported as of: 27 Oct 2025
Net transaction value: -$50,050
SEC form: 4
Accepted by SEC: 28 Oct 2025, 16:16:16 UTC
Prior SEC filing: 24 Sep 2025
Source filing: View source filing
Reporting owner signature: /s/ Karole Morgan-Prager, Attorney-in-Fact

Key filing fact

Thomas Unterman filed Form 4 for BLACKLINE, INC. (BL) on 28 Oct 2025.

Key facts

This page summarizes Thomas Unterman's Form 4 filing for BLACKLINE, INC. (BL).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 28 Oct 2025, 16:16.

Change

Previous filing in this sequence was filed on 24 Sep 2025.
Current net transaction value: -$50,050.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001299455 Primary reporting owner

Unterman Thomas

Relationship: Director
Address: 21300 VICTORY BLVD., 12TH FLOOR, WOODLAND HILLS
Signature: /s/ Karole Morgan-Prager, Attorney-in-Fact
Signature date: 28 Oct 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

BL transaction

Common Stock

Sale

Transaction value: $50,050
Shares: -910
Change %: -2.1%
Price: $55.00
Shares after: 41,835
Date: 27 Oct 2025
Ownership: ETU Rustic Canyon Trust
Footnotes: F1

BL holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 58,636
Date: 27 Oct 2025
Ownership: Direct

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 1 footnote

Footnote F1

The transaction reported on this Form 4 was effectuated pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 21, 2024.