BLTechnologySmall-Cap
BLACKLINE, INC. Insider Trading Activity
Every SEC Form 4 insider transaction reported for BLACKLINE, INC. (BL), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud Research Team · SEC Form 4 & insider trading data analysts
Last updated:
Quick Answer
Are BL insiders buying or selling?
BLACKLINE, INC. insiders reported 5 open-market buys ($1.1M) and 226 sells ($650.9M) across 231 Form 4 filings — a net selling position of $649.8M.
Source: SEC EDGAR Form 4
Key Statistics (as of Jun 8, 2026)
Total Form 4 filings
231
SEC EDGAR
Insider filers
22
Insider buys (5)
$1.1M
Insider sells (226)
$650.9M
Insider sentiment
Net sellingNet insider flow of $649.8M in net selling.
Recent BL insider transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 8, 2026 | Mika Yamamoto | Director | Sale | 3.0K | $28.48 | $85.4K |
| Jun 2, 2026 | Michelle D Stalick | Chief Accounting Officer | Sale | 780 | $30.93 | $24.1K |
| May 22, 2026 | Gregory Hughes | Director | Sale | 1.6K | $30.25 | $49.5K |
| May 20, 2026 | Michelle D Stalick | Chief Accounting Officer | Sale | 459 | $30.26 | $13.9K |
| Oct 28, 2025 | Thomas Unterman | Director | Sale | 910 | $55.00 | $50.0K |
| Sep 24, 2025 | Thomas Unterman | Director | Sale | 7.3K | $55.24 | $400.7K |
| Aug 25, 2025 | Michelle D Stalick | Chief Accounting Officer | Sale | 664 | $54.03 | $35.9K |
| Aug 11, 2025 | David J Henshall | Director | Purchase | 10.0K | $48.60 | $486.0K |
| May 29, 2025 | Michelle D Stalick | Chief Accounting Officer | Sale | 795 | $55.14 | $43.8K |
| May 22, 2025 | Mark Woodhams | Chief Revenue Officer | Sale | 1.9K | $54.65 | $101.4K |
| May 13, 2025 | Michelle D Stalick | Chief Accounting Officer | Sale | 400 | $54.96 | $22.0K |
| Feb 24, 2025 | Mark Woodhams | Chief Revenue Officer | Sale | 9.1K | $49.67 | $451.4K |
| Dec 16, 2024 | Mark Woodhams | Chief Revenue Officer | Sale | 24.4K | $64.32 | $1.6M |
| Nov 12, 2024 | Karole Morgan-Prager | CHIEF LEGAL AND ADMINISTRATIVE | Sale | 50.2K | $60.50 | $3.0M |
| Nov 12, 2024 | Mika Yamamoto | Director | Sale | 3.2K | $62.08 | $199.9K |
| Oct 21, 2024 | Karole Morgan-Prager | CHIEF LEGAL AND ADMINISTRATIVE | Sale | 27.1K | $60.06 | $1.6M |
| Oct 10, 2024 | Karole Morgan-Prager | CHIEF LEGAL AND ADMINISTRATIVE | Sale | 4.2K | $55.18 | $233.2K |
| Oct 4, 2024 | Karole Morgan-Prager | CHIEF LEGAL AND ADMINISTRATIVE | Sale | 5.8K | $55.14 | $318.3K |
| Oct 2, 2024 | Karole Morgan-Prager | CHIEF LEGAL AND ADMINISTRATIVE | Sale | 10.0K | $54.03 | $540.3K |
| Oct 1, 2024 | Karole Morgan-Prager | CHIEF LEGAL AND ADMINISTRATIVE | Sale | 10.0K | $55.00 | $550.0K |
| Oct 1, 2024 | Mark Partin | CHIEF FINANCIAL OFFICER | Sale | 85.3K | $54.84 | $4.7M |
| Sep 30, 2024 | Mark Partin | CHIEF FINANCIAL OFFICER | Sale | 5.6K | $53.00 | $299.3K |
| Aug 22, 2024 | Mark Woodhams | Chief Revenue Officer | Sale | 1.4K | $51.70 | $71.7K |
| Aug 14, 2024 | Barbara Whye | Director | Sale | 5.4K | $52.01 | $279.7K |
| Aug 8, 2024 | Karole Morgan-Prager | CHIEF LEGAL AND ADMINISTRATIVE | Sale | 10.0K | $50.00 | $500.0K |
Showing the 25 most recent of 231 Form 4 filings for BLACKLINE, INC..
Most active BL insiders
- Mark Partin41 filings
- Therese Tucker38 filings
- Thomas Unterman28 filings
- Karole Morgan-Prager23 filings
- Mark Woodhams17 filings
Ask anything about BL insider activity
Use Trabud's AI agent to query BLACKLINE, INC.'s Form 4 history in plain English — "Show me BL CEO purchases this year" or compare it against any other ticker.
Open the AI agentBL insider trading FAQ
Are BLACKLINE, INC. insiders buying or selling?
Across 231 SEC Form 4 filings, BLACKLINE, INC. (BL) insiders reported 5 open-market purchases totaling $1.1M and 226 sales totaling $650.9M. That is a net selling position of $649.8M.
How many insiders trade BL stock?
22 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for BLACKLINE, INC.. The most recent filing was accepted on Jun 8, 2026.
Where does Trabud get BL insider trading data?
All BL insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.
Looking for another company? Browse all tracked companies.