BL
BLACKLINE, INC. · Technology · Market cap $1.9B
Insiders sold $2.3M net in the last 90 days ·3 sellers, 0 buyers· latest Form 4 filed Aug 28, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$2.9M
reported sales (SEC code S)
Unique Insiders
5
in the rolling window
Latest filing
Sep 4, 2026
Stalick Michelle D
BLACKLINE, INC. (BL) has 65 SEC Form 4 filings (128 transaction rows) in the rolling window, disclosed by 5 distinct insiders. Most recent filing: Sep 4, 2026.
Inside the rolling window, 5 insiders at BLACKLINE, INC. reported no open-market purchases and 13 open-market sales totaling $2.9M. The most active filer is Director Unterman Thomas with 7 filings. Insiders have net sold $2.4M over the trailing 6 months. The most recent open-market filing is a sale of 780 shares by Chief Accounting Officer Stalick Michelle D, dated Aug 27, 2026, worth $26K.
- Industry:Software - Application
- CEO:Owen Ryan
- Employees:1,850
- HQ:Woodland Hills, CA, US
- IPO:2016-10-28
| Source | |||||||
|---|---|---|---|---|---|---|---|
| Chief Accounting Officer | Sale | 780 | $26K | Aug 28 | -0.8% | SEC ↗ | |
Tucker ThereseFirst filing | Director | Sale | 70,000 | $2.2M | Aug 26 | +4.4% | SEC ↗ |
Yamamoto MikaFirst in 3 months | Director | Sale | 3,000 | $85K | Jun 8 | +16.0% | SEC ↗ |
| Chief Accounting Officer | Sale | 780 | $24K | Jun 2 | +7.3% | SEC ↗ | |
HUGHES GREGORYFirst filing | Director | Sale | 1,637 | $50K | May 22 | +13.2% | SEC ↗ |
Stalick Michelle DFirst filing | Chief Accounting Officer | Sale | 459 | $14K | May 20 | +6.1% | SEC ↗ |
| Director | Sale | 910 | $50K | Oct 28 | -40.7% | SEC ↗ | |
Unterman ThomasFirst filing | Director | Sale | 2,730 | $150K | Sep 24 | -39.2% | SEC ↗ |
Unterman ThomasFirst filing | Director | Sale | 910 | $50K | Sep 24 | -39.2% | SEC ↗ |
Unterman ThomasFirst filing | Director | Sale | 910 | $50K | Sep 24 | -39.2% | SEC ↗ |
Unterman ThomasFirst filing | Director | Sale | 885 | $50K | Sep 24 | — | SEC ↗ |
Unterman ThomasFirst filing | Director | Sale | 910 | $50K | Sep 24 | — | SEC ↗ |
Unterman ThomasFirst filing | Director | Sale | 910 | $50K | Sep 24 | — | SEC ↗ |
Congress trading BL 6 all-time
- RRep. Lisa C. McClainPurchase$1,001 - $15,0002025-08-13
- DRep. Tom MalinowskiPurchase$1,001 - $15,0002019-07-02
- DRep. Tom MalinowskiPurchase$15,001 - $50,0002021-01-13
- DRep. Tom MalinowskiOther$15,001 - $50,0002021-02-12
- DRep. Tom MalinowskiPurchase$15,001 - $50,0002021-02-17
- RRep. Greg GianfortePurchase$100,001 - $250,0002018-11-30
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does BL have?
BLACKLINE, INC. (BL) has 65 SEC Form 4 filings (128 transaction rows) in the rolling 365-day window, disclosed by 5 distinct insiders. Most recent filing: Sep 4, 2026.
When was the most recent SEC Form 4 filing for BL?
The most recent Form 4 filing for BL on Tracefour is dated Sep 4, 2026.
Who is the most active insider at BL?
The most active SEC Form 4 filer at BL in the rolling window is Director Unterman Thomas, with 7 filings.
What is the net insider flow at BL over the last 6 months?
Over the trailing 180 days, insiders at BL have net sold $2.4M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at BL in the current window?
Inside the rolling window, insiders at BL bought $0 and sold $2.9M based on SEC Form 4 filings.
Can I get alerts for BL insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at BLACKLINE, INC. (BL). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
BLACKLINE, INC. is in the Technology sector.