BL SEC Filing News — BlackLine, Inc.

Latest SEC filings for BlackLine, Inc. (BL) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-09-04.

BlackLine, Inc. provides cloud-based solutions to automate and streamline accounting and finance operations in the United States and internationally. It offers financial close and consolidation solutions, such as account reconciliations that provides a centralized workspace for users to collaborate on account reconciliations; transaction matching, which analyzes and reconciles individual transactions; task management to create and manage processes and task lists; and financial reporting analytic…
Sector: Technology Industry: Software - Application Market Cap: $1.8B
20
Total Filings
0
Bullish Classifications
5
Bearish Classifications
14
Insider Transactions
3
Material Events (8-K)
1
Periodic Reports
Rule-based classifications for BL currently lean bearish. Of the 20 filing records displayed, 5 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 0 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.
BL Filing Activity Snapshot 2026-05-21 — 2026-09-04
Insider Transactions (Form 4)
0 buys vs 5 sells
Net insider selling in this period — insiders sell for many reasons beyond conviction.
Largest Form 144 Filing
$2.24M
Tucker Therese (Director) · 2026-08-26
70,000 shares · Form 4
Form 144 Notices
2
Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.
Insider Transactions 14 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 14 filings in this group are Form 4s for BlackLine, Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 14 insider filings shown, the breakdown is 8 tax withholding, 5 open-market sale and 1 option exercise. 5 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Tax withholding ×8
Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.
Open-market sale ×5
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Option exercise ×1
The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.
Form 4 Option exercise Tax / Compensation Filing 2026-09-04

BL insider Form 4 filed for equity award, exercise, or tax withholding

Villanova Patrick (Chief Financial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 750 $14.00 $10.5K
M Option exercise derivative · Stock Option (Right to Buy) 750 — —
Filing: Form 4 (Insider Transaction) Insider: Villanova Patrick (Chief Financial Officer) Shares: 750
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-08-28

BL insider Stalick Michelle D (Chief Accounting Officer) sold 780 shares (~$26.2K)

Stalick Michelle D, listed as Chief Accounting Officer at BLACKLINE, INC., reported an open-market sale of 780 BL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 780 $33.65 $26.2K
Filing: Form 4 (Insider Transaction) Insider: Stalick Michelle D (Chief Accounting Officer) Shares: 780 Est. Value: $26.2K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-08-26

BL insider Tucker Therese (Director) sold 70,000 shares (~$2.24M)

Tucker Therese, listed as Director at BLACKLINE, INC., reported an open-market sale of 70,000 BL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 70,000 $14.00 $980.0K
M Option exercise 26,560 $14.00 $371.8K
S Open-market sale 70,000 $31.96 $2.24M
M Option exercise derivative · Stock Option (Right to Buy) 70,000 — —
M Option exercise derivative · Stock Option (Right to Buy) 26,560 — —
Filing: Form 4 (Insider Transaction) Insider: Tucker Therese (Director) Shares: 70,000 Est. Value: $2.24M
View on SEC EDGAR → Open Filing Document →
Form 4 Tax withholding Tax / Compensation Filing 2026-08-24

BL insider Form 4 filed for equity award, exercise, or tax withholding

Duan Jimmy C (Chief Customer Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code Nature Shares Price Value
F Tax withholding on vested shares 1,190 $31.92 $38.0K
F Tax withholding on vested shares 751 $31.92 $24.0K
Filing: Form 4 (Insider Transaction) Insider: Duan Jimmy C (Chief Customer Officer) Shares: 1,941
View on SEC EDGAR → Open Filing Document →
Form 4 Tax withholding Tax / Compensation Filing 2026-08-24

BL insider Form 4 filed for equity award, exercise, or tax withholding

Villanova Patrick (Chief Financial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code Nature Shares Price Value
F Tax withholding on vested shares 260 $31.92 $8.3K
F Tax withholding on vested shares 300 $31.92 $9.6K
F Tax withholding on vested shares 1,200 $31.92 $38.3K
Filing: Form 4 (Insider Transaction) Insider: Villanova Patrick (Chief Financial Officer) Shares: 1,760
View on SEC EDGAR → Open Filing Document →
Form 4 Tax withholding Tax / Compensation Filing 2026-08-24

BL insider Form 4 filed for equity award, exercise, or tax withholding

Van Houten Stuart (Chief Commercial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code Nature Shares Price Value
F Tax withholding on vested shares 1,720 $31.92 $54.9K
Filing: Form 4 (Insider Transaction) Insider: Van Houten Stuart (Chief Commercial Officer) Shares: 1,720
View on SEC EDGAR → Open Filing Document →
Form 4 Tax withholding Tax / Compensation Filing 2026-08-24

BL insider Form 4 filed for equity award, exercise, or tax withholding

Ung Jeremy (Chief Technology Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code Nature Shares Price Value
F Tax withholding on vested shares 1,388 $31.92 $44.3K
F Tax withholding on vested shares 876 $31.92 $28.0K
Filing: Form 4 (Insider Transaction) Insider: Ung Jeremy (Chief Technology Officer) Shares: 2,264
View on SEC EDGAR → Open Filing Document →
Form 4 Tax withholding Tax / Compensation Filing 2026-08-24

BL insider Form 4 filed for equity award, exercise, or tax withholding

Stalick Michelle D (Chief Accounting Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code Nature Shares Price Value
F Tax withholding on vested shares 143 $31.92 $4.6K
F Tax withholding on vested shares 161 $31.92 $5.1K
F Tax withholding on vested shares 265 $31.92 $8.5K
F Tax withholding on vested shares 302 $31.92 $9.6K
Filing: Form 4 (Insider Transaction) Insider: Stalick Michelle D (Chief Accounting Officer) Shares: 871
View on SEC EDGAR → Open Filing Document →
Form 4 Tax withholding Tax / Compensation Filing 2026-08-24

BL insider Form 4 filed for equity award, exercise, or tax withholding

Ryan Owen (Director, Chief Executive Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code Nature Shares Price Value
F Tax withholding on vested shares 2,235 $31.92 $71.3K
F Tax withholding on vested shares 2,027 $31.92 $64.7K
F Tax withholding on vested shares 2,438 $31.92 $77.8K
Filing: Form 4 (Insider Transaction) Insider: Ryan Owen (Director, Chief Executive Officer) Shares: 6,700
View on SEC EDGAR → Open Filing Document →
Form 4 Tax withholding Tax / Compensation Filing 2026-08-24

BL insider Form 4 filed for equity award, exercise, or tax withholding

Morgan-Prager Karole (Chief Legal and Administrative) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code Nature Shares Price Value
F Tax withholding on vested shares 778 $31.92 $24.8K
F Tax withholding on vested shares 884 $31.92 $28.2K
F Tax withholding on vested shares 1,063 $31.92 $33.9K
Filing: Form 4 (Insider Transaction) Insider: Morgan-Prager Karole (Chief Legal and Administrative) Shares: 2,725
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-06-08

BL insider Yamamoto Mika (Director) sold 3,000 shares (~$85.4K)

Yamamoto Mika, listed as Director at BLACKLINE, INC., reported an open-market sale of 3,000 BL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 3,000 $28.48 $85.4K
Filing: Form 4 (Insider Transaction) Insider: Yamamoto Mika (Director) Shares: 3,000 Est. Value: $85.4K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-06-02

BL insider Stalick Michelle D (Chief Accounting Officer) sold 780 shares (~$24.1K)

Stalick Michelle D, listed as Chief Accounting Officer at BLACKLINE, INC., reported an open-market sale of 780 BL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 780 $30.93 $24.1K
Filing: Form 4 (Insider Transaction) Insider: Stalick Michelle D (Chief Accounting Officer) Shares: 780 Est. Value: $24.1K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-05-22

BL insider HUGHES GREGORY (Director) sold 1,637 shares (~$49.5K)

HUGHES GREGORY, listed as Director at BLACKLINE, INC., reported an open-market sale of 1,637 BL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 1,637 $30.25 $49.5K
Filing: Form 4 (Insider Transaction) Insider: HUGHES GREGORY (Director) Shares: 1,637 Est. Value: $49.5K
View on SEC EDGAR → Open Filing Document →
Form 4 Tax withholding Tax / Compensation Filing 2026-05-21

BL insider Form 4 filed for equity award, exercise, or tax withholding

Duan Jimmy C (Chief Customer Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code Nature Shares Price Value
F Tax withholding on vested shares 1,190 $30.84 $36.7K
F Tax withholding on vested shares 751 $30.84 $23.2K
Filing: Form 4 (Insider Transaction) Insider: Duan Jimmy C (Chief Customer Officer) Shares: 1,941
View on SEC EDGAR → Open Filing Document →
Proposed Insider Sales 2 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. BlackLine, Inc. has 2 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-08-24

BL Form 144 filed for proposed insider sale by Tucker Therese (70,000 shares) ~$2.24M

Tucker Therese filed a Form 144 with the SEC indicating intent to sell BL (BLACKLINE, INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Tucker Therese Shares: 70,000 Est. Value: $2.24M
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-06-05

BL Form 144 filed for proposed insider sale by Yamamoto Mika (3,000 shares) ~$85.4K

Yamamoto Mika filed a Form 144 with the SEC indicating intent to sell BL (BLACKLINE, INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Yamamoto Mika Shares: 3,000 Est. Value: $85.4K
View on SEC EDGAR → Open Filing Document →
Material Events 3 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 3 in this period for BlackLine, Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-08-04

BL filed 8-K — material company event

BLACKLINE, INC. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Form 8-K Material Company Update 2026-08-04

BL filed 8-K — material company event

BLACKLINE, INC. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Form 8-K Material Company Update 2026-08-03

BL filed 8-K — material company event

BLACKLINE, INC. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Periodic Reports 1 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 1 quarterly report (10-Q) for BlackLine, Inc.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-08-05

BL filed Quarterly Report (10-Q)

BLACKLINE, INC. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)
View on SEC EDGAR → Open Filing Document →

How we classify BlackLine, Inc.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on BL. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — BL SEC Filings

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Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.
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