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SEC Form 4 research

BLACKLINE, INC. insider transactions

Inspect BLACKLINE, INC.'s public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001666134
Reporting owners
47
Officers and directors
22
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-08-292026-08-27Stalick Michelle DS780$33.65Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-08-27 and its public availability date is 2026-08-29. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC accession 0001666134-26-000102 ↗SEC accession 0001666134-26-000100 ↗

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 2 rows, 7 columns

Scroll sideways to compare all columns. Select a heading to sort.

2026-08-292026-08-27Stalick Michelle DS780$33.65Not reported
2026-08-272026-08-24Tucker ThereseS70,000$31.96Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 25 displayed rows: Officers and directors in the directory

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SMITH GRAHAM0001219883376
Huffman Marc000160395181
Ryan Owen00017489065
Yamamoto Mika000177143340
HIRSCH PETER000164676546
HUGHES GREGORY000128100251
Morgan-Prager Karole0001183627124
Duan Jimmy C000144725268
Silver Lake Group, L.L.C.00014182263,356
Griffith William J.G.0001688124262
HENSHALL DAVID J0001176008107
Murphy Chris000168812010
Partin Mark000168836696
Silver Lake Sumeru Fund LP000141037712
Silver Lake Technology Associates Sumeru, L.P.000146352112
Silver Lake Technology Investors Sumeru, L.P.000146352012
SLTA Sumeru (GP), L.L.C.000146352712
Spanicciati Mario000168812875
Stalick Michelle D000160330012
THOMPSON KEVIN B000118059858
Tucker Therese0001688365111
Unterman Thomas000129945533
Villanova Patrick00016881199
Whye Barbara00018548391
Woodhams Mark000183815824
SMITH GRAHAM ↗Huffman Marc ↗Ryan Owen ↗Yamamoto Mika ↗HIRSCH PETER ↗HUGHES GREGORY ↗Morgan-Prager Karole ↗Duan Jimmy C ↗Silver Lake Group, L.L.C. ↗Griffith William J.G. ↗HENSHALL DAVID J ↗Murphy Chris ↗Partin Mark ↗Silver Lake Sumeru Fund LP ↗Silver Lake Technology Associates Sumeru, L.P. ↗Silver Lake Technology Investors Sumeru, L.P. ↗SLTA Sumeru (GP), L.L.C. ↗Spanicciati Mario ↗Stalick Michelle D ↗THOMPSON KEVIN B ↗Tucker Therese ↗Unterman Thomas ↗Villanova Patrick ↗Whye Barbara ↗Woodhams Mark ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.