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SEC reporting owner

Tsao David SEC insider disclosures

Explore Tsao David's reporting-owner identity, issuer relationships, purchases, sales and SEC filing receipts.

As of 2026-10-14T07:26:40.310Z

Reporting owner CIK
0002087127
Issuers
1
Coverage
verified
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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, 6 columns

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2026-10-072026-10-05BLLNS400Not reported

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

The displayed observation date is 2026-10-05 and its public availability date is 2026-10-07. 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 0002087127-26-000015 ↗SEC accession 0002087127-26-000015 ↗SEC accession 0002087127-26-000015 ↗

Issuer relationships

A reporting-owner CIK identifies the filer across issuer relationships and name aliases. A filer may be an individual or an organization; the filing role is the relevant evidence.

Show the table · 1 row, 5 columns

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BillionToOne, Inc.0002070849BLLNYesYes
BillionToOne, Inc. ↗

Recent SEC transactions

Inspect all 38 displayed rows: Recent SEC transactions

Code P identifies a purchase, S a sale and A an award. Awards and open-market purchases describe different events. Use the public availability date when deciding when a researcher could have known about the transaction.

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2026-10-072026-10-05BLLNS400Not reported
2026-10-072026-10-05BLLNS555Not reported
2026-10-072026-10-05BLLNS20Not reported
2026-10-072026-10-05BLLNS2,921Not reported
2026-10-072026-10-05BLLNS4,284Not reported
2026-10-072026-10-05BLLNS1,909Not reported
2026-10-072026-10-05BLLNS866Not reported
2026-10-072026-10-05BLLNS100Not reported
2026-10-072026-10-05BLLNS1,829Not reported
2026-10-072026-10-05BLLNS4,916Not reported
2026-10-072026-10-05BLLNS2,200Not reported
2026-09-282026-09-24BLLNS3,333Not reported
2026-09-112026-09-09BLLNS10,000Not reported
2026-09-112026-09-09BLLNS10,000Not reported
2026-08-282026-08-25BLLNS10,000Not reported
2026-08-132026-08-10BLLNS10,000Not reported
2026-07-162026-07-13BLLNS1,028Not reported
2026-07-162026-07-13BLLNS3,835Not reported
2026-07-162026-07-13BLLNS1,725Not reported
2026-07-162026-07-13BLLNS2,274Not reported
2026-07-162026-07-13BLLNS1,138Not reported
2026-07-162026-07-13BLLNS821Not reported
2026-07-162026-07-13BLLNS3,185Not reported
2026-07-162026-07-13BLLNS2,415Not reported
2026-07-162026-07-13BLLNS2,477Not reported
2026-07-162026-07-13BLLNS1,102Not reported
2026-06-182026-06-15BLLNS563Not reported
2026-06-182026-06-15BLLNS2,398Not reported
2026-06-182026-06-15BLLNS2,978Not reported
2026-06-182026-06-15BLLNS2,461Not reported
2026-06-182026-06-15BLLNS1,000Not reported
2026-06-182026-06-15BLLNS600Not reported
2026-06-182026-06-15BLLNS230Not reported
2026-06-182026-06-15BLLNS2,889Not reported
2026-06-182026-06-15BLLNS2,816Not reported
2026-06-182026-06-15BLLNS2,361Not reported
2026-06-182026-06-15BLLNS1,704Not reported
2025-11-132025-11-07BLLNP1,000Not reported

Up to 50 transactions from the recent two-year owner window.

Source evidence and strategy eligibility

The transactions below come from filings; a historical tracker separately simulates following eligible events. Joint filers can report the same transaction, and an owner can have filings at multiple companies. Public availability, amendment lineage and verified coverage determine which events a historical tracker may use.

The current directory marks this owner's filing coverage verified.