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SEC reporting owner

Chen Stephen C. SEC insider disclosures

Explore Chen Stephen C.'s reporting-owner identity, issuer relationships, purchases, sales and SEC filing receipts.

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

Reporting owner CIK
0001869758
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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2026-09-152026-09-14DUOLS5,965Not reported

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

The displayed observation date is 2026-09-14 and its public availability date is 2026-09-15. Subtracting those calendar dates gives 1 day 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 0001628280-26-062115 ↗SEC accession 0001628280-26-062115 ↗SEC accession 0001628280-26-058019 ↗

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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Duolingo, Inc.0001562088DUOLYesNo
Duolingo, Inc. ↗

Recent SEC transactions

Inspect all 34 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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2026-09-152026-09-14DUOLS5,965Not reported
2026-09-152026-09-14DUOLS2,107Not reported
2026-08-202026-08-17DUOLS1,024Not reported
2026-05-202026-05-18DUOLS700Not reported
2026-05-202026-05-18DUOLS1,277Not reported
2026-05-202026-05-15DUOLS820Not reported
2026-05-202026-05-15DUOLA24,411Not reported
2026-02-212026-02-18DUOLS80Not reported
2026-02-212026-02-18DUOLS520Not reported
2026-02-212026-02-18DUOLS480Not reported
2026-02-212026-02-18DUOLS821Not reported
2026-02-212026-02-17DUOLS896Not reported
2025-11-202025-11-18DUOLS480Not reported
2025-11-202025-11-18DUOLS320Not reported
2025-11-202025-11-18DUOLS594Not reported
2025-11-202025-11-18DUOLS120Not reported
2025-11-202025-11-17DUOLS1,282Not reported
2025-08-292025-08-26DUOLS1,515Not reported
2025-08-192025-08-15DUOLS1,282Not reported
2025-05-202025-05-16DUOLS200Not reported
2025-05-202025-05-16DUOLS100Not reported
2025-05-202025-05-16DUOLS467Not reported
2025-05-202025-05-16DUOLS300Not reported
2025-05-202025-05-16DUOLS300Not reported
2025-05-202025-05-16DUOLS1,268Not reported
2025-05-172025-05-15DUOLS1,257Not reported
2025-05-172025-05-15DUOLA5,443Not reported
2025-02-202025-02-18DUOLS898Not reported
2025-02-202025-02-18DUOLS1,166Not reported
2024-11-212024-11-18DUOLS200Not reported
2024-11-212024-11-18DUOLS400Not reported
2024-11-212024-11-18DUOLS1,767Not reported
2024-11-212024-11-18DUOLS275Not reported
2024-11-192024-11-15DUOLS1,249Not 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.