Filer Snapshot

Quan Zhou

CIK 0001491503. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity type

Individual

Total filings

2

Latest filing

26 May 2022

Industry

n/a

Filing-backed research brief

Start with the SEC data that changes for this CIK

Latest signal: 13D/G stake for CASI. Each card links back to the PortfolioSavvy page where the filing evidence is closest.

Open 13D/G history Save page

Largest parsed holding

—

Populates from the latest parsed 13F information table.

Open holding

13D/G large stake

CASI

30 Sep 2025 · 4.8% ownership

Open 13D/G
Source: SEC Forms 3/4/5

4 filed on 26 May 2022 for CIK 0001491503.

View source filing
Business address
C/O Idg Vc Management Ltd., Unit 1509, The Center, 99 Queen's Rd, Central, Hong Kong, -

Filer intelligence

What SEC filings say about Quan Zhou

A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.

Save filer

Quick read

  • 1 recent 13D/G stake row found; top row is CASI at 4.8% ownership.
  • Forms 3/4/5 show insider context for CASI.

SEC source mix

Counts show available parsed rows, not one combined ownership total.

XML parsed
13F portfolio No rows yet

Quarterly institutional portfolio holdings.

Open
13D/G stakes 1 rows

Beneficial ownership and large-stake disclosures.

Open
Forms 3/4/5 1 rows

Officer, director, and 10% owner holdings or transactions.

Open

13D/G large-stake context

CASI

30 Sep 2025 · Ordinary Shares, par value US$0.0001 per share

4.8%
Issuer page 13D/G history

Forms 3/4/5 insider context

CASI

25 May 2022

Issuer page Owner page

Latest update

What changed recently for Quan Zhou

Ownership report updated

Latest ownership report period: 25 May 2022. Open the source-backed page to inspect the fresh filing or facts context.

Update date

26 May 2022

Page type

Ownership filings

Latest period

25 May 2022

Ownership context was refreshed from SEC Forms 3/4/5 filed on 26 May 2022.

Open ownership filings Browse recent public updates

SEC filing record

CIK 0001491503 filing coverage

Start with this filing record, then use the linked ownership pages when parsed 13F, 13D/G, Forms 3/4/5, or facts data exists for this CIK.

SEC filings
2
First seen
16 Jun 2021
Latest filing
26 May 2022
Entity
Individual

Observed form types

4

CIK-linked evidence first

Quan Zhou SEC filings Quan Zhou 13D/G history Quan Zhou owner filings Open SEC filing index

Latest Filings

Showing the latest 2 of 2 SEC filings for Quan Zhou.

4

4 filing

Filing date
26 May 2022
Reporting date
25 May 2022
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
16 Jun 2021
Reporting date
15 Jun 2021
SEC evidence
Open document Open filing
Next action
Verify source filing
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .