Filer Snapshot

Wei-Wu He

CIK 0001542073. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity type

Individual

Total filings

11

Latest filing

18 May 2026

Industry

n/a

Filing-backed research brief

Start with the SEC data that changes for this CIK

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

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Largest parsed holding

—

Populates from the latest parsed 13F information table.

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13D/G large stake

CASIF

18 May 2026 · 59% ownership

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Source: SEC Schedule 13D/G

SCHEDULE 13D/A filed on 18 May 2026 for CIK 0001542073.

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Ownership signals CIK-linked ownership evidence from parsed SEC filings. 1 signal
Parsed SEC ownership signals

Parsed SEC ownership coverage

These bars compare filing-backed value available in each disclosure family. Read them as separate lenses, not as one combined ownership total.

Forms 3/4/5 positions$611.6K

Reporting-owner positions with enough filing detail to estimate value.

Forms 3/4/5 position value

3/4/5
$611.6K

Estimated from parsed Forms 3/4/5 when filings include enough share and price data.

Largest linked holdings

Largest issuer positions linked to this CIK across parsed 13F, 13D/G, and Forms 3/4/5 records.

CASIF

Largest active 13D stakes

Active large-stake positions disclosed in parsed Schedule 13D filings.

CASI CASIF
How to read these SEC ownership signals
  • Read each filing family separately: 13F portfolios, 13D/G large stakes, and Forms 3/4/5 owner positions answer different SEC disclosure questions.
  • Open the linked research path when you need the filing, CIK, issuer, or CUSIP trail behind a value.
At a glance Names, identifiers, and filing context for this profile. 1 identity field
Business address
Entremed, Inc., 9640 Medical Center Drive, Rockville, MD, 20850

Filer intelligence

What SEC filings say about Wei-Wu He

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

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Quick read

  • 1 recent 13D/G stake row found; top row is CASIF at 59% ownership.
  • Forms 3/4/5 show insider context for CASIF worth $611.6K.

SEC source mix

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

XML parsed
13F portfolio No rows yet

Quarterly institutional portfolio holdings.

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13D/G stakes 1 rows

Beneficial ownership and large-stake disclosures.

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Forms 3/4/5 2 rows

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

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13D/G large-stake context

CASIF

18 May 2026 · Ordinary Shares

59%
Issuer page 13D/G history

Forms 3/4/5 insider context

CASIF

18 Mar 2026 · 10% owner

$611.6K
Issuer page Owner page

CASI

13 Jun 2022 · Chairman and CEO · 10% owner

Issuer page Owner page

Latest update

What changed recently for Wei-Wu He

New filing available

Latest Schedule 13D/G period: 18 May 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

18 May 2026

Page type

Filer profile

Latest period

18 May 2026

Schedule 13D/G context is visible from filings filed on 18 May 2026.

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SEC filing record

CIK 0001542073 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
11
First seen
16 Jun 2021
Latest filing
18 May 2026
Entity
Individual

Observed form types

4 SCHEDULE 13D/A

CIK-linked evidence first

Wei-Wu He SEC filings Wei-Wu He 13D/G history Wei-Wu He owner filings Open SEC filing index

Latest Filings

Showing the latest 11 of 11 SEC filings for Wei-Wu He.

SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
18 May 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
23 Mar 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
10 Feb 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
29 Jan 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
09 Jan 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
18 Dec 2025
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
20 Jun 2025
Reporting date
Not listed
SEC evidence
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4

4 filing

Filing date
17 Jun 2022
Reporting date
13 Jun 2022
SEC evidence
Open document Open filing
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4

4 filing

Filing date
19 Nov 2021
Reporting date
17 Nov 2021
SEC evidence
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4

4 filing

Filing date
20 Aug 2021
Reporting date
18 Aug 2021
SEC evidence
Open document Open filing
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4

4 filing

Filing date
16 Jun 2021
Reporting date
15 Jun 2021
SEC evidence
Open document Open filing
Next action
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