Entity type
Individual
Filer Snapshot
Casi DeYoung
CIK 0001652066. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.
Total filings
4
Latest filing
27 Jan 2026
Industry
n/a
Filing-backed research brief
Start with the SEC data that changes for this CIK
Latest signal: Forms 3/4/5 owner position for STTK. Each card links back to the PortfolioSavvy page where the filing evidence is closest.
Latest 13F portfolio
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No parsed 13F portfolio row yet.
Browse latest 13FLargest parsed holding
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Populates from the latest parsed 13F information table.
Open holding13D/G large stake
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No recent parsed 13D/G stake row for this CIK.
Browse 13D/GInsider / owner context
STTK
25 Jan 2026 · $304.9K
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Source: SEC Forms 3/4/5
View Source Filing
4 filed on 27 Jan 2026 for CIK 0001652066.
- SEC ownership summary
-
Parsed filing values
Bars compare filing families separately; they should not be added together as one total.
Forms 3/4/5 positions$304.9KReporting-owner positions when a value can be estimated.
Forms 3/4/5 position value
$304.9K
Estimated from parsed Forms 3/4/5 when the filing discloses enough data.
Top issuer positions
Largest parsed issuer positions across ownership filing types.
STTKHow to read filing-family values
- Filing families stay separate: 13F portfolio value, 13D/G large stakes, and Forms 3/4/5 owner positions should not be blended into one total.
- Use the linked research paths to verify each signal against the original SEC filing.
- Business address
- C/O Mirna Therapeutics, Inc., 2150 Woodward St., Suite 100, Austin, TX, 78744
SEC ownership signals
1 fact
Filer identity
1 fact
Filer intelligence
What SEC filings say about Casi DeYoung
A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.
Quick read
- Forms 3/4/5 show insider context for STTK worth $304.9K.
SEC source mix
Counts show available parsed rows, not one combined ownership total.
Forms 3/4/5 insider context
STTK
25 Jan 2026 · Chief Business Officer
Latest update
What changed recently for Casi DeYoung
Latest ownership report period: 25 Jan 2026. Open the source-backed page to inspect the fresh filing or facts context.
Update date
27 Jan 2026
Page type
Ownership filings
Latest period
25 Jan 2026
Ownership context was refreshed from SEC Forms 3/4/5 filed on 27 Jan 2026.
SEC filing record
CIK 0001652066 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
4
First seen
12 Jan 2022
Latest filing
27 Jan 2026
Entity
Individual
Observed form types
4
Primary evidence
Latest Filings
Showing the latest 4 of 4 SEC filings for Casi DeYoung.
4
4 filing
- Filing date
- 27 Jan 2026
- Reporting date
- 25 Jan 2026
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
4 filing
- Filing date
- 27 Jan 2023
- Reporting date
- 25 Jan 2023
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
4 filing
- Filing date
- 12 Jan 2023
- Reporting date
- 10 Jan 2023
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
4
4 filing
- Filing date
- 12 Jan 2022
- Reporting date
- 10 Jan 2022
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing