# J-Star Co., Ltd.

> J-Star Co., Ltd. is an exempt reporting adviser in Chiyoda, Tokyo, Japan, filing reports since 2017. Exempt reporting advisers do not report regulatory assets under management on Form ADV.

- CRD: 287541
- Filed as: J-STAR CO., LTD.
- Also doing business as: J-STAR JERSEY COMPANY LIMITED
- Reporting status: Exempt reporting adviser (status as filed: ERA - Active)
- Location: Chiyoda, Tokyo, Japan
- Filing period: October 2026
- Form ADV filing dated: December 24, 2025
- Public record (IAPD): https://adviserinfo.sec.gov/firm/summary/287541
- AdvisorCensus page: https://advisorcensus.com/firm/j-star-co-ltd-chiyoda-tokyo-287541

## Quick answers

**Where is J-Star Co., Ltd. located?**
J-Star Co., Ltd.'s principal office is in Chiyoda, Tokyo, Japan, according to its Form ADV.

**How does J-Star Co., Ltd. report to regulators?**
J-Star Co., Ltd. is an exempt reporting adviser, filing reports since 2017. Exempt reporting advisers file a shorter Form ADV. Status as filed: ERA - Active. CRD 287541.

**Does J-Star Co., Ltd. report any disciplinary disclosures?**
Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's public record on IAPD: https://adviserinfo.sec.gov/firm/summary/287541

## From the Form ADV filing

### Firm details
- Reporting since: 2017 (9 years)
- Employees: Not reported total, Not reported performing advisory functions
- Wrap fee program participation: Not reported
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Websites listed on Form ADV (Item 1.I)
- j-star.co.jp/EN

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | Not reported | Not reported | March 30, 2021 |
| October 2022 | Not reported | Not reported | June 29, 2022 |
| October 2023 | Not reported | Not reported | December 22, 2022 |
| October 2024 | Not reported | Not reported | January 8, 2024 |
| October 2025 | Not reported | Not reported | December 25, 2024 |
| October 2026 | Not reported | Not reported | December 24, 2025 |


## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. J-Star Co., Ltd. (CRD 287541): Form ADV filing data as of October 2026.