Form
SCHEDULE 13D
Active or control-oriented beneficial ownership filing.
Fusion Summer Ltd - 18 Sep 2025 SCHEDULE 13D Report for Helius Medical Technologies, Inc. Class A Common Stock, $0.001 par value per share (HSDT)
- Filing manager
- Fusion Summer Ltd
- Reporting owner
- Fusion Summer Limited
- Beneficially owned shares
- 6,830,402 shares
- Large-stake signal
-
Ownership
17%Beneficial ownership of this reported class.
Shares
6,830,402 sharesShares beneficially owned as disclosed.
Event date
18 Sep 2025Date tied to the ownership event or amendment.
Accepted by SEC
02 Oct 2025EDGAR acceptance date.
How to read this large-stake filing
- Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
- Compare this filing with the holder history and issuer page before treating the percentage as a current position.
- Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
- Class ownership
- 17%
- Symbol
- HSDT
- Shares outstanding
- 40,178,835 shares
- SEC form
- SCHEDULE 13D
- Accepted by SEC
- 02 Oct 2025, 11:02:49 UTC
- Event date
- 18 Sep 2025
- Next SEC filing
- 13 May 2026
- Source filing
- View source filing
Ownership signal
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Subject security
Names, identifiers, and filing context for this profile.
2 source fields
Source evidence
Original filing metadata and source links for verification.
5 source fields
Key filing fact
Fusion Summer Ltd disclosed 17% ownership in Helius Medical Technologies, Inc. Class A Common Stock, $0.001 par value per share (HSDT) on 18 Sep 2025.
Key facts
- Fusion Summer Ltd filed SCHEDULE 13D for Helius Medical Technologies, Inc. Class A Common Stock, $0.001 par value per share (HSDT).
- Disclosed ownership: 17%.
- Date of event: 18 Sep 2025.
Change
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 02 Oct 2025, 11:02.
Research use
- This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
- Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.
Evidence
Backed by Schedule 13D/13G
View source filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Disclosed reporting parties (2)
Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares owned | Sole voting power | Shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Fusion Summer Limited | 17% | 6,830,402 | 0 | 6,830,402 | /s/ CHEE Choon Wee | CHEE Choon Wee, Director | 0002087954 |
| CHEE Choon Wee | 17% | 6,830,402 | 0 | 6,830,402 | /s/ CHEE Choon Wee | CHEE Choon Wee, Individually | 0002086036 |
CIK / CUSIP context first