Sienna Resources Inc. — Investor Relations & Filings
Sienna Resources Inc. is an exploration-stage company focused on acquiring and developing high-grade mineral deposits in politically stable and environmentally responsible jurisdictions. The company's portfolio emphasizes energy metals critical for rechargeable batteries, including uranium, lithium, cesium, and spodumene. Key assets include several uranium projects in the Athabasca Basin, Saskatchewan, situated adjacent to properties held by major industry operators. Sienna also holds lithium brine projects in Nevada and the Case Lake West Cesium and Spodumene Pegmatite Project, alongside the Stonesthrow Gold Project.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| Report of exempt distribution (45-106F1).pdf | 2026-05-07 | English | |
| Material change report - English.pdf | 2026-04-10 | English | |
| Material change report - English.pdf | 2026-04-10 | English | |
| News release - English.pdf | 2026-03-25 | English | |
| 52-109FV1 - Certification of annual filings - CFO (E).pdf | 2026-03-23 | English | |
| AB form 13-501F1 (class 1 and 3B reporting issuers - participation fee).PDF | 2026-03-23 | English |
Browse filings by year
7 yearsMarket data
Market data not available
Price history
Peer group · Mining of uranium and thorium ores
| Company | Ticker | Country | Sector |
|---|---|---|---|
|
Abasca Resources Inc.
Mineral exploration focused on clean and sustainable resour…
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ABA | CA | Mining and quarrying |
|
Aero Energy Limited
Junior company focused on high-grade uranium exploration an…
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AERO | CA | Mining and quarrying |
|
Alliance Mining Corp.
Acquires, explores, and develops mineral properties, specia…
|
ALM | CA | Mining and quarrying |
|
ALLIGATOR ENERGY LIMITED
Explores and develops uranium and energy mineral assets for…
|
AGE | AU | Mining and quarrying |
|
Alpha Minerals Inc.
Junior explorer specializing in uranium and gold deposits i…
|
AMW | CA | Mining and quarrying |
|
American Atomics Incorporated
Developing an integrated domestic nuclear fuel cycle, from …
|
NUKE | CA | Mining and quarrying |
|
AMERICAN URANIUM LTD
Mineral exploration company identifying and developing high…
|
AMU | AU | Mining and quarrying |
|
ANFIELD ENERGY INC
Operates one of three licensed US conventional uranium mill…
|
AEC | CA | Mining and quarrying |
|
ANFIELD ENERGY INC.
Uranium and vanadium developer with a licensed U.S. mill fo…
|
AEC | US | Mining and quarrying |
|
Anthem Resources Incorporated
Exploration and development of mineral properties, primaril…
|
AYN | CA | Mining and quarrying |
Sienna Resources Inc. via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/43792/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=43792 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=43792 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
cURL
$ curl https://api.financialreports.eu/api/filings/?company=43792 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 43792}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for Sienna Resources Inc. (id: 43792)"
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