Skip to main content
Aptamer Sciences Inc logo

Aptamer Sciences Inc — Investor Relations & Filings

Ticker · 291650 ISIN · KR7291650000 KO Manufacturing
Filings indexed 230 across all filing types
Latest filing 2025-09-26 Regulatory Filings
Country KR South Korea
Listing KO 291650

About Aptamer Sciences Inc

https://aptsci.com/en/

Aptamer Sciences Inc. is a clinical-stage biopharmaceutical company specializing in aptamer technology. The company has established a proprietary, integrated platform for the discovery and development of aptamer-based therapeutics and diagnostics. Its primary focus is on oncology, utilizing its Aptamer-Drug Conjugate (ApDC™) platform to create targeted cancer treatments. The lead candidate, AST-201, is an ApDC targeting the GPC3 protein, which is highly expressed in solid tumors such as liver cancer. The company is advancing AST-201 through clinical trials to evaluate its safety and efficacy. The development pipeline also includes other innovative platforms like Aptamer Radioligand Conjugates (ApRC) and Aptamer Immune Stimulator Conjugates (ApIS), aimed at addressing unmet medical needs in hemato-oncology and other areas. Aptamer Sciences leverages its technology to develop novel therapies with the potential for high specificity and efficacy.

Recent filings

Filing Released Lang Actions
단일판매ㆍ공급계약체결
Regulatory Filings
2025-09-26 Korean
[기재정정]주요사항보고서(유상증자결정)
Regulatory Filings
2025-09-25 Korean
[기재정정]주요사항보고서(전환사채권발행결정)
Regulatory Filings
2025-09-25 Korean
[기재정정]주요사항보고서(유상증자결정)
Regulatory Filings
2025-09-25 Korean
주식등의대량보유상황보고서(일반)
Major Shareholding Notification Classification · 1% confidence The document is a '주식등의 대량보유상황보고서' (Report on Large Shareholding), which is a standard regulatory filing in South Korea under the Capital Markets Act. It details the acquisition of 8.33% of Aptamer Science shares by Alticast Corporation. This type of filing is specifically categorized as a 'Major Shareholding Notification' (MRQ) as it tracks changes in significant ownership levels that cross regulatory reporting thresholds.
2025-09-15 Korean
주식등의대량보유상황보고서(일반)
Major Shareholding Notification Classification · 1% confidence The document is a 'Report of Large Shareholding' (주식등의 대량보유상황보고서) filed with the Financial Supervisory Service (FSS) in South Korea. This type of filing is mandatory when a major shareholder's stake changes significantly (crossing thresholds). It details the reporting person (Han Dong-il), the issuer (Aptamer Science), the number of shares held, changes in shareholding, and the purpose of holding (management influence). This falls under the 'Major Shareholding Notification' category.
2025-09-15 Korean

Report missing filing

Can't find a specific document? Let us know and we'll add it within 24 hours.

We will notify you once the filing is added.
Report sent
Thank you. We will check the data and update it shortly.