國光生 (4142)
國光生 is a TWSE-listed company in Biotech & Medical Care. Revenue for September 2026 was NT$309.54M, up 90.1% from a year earlier. EPS over the last four quarters totals -NT$0.34.
Company profile
Data as of 2026-10-18
- Market
- TWSE-listed
- Industry
- Biotech & Medical Care
- Listed
- 2012-05-03
- Founded
- 1965-12-22
- Paid-in capital
- NT$4.30B
- Common shares issued
- 429,507,750
- Legal name
- 國光生物科技股份有限公司
- Website
- http://www.adimmune.com.tw/
Monthly revenue
Data as of 2026-10-17
| Month | Revenue | MoM | YoY |
|---|---|---|---|
| 2026-09 | NT$309.54M | +216.1% | +90.1% |
| 2026-08 | NT$97.92M | -68.2% | +34.5% |
Year to date: +31.8% vs. last year (Jan–Sep 2026)
Earnings per share (EPS)
Data as of 2026-06-30
| Quarter | EPS (NT$) |
|---|---|
| 2026 Q2 | -0.38 |
| 2026 Q1 | -0.44 |
| 2025 Q4 | 0.52 |
| 2025 Q3 | -0.04 |
| 2025 Q2 | -0.52 |
| 2025 Q1 | -0.53 |
| 2024 Q4 | -0.12 |
| 2024 Q3 | 0.63 |
Last four quarters: -NT$0.34
Dividends
Data as of 2026-10-18
| Period | Cash (NT$) | Stock (NT$) | Ex-dividend | Ex-rights | Paid |
|---|---|---|---|---|---|
| 2025 年度 | 0.00 | 0.00 | — | — | — |
Shareholder structure
Data as of 2026-10-16
| Holding range | Holders | Share of total |
|---|---|---|
| 1–999 shares | 47,837 | 0.1% |
| 1,000–5,000 shares | 27,952 | 13.4% |
| 5,001–10,000 shares | 4,223 | 7.9% |
| 10,001–15,000 shares | 1,261 | 3.8% |
| 15,001–20,000 shares | 874 | 3.8% |
| 20,001–30,000 shares | 738 | 4.5% |
| 30,001–40,000 shares | 389 | 3.3% |
| 40,001–50,000 shares | 231 | 2.5% |
| 50,001–100,000 shares | 400 | 6.7% |
| 100,001–200,000 shares | 186 | 6.3% |
| 200,001–400,000 shares | 96 | 6.3% |
| 400,001–600,000 shares | 33 | 3.9% |
| 600,001–800,000 shares | 14 | 2.3% |
| 800,001–1,000,000 shares | 6 | 1.3% |
| 1,000,001+ shares | 37 | 33.7% |
TDCC data for 2026-10-16: 37 holders own more than 1,000 lots (33.7% of shares), and 47,837 hold less than one lot (0.1%).
Institutional net buying (last 20 trading days)
Data as of 2026-10-19
| Date | Foreign | Trust | Dealers | Total |
|---|---|---|---|---|
| 2026-10-19 | -743 | 0 | -8 | -751 |
| 2026-10-16 | 134 | 0 | 0 | 134 |
| 2026-10-15 | 547 | 0 | 0 | 547 |
| 2026-10-14 | -28 | 0 | 0 | -28 |
| 2026-10-13 | -111 | 0 | -6 | -117 |
| 2026-10-12 | -470 | 0 | -1 | -471 |
| 2026-10-08 | 257 | 0 | 0 | 257 |
| 2026-10-07 | 994 | 0 | -1 | 993 |
| 2026-10-06 | 727 | 0 | 0 | 727 |
| 2026-10-05 | 43 | 0 | 0 | 43 |
| 2026-10-02 | -43 | 0 | 1 | -42 |
| 2026-10-01 | -82 | 0 | 0 | -82 |
| 2026-09-30 | 903 | 0 | 4 | 907 |
| 2026-09-29 | 450 | 0 | 1 | 451 |
| 2026-09-24 | 155 | 0 | 1 | 156 |
| 2026-09-23 | 150 | 0 | 0 | 150 |
| 2026-09-22 | 282 | 0 | 1 | 283 |
| 2026-09-21 | 84 | 0 | 4 | 88 |
| 2026-09-18 | 102 | 0 | 26 | 128 |
| 2026-09-17 | 605 | 0 | 3 | 608 |
Unit: lots (1,000 shares). Over the last 20 trading days, institutions were net buyers of 3,981 lots.
Price (official close)
Data as of 2026-10-19
Last close NT$17.80 (2026-10-19); 52-week range NT$16.40–22.50.
Sources
- Source: Taiwan Stock Exchange and Taipei Exchange public data
- Source: Taiwan Stock Exchange and Taipei Exchange public data
- Source: Market Observation Post System (MOPS)
- Source: Taiwan Stock Exchange and Taipei Exchange public data
- Source: Taiwan Depository & Clearing Corporation public data
- Source: Taiwan Stock Exchange and Taipei Exchange public data
- Source: Taiwan Stock Exchange and Taipei Exchange public data
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