1. South Korea Stocks

  2. •

    Industrial services

  3. •

    Engineering & construction
Dong-Ah Geological Engineering Co., Ltd

Dong-Ah Geological Engineering Co., Ltd

KKRX:028100
19,040.00
KRW
+40.00
(+0.21%)
1,701.78EPS
9.86P/E
202.78BMarket Cap
Dong-Ah Geological Engineering Co., Ltd
KRX:028100
(Korea Stock Exchange)

Recent

price

19,040.00

P/E

ratio

9.86

div

yld

- -

ROIC.AI

2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
TTM
KRW
27,605.5
22,463.75
25,071.99
29,182.1
27,019.76
26,231.81
28,609.23
30,070.19
31,916.26
33,718.15
27,850.89
25,617.34
19,725.4
25,017.88
29,369.58
36,301.38
39,578.3
Revenue per Share
1,125
605.75
697
186
377
404
1,007
1,514
1,658
1,686
181
412
-1,690
742
850
1,453
1,708.23
Basic EPS, GAAP
227.7
-1,659.36
1,414.65
-996.63
418.33
-876.07
1,149.22
2,117.5
2,672.53
-3,674.16
521.74
650.53
632.67
1,964.12
-128.05
3,701.51
3,965.61
Free Cash Flow per Basic Share
126.27
175
174.98
174.9
174.81
174.85
175.06
200.04
199.96
200.06
200.04
75
359.16
502.32
505.85
508.41
- -
Dividend per Share
10,054.45
11,196.63
11,825.73
11,758.21
12,013.53
12,245.83
13,223.38
13,825.64
15,466.35
17,158.6
16,951.2
18,086.12
15,999.35
16,817.78
17,333.87
18,994.23
18,452.99
Book Value per Share
10,047.98
11,059.45
11,688.63
11,597.08
11,886.22
12,119.42
13,118.68
13,715.36
15,373.39
17,076.98
16,869.27
17,992.97
15,915.7
16,733.14
17,247.15
18,949.99
18,408.31
Tangible Book Value per Share
11
11
11
11
11
11
11
11
11
11
11
11
13
14
13
13
12
Basic Weighted Avg Shares
312,240
253,840
283,353
329,945
305,654
296,677
323,175
339,724
360,734
380,903
314,648
289,482
266,283
344,964
393,493
467,726
494,099
Sales/Revenue/Turnover
4.68
2.15
3.38
1.26
0.97
1.34
3.88
5.99
7.23
6.02
1.03
1.39
-11.48
2.23
2.44
3.86
4.14
Operating Margin (%)
24,207
18,786
16,670
15,141
13,159
12,682
31,149
29,315
29,213
28,178
34,851
18,762
21,546
23,620
19,078
18,970
23,887
Depreciation Expense
12,725
6,845
7,877
2,103
4,265
4,569
11,375
17,105
18,740
19,046
2,045
4,656
-22,814
10,231
11,388
18,721
21,326
Net Income, GAAP
20.76
18.66
19.9
58.52
- -
25.04
20.4
28.57
32.43
23.76
29.06
24.22
- -
17.08
15.26
18.23
20.93
Effective Tax Rate (%)
4.08
2.7
2.78
0.64
1.4
1.54
3.52
5.03
5.19
5
0.65
1.61
-8.57
2.97
2.89
4
4.32
Profit Margin (%)
67,741
71,678
83,383
84,536
72,614
63,032
65,500
75,574
101,385
91,184
107,349
94,599
106,102
127,638
136,538
108,834
103,005
Working Capital
2,000
750
5,000
8,091
- -
5,000
5,000
- -
- -
558
6,113
704
3,656
4,266
2,673
5,861
5,243
LT Debt
113,615
126,522
133,631
132,872
135,697
138,390
149,430
156,235
174,761
193,880
191,536
204,393
221,639
228,917
227,099
228,591
222,078
Total Equity
10.09
2.8
5.09
1.05
- -
1.7
5.27
7.45
8.87
7.57
0.87
1.09
- -
2.27
2.85
5.16
5.69
Return on Invested Capital (%)
11.39
5.49
5.67
1.65
- -
3.16
6.41
9.29
10.02
8.82
1.27
1.9
- -
4.42
4.75
6.97
7.97
Return on Capital (%)
11.58
5.7
6.06
1.58
3.18
3.33
7.9
11.19
11.32
10.33
1.06
2.35
-10.71
4.54
4.99
8.22
9.5
Return on Common Equity (%)

Capital Structure

KRW

•

in mil. unless spec.
Dec'25
Mar'26
Jun'26
ST Debt
53,026
52,902
52,756
LT Borrowings
3,000
3,000
3,000
LT Finance Leases
2,861
2,582
2,243
Preferred Equity and Hybrid Capital
- -
- -
- -
Shares Outstanding
12
12
12
Market Capitalization
207,596
208,077
202,782

Working Capital

KRW

•

in mil. unless spec.
Dec'25
Mar'26
Jun'26
Total Current Assets
324,678
330,767
320,284
Cash, Cash Equivalents & STI
183,994
193,251
194,705
Accounts Receivable, Net
109,022
105,546
94,848
Inventories
5,465
5,542
5,179
Total Current Liabilities
215,844
223,175
217,279
Payables & Accruals
- -
- -
- -
ST Debt
53,026
52,902
52,756
Deferred Revenue
- -
- -
- -

Growth Rates

KRW

•

in mil. unless spec.

(avg. rate of change)

10 years
5 years
1 year
Total Equity
5.24%
3.66%
0.66%
Free Cash Flow
-320.04%
-545.66%
-2,879.97%
Net Income, GAAP
-41.02%
-106.3%
64.39%
Sales/Revenue/Turnover
5.49%
9.29%
18.86%
Total Cash Common Dividend
- -
89.39%
-3.35%

Quarterly Revenue

KRW

•

in mil. unless spec.

Year

Q1
Q2
Q3
Q4
FY
2024
91,220
94,219
98,812
109,241
393,493
2025
103,883
105,472
130,920
127,450
467,726
2026
123,785
111,944
- -
- -
- -

Quarterly Earnings Per Share

KRW

•

in mil. unless spec.

Year

Q1
Q2
Q3
Q4
FY
2024
262
180
139
268.64
850
2025
219
328
384.82
505.04
1,453
2026
348.04
468
- -
- -
- -

Quarterly Dividends Per Share

KRW

•

in mil. unless spec.

Year

Q1
Q2
Q3
Q4
FY
2024
- -
- -
- -
- -
505.85
2025
- -
- -
- -
- -
508.41
2026
- -
- -
- -
- -
- -
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Business
Dong-Ah Geological Engineering Company Ltd. (KRX: 028100) specializes in civil engineering, primarily providing underground construction and ground improvement services. The company offers mechanical tunnel construction using shield, semi-shield, and tunnel boring machine (TBM) methods; ground improvement via deep cement-soil mixing (DCM), jet grouting, and soil nailing; general civil works including roads, subways, bored piles, diaphragm walls, earthworks, and pipe jacking; engineering services such as design, research, and measurement; and environmental solutions like water treatment and wastewater reclamation systems. Founded in 1971 and headquartered in Busan, South Korea, it operates internationally with projects in Hong Kong, the Philippines, Qatar, UAE, Kuwait, Vietnam, Singapore, Cambodia, and domestically in major infrastructure such as Incheon Airport Terminal 2 railway, Seoul Subway Line 9, and Busan New Port. Recent developments include the successful indigenous manufacturing of a tunnel boring machine in 2024; securing major contracts such as a 61.6 billion won order in August 2025 and a 48.4 billion won order in April 2025; receiving 20 billion won in funding from Dover Holdings Limited and Rivendell Investments; and ongoing execution of the Hong Kong International Airport third runway expansion using marine and land DCM methods, alongside the North-South Commuter Railway in the Philippines.