Services · Fiscal year end Sep 30

SEIYU KOGYO Co.,Ltd.

9170

成友興業株式会社

FIGI BBG001CQN4Y59170.T9170 JPCorp. no. 5013101000994

Latest half-year results

First half · fiscal year to 2026-09 · filed 2026-05-13

For the first half of the fiscal year to 2026-09: Revenue ¥9.1 billion (+15.4% YoY), Ordinary income ¥0.8 billion (+32.8% YoY), Net income ¥0.4 billion (+27.6% YoY).

	This period	Year on year
Revenue	¥9.1bn	+15.4%
Ordinary profit	¥804m	+32.8%
Net profit to owners	¥420m	+27.6%

From the securities report on EDINET, which states no forecast. History via /v1/companies/9170/earnings-releases.

Financials

Japan GAAP · consolidated · fiscal year to 2025-09-30

Revenue: ¥15.3bn
Net income: ¥603m
ROE: 11.7%
Equity ratio: 33.0%
Dividend / share: ¥40
Employees: 368

Revenue · ¥bn

Net income · ¥m

Fiscal year	Revenue	Net income	Total assets	Net assets	ROE	EPS	Operating CF
2025-09-30	¥15.3bn	¥0.6bn	¥16.4bn	¥5.6bn	11.7%	¥214.38	¥1.8bn
2024-09-30	¥13.7bn	¥0.5bn	¥15.9bn	¥5.0bn	10.8%	¥183.88	¥0.7bn
2023-09-30	¥12.3bn	¥0.4bn	¥11.6bn	¥4.0bn	9.4%	¥142.9	¥0.4bn
2022-09-30	¥11.1bn	¥0.3bn	¥10.5bn	¥3.7bn	7.8%	¥111.14	¥0.5bn
2021-09-30	¥11.9bn	¥0.2bn	¥11.2bn	¥3.5bn	7.0%	¥94.31	¥0.7bn

Indicators

Computed by us from filings · fiscal year to 2025-09-30

Metric	Value	Percentile among listed companies
ROE, %	11.7	66.7
Ordinary margin	0.067	49
Equity ratio, %	32.99	17.1
Revenue growth	0.1159	73.6
Net income growth	0.2608	61.7
Operating cash flow / assets	0.1091	77.4

Policy-uncertainty measure0.37 Share of the report's text discussing policy-related uncertainty, by policy area. Proprietary text method.

Fiscal & tax 1

Ownership activity 0 filer(s) stated they may make proposals in 365 days; 0 new 5% holder(s) in 180 days; net stake change −8.96pt in 90 days; 0.0% held by other listed companies.

Results wording balance: +1.00. Proprietary text method; it describes the wording only and does not interpret context.

Interest example: if all ¥6.7bn of reported debt repriced by 50 basis points, a year's interest would rise by ¥33m, 1.9% of operating cash flow. Our arithmetic only, not a forecast: fixed-rate debt and hedges are ignored.

Via /v1/companies/9170/indicators. Descriptive figures, not a rating and not investment advice.

From other filings

As the company states them

Internal control, 2025-12-18: see filing 上記の評価の結果、当事業年度末日時点において、当社の財務報告に係る内部統制は有効であると判断いたしました。 Filing

Segments, votes and tender offers

Stated in EDINET filings

Segments: Environment Business, Construction Business, Environment Engineering, Other. /v1/companies/9170/segments

Latest voting result: 2025-12-19 · 剰余金処分の件 · passed. /v1/companies/9170/voting

Ownership changes

All companies →

2026-08-28

Decrease−8.96pt

individual filer reduced holdings in SEIYU KOGYO Co.,Ltd. (9170) to 78.66% from 87.62%.

S100YSW0Original filing (PDF, Japanese)
2024-08-09

New 5% stake

Odake Company Co., Ltd disclosed a 7.11% stake in SEIYU KOGYO Co.,Ltd. (9170), crossing the 5% reporting threshold.

S100U7ASFiler profile Original filing (PDF, Japanese)
2024-08-06

Increase+0.02pt

Yamazaki Gravel Inc. raised holdings in SEIYU KOGYO Co.,Ltd. (9170) to 5.13% from 5.11%.

S100TF16Filer profile Original filing (PDF, Japanese)
2024-08-06

Amendment+0.02pt

Yamazaki Gravel Inc. filed a correction to a 5% report on SEIYU KOGYO Co.,Ltd. (9170).

S100U645Filer profile Original filing (PDF, Japanese)
2024-06-21

Amendment−0.14pt

individual filer filed a correction to a 5% report on SEIYU KOGYO Co.,Ltd. (9170).

S100TPCDOriginal filing (PDF, Japanese)
2024-06-19

Decrease−0.01pt

individual filer reduced holdings in SEIYU KOGYO Co.,Ltd. (9170) to 87.62% from 87.63%.

S100TNO3Original filing (PDF, Japanese)
2024-04-05

Amendment0.00pt

Yamazaki Gravel Inc. filed a correction to a 5% report on SEIYU KOGYO Co.,Ltd. (9170).

S100T7FXFiler profile Original filing (PDF, Japanese)
2024-03-22

Decrease−0.01pt

Yamazaki Gravel Inc. reduced holdings in SEIYU KOGYO Co.,Ltd. (9170) to 5.13% from 5.14%.

S100T3EGFiler profile Original filing (PDF, Japanese)
2024-03-18

Amendment0.00pt

Yamazaki Gravel Inc. filed a correction to a 5% report on SEIYU KOGYO Co.,Ltd. (9170).

S100T2J6Filer profile Original filing (PDF, Japanese)
2024-03-15

Amendment0.00pt

Yamazaki Gravel Inc. filed a correction to a 5% report on SEIYU KOGYO Co.,Ltd. (9170).

S100T1VHFiler profile Original filing (PDF, Japanese)

Trades by 5% holders

From the 60-day trade tables in 5% reports

Bought SoldHover a dot for the trade

Holder	Period	Net shares	Net % of shares	Avg. filed price	Range
individual filer	2023-10-13 – 2026-08-25	-822,175	−58.69pt	¥3,274.77	¥1,843–3,600
individual filer	2024-06-12 – 2026-07-01	+643,975	+49.99pt	¥3,600	¥3,600–3,600
株式会社大岳カンパニー	2024-07-01 – 2024-08-08	0	0.00pt	—	—
株式会社山﨑砂利商店	2024-03-14 – 2024-05-09	+15,800	+1.22pt	¥3,009.49	¥3,000–3,500
株式会社ホライズン	2024-03-14 – 2024-03-14	-1,200	−0.09pt	¥3,000	¥3,000–3,000
株式会社ヤマゼン	2024-03-14 – 2024-03-14	-7,500	−0.58pt	¥3,000	¥3,000–3,000
株式会社山﨑ホールディングス	2024-03-14 – 2024-03-14	-6,800	−0.53pt	¥3,000	¥3,000–3,000
株式会社山﨑砂利商店	2023-10-13 – 2023-12-29	+50,300	+3.92pt	¥2,355.7	¥2,100–3,645
株式会社山﨑ホールディングス	2023-10-30 – 2023-12-28	+4,700	+0.39pt	—	—
株式会社ホライズン	2023-11-24 – 2023-12-27	+1,100	+0.09pt	—	—
individual filer	2023-12-21 – 2023-12-21	+300	+0.02pt	—	—
株式会社ヤマゼン	2023-11-14 – 2023-12-11	+7,500	+0.59pt	—	—

Net shares and the average are our calculations. Prices are filed prices as stated by the filer, mostly for off-market trades; they are not market prices. Stock lending, custody transfers and option exercises are excluded from net shares. Every row via /v1/companies/9170/trades.

5% filings

Large shareholding reports on 9170

Filed	Filer	Stake	Change	Stated purpose
2026-08-28	individual filer	78.66%	−8.96pt	—
2024-08-09	Odake Company Co., Ltd	7.11%	—	pure investment
2024-08-06	Yamazaki Gravel Inc.	5.13%	+0.02pt	—
2024-08-06	Yamazaki Gravel Inc.	5.13%	+0.02pt	—
2024-06-21	individual filer	87.62%	−0.14pt	—
2024-06-19	individual filer	87.62%	−0.01pt	—
2024-04-05	Yamazaki Gravel Inc.	5.13%	0.00pt	—
2024-03-22	Yamazaki Gravel Inc.	5.13%	−0.01pt	—
2024-03-18	Yamazaki Gravel Inc.	5.13%	—	—
2024-03-15	Yamazaki Gravel Inc.	5.13%	—	—

Cross-shareholdings

From the annual report's status of shareholdings

Listed strategic holdings: 2 issues
Book value: ¥12m
Sold in the year: — — issues
Bought in the year: ¥2m 2 issues
Mutual, both reports: 0
Held by listed cos.: 0

Holds	Book value	Shares vs. prior year	Mutual
OBAYASHI CORPORATION 1802	¥9m	+11.4%	no
DAIHO CORPORATION 1822	¥3m	+36.5%	no

Purposes, all holdings and mutual flags via /v1/companies/9170/cross-holdings. Share changes include stock splits.

Major shareholders

As of fiscal year end 2025-09-30

Shareholder	Shares	Ratio
株式会社細沼	1,287,950	45.70%
individual holder	669,592	23.76%
individual holder	266,276	9.45%
株式会社大岳カンパニー	196,000	6.95%
株式会社山崎砂利商店	132,200	4.69%
成友興業従業員持株会	73,800	2.62%
individual holder	33,582	1.19%
西武信用金庫	30,303	1.08%
多摩信用金庫	9,000	0.32%
individual holder	9,000	0.32%

Get this as JSON

GET /v1/companies/9170
GET /v1/companies/9170/financials
GET /v1/companies/9170/details
GET /v1/companies/9170/segments
GET /v1/companies/9170/voting
GET /v1/companies/9170/tender-offers
GET /v1/companies/9170/indicators
GET /v1/companies/9170/earnings-releases
GET /v1/events?ticker=9170
GET /v1/companies/9170/trades         
GET /v1/companies/9170/cross-holdings 
GET /v1/companies/9170/brief

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