Chemicals · Fiscal year end Mar 31

ISHIHARA SANGYO KAISHA, LTD.

4028

石原産業株式会社

FIGI BBG000BG10814028.T4028 JPCorp. no. 9120001048976

Latest half-year results

First half · fiscal year to 2026-03 · filed 2025-11-07

For the first half of the fiscal year to 2026-03: Revenue ¥76.5 billion (+2.6% YoY), Ordinary income ¥8.5 billion (+242.0% YoY), Net income ¥5.6 billion (+677.0% YoY).

	This period	Year on year
Revenue	¥76.5bn	+2.6%
Ordinary profit	¥8.5bn	+242.0%
Net profit to owners	¥5.6bn	+677.0%

From the securities report on EDINET, which states no forecast. History via /v1/companies/4028/earnings-releases.

Financials

Japan GAAP · consolidated · fiscal year to 2026-03-31

Revenue: ¥154.9bn
Net income: ¥16.6bn
ROE: 13.7%
Equity ratio: 53.7%
Dividend / share: ¥120
Employees: 1,813

Revenue · ¥bn

Net income · ¥bn

Fiscal year	Revenue	Net income	Total assets	Net assets	ROE	EPS	Operating CF
2026-03-31	¥154.9bn	¥16.6bn	¥240.4bn	¥129.2bn	13.7%	¥434.78	¥17.3bn
2025-03-31	¥145.2bn	¥8.4bn	¥225.1bn	¥114.4bn	7.6%	¥219.98	¥18.3bn
2024-03-31	¥138.5bn	¥8.0bn	¥224.3bn	¥106.1bn	7.9%	¥209.27	−¥2.8bn
2023-03-31	¥131.2bn	¥6.9bn	¥201.9bn	¥97.4bn	7.3%	¥175.75	−¥6.0bn
2022-03-31	¥111.0bn	¥11.7bn	¥185.8bn	¥91.9bn	13.6%	¥292.58	¥16.5bn

Indicators

Computed by us from filings · fiscal year to 2026-03-31

Metric	Value	Percentile among listed companies
ROE, %	13.7	74.4
Ordinary margin	0.1403	80.7
Equity ratio, %	53.7	46.9
Revenue growth	0.0668	57.9
Net income growth	0.9781	84.4
Operating cash flow / assets	0.0718	55.6

Policy-uncertainty measure0.75 Share of the report's text discussing policy-related uncertainty, by policy area. Proprietary text method.

Trade & tariffs 1 Politics & geopolitics 1

Ownership activity 0 filer(s) stated they may make proposals in 365 days; 1 new 5% holder(s) in 180 days; net stake change −1.93pt in 90 days; 11.6% held by other listed companies.

Results wording balance: +0.50. Proprietary text method; it describes the wording only and does not interpret context.

Interest example: if all ¥69.3bn of reported debt repriced by 50 basis points, a year's interest would rise by ¥346m, 2.0% of operating cash flow. Our arithmetic only, not a forecast: fixed-rate debt and hedges are ignored.

Via /v1/companies/4028/indicators. Descriptive figures, not a rating and not investment advice.

From other filings

As the company states them

Internal control, 2026-06-24: 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しました。 Filing

Segments, votes and tender offers

Stated in EDINET filings

Segments: Organic Chemistry, Inorganic Chemistry, Other. /v1/companies/4028/segments

Latest voting result: 2026-06-25 · 剰余金の処分の件 · passed. /v1/companies/4028/voting

Ownership changes

All companies →

2026-11-06

Below 5%−1.93pt

Nomura Securities Co.,Ltd. cut holdings in ISHIHARA SANGYO KAISHA, LTD. (4028) to 3.95% from 5.88%, below the 5% threshold.

S100ZBRIFiler profile Original filing (PDF, Japanese)
2026-10-06

New 5% stake

Nomura Securities Co.,Ltd. disclosed a 5.88% stake in ISHIHARA SANGYO KAISHA, LTD. (4028), crossing the 5% reporting threshold.

S100Z62LFiler profile Original filing (PDF, Japanese)
2025-05-13

Below 5%−1.11pt

MI2 Ltd. cut holdings in ISHIHARA SANGYO KAISHA, LTD. (4028) to 3.95% from 5.06%, below the 5% threshold.

S100VPHLFiler profile Original filing (PDF, Japanese)
2024-04-19

Below 5%−0.90pt

NOMURA INTERNATIONAL PLC cut holdings in ISHIHARA SANGYO KAISHA, LTD. (4028) to 4.35% from 5.25%, below the 5% threshold.

S100TAMVFiler profile Original filing (PDF, Japanese)
2024-03-26

Stated it may make proposals

MI2 Ltd. states it may make proposals to the management of ISHIHARA SANGYO KAISHA, LTD. (4028) (first filing).

S100T37RFiler profile Original filing (PDF, Japanese)
2024-03-26

New 5% stake

MI2 Ltd. disclosed a 5.06% stake in ISHIHARA SANGYO KAISHA, LTD. (4028), crossing the 5% reporting threshold.

S100T37RFiler profile Original filing (PDF, Japanese)
2023-08-03

New 5% stake

NOMURA INTERNATIONAL PLC disclosed a 5.25% stake in ISHIHARA SANGYO KAISHA, LTD. (4028), crossing the 5% reporting threshold.

S100RIY8Filer profile Original filing (PDF, Japanese)
2023-07-21

Below 5%−1.01pt

Sumitomo Mitsui Trust Asset Management Co.,Ltd. cut holdings in ISHIHARA SANGYO KAISHA, LTD. (4028) to 4.14% from 5.15%, below the 5% threshold.

S100RF6SFiler profile Original filing (PDF, Japanese)
2022-09-22

New 5% stake

Sumitomo Mitsui Trust Asset Management Co.,Ltd. disclosed a 5.15% stake in ISHIHARA SANGYO KAISHA, LTD. (4028), crossing the 5% reporting threshold.

S100P7CQFiler profile Original filing (PDF, Japanese)

Trades by 5% holders

From the 60-day trade tables in 5% reports

Holder	Period	Net shares	Net % of shares	Avg. filed price	Range
individual filer	2024-01-19 – 2025-05-02	+473,800	+1.18pt	—	—
株式会社MI2	2024-03-01 – 2025-04-07	+425,700	+1.05pt	—	—

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/4028/trades.

5% filings

Large shareholding reports on 4028

Filed	Filer	Stake	Change	Stated purpose
2026-11-06	Nomura Securities Co.,Ltd.	3.95%	−1.93pt	—
2026-10-06	Nomura Securities Co.,Ltd.	5.88%	—	—
2025-05-13	MI2 Ltd.	3.95%	−1.11pt	may make proposals
2024-04-19	NOMURA INTERNATIONAL PLC	4.35%	−0.90pt	—
2024-03-26	MI2 Ltd.	5.06%	—	may make proposals
2023-08-03	NOMURA INTERNATIONAL PLC	5.25%	—	—
2023-07-21	Sumitomo Mitsui Trust Asset Management Co.,Ltd.	4.14%	−1.01pt	—
2022-09-22	Sumitomo Mitsui Trust Asset Management Co.,Ltd.	5.15%	—	—

Cross-shareholdings

From the annual report's status of shareholdings

Listed strategic holdings: 10 issues
Book value: ¥1.7bn
Sold in the year: — — issues
Bought in the year: ¥0m 1 issues
Mutual, both reports: 6
Held by listed cos.: 22

Holds	Book value	Shares vs. prior year	Mutual
Dainichiseika Color & Chemicals Mfg. Co., Ltd. 4116	¥666m	0.0%	both reports
Sumitomo Mitsui Financial Group, Inc. 8316	¥641m	0.0%	no
Sumitomo Mitsui Trust Group, Inc. 8309	¥127m	0.0%	no
San ju San Financial Group,Inc 7322	¥97m	0.0%	both reports
NIHON NOHYAKU CO., LTD. 4997	¥63m	0.0%	both reports
Japan Transcity Corporation 9310	¥41m	0.0%	both reports
KANEKO SEEDS CO., LTD. 1376	¥40m	0.0%	both reports
KIKUSUI CHEMICAL INDUSTRIES CO.,LTD. 7953	¥23m	0.0%	both reports
TAIYO YUDEN CO., LTD. 6976	¥10m	+9.6%	no
KOATSU GAS KOGYO CO., LTD. 4097	¥6m	0.0%	no

Held by: MITSUI & CO., LTD. 8031, TOAGOSEI CO., LTD. 4045, SBI Shinsei Bank, Limited 8303, INFRONEER Holdings Inc. 5076, The Hyakugo Bank, Ltd. 8368, KINDEN CORPORATION 1944, Japan Transcity Corporation 9310, Dainichiseika Color & Chemicals Mfg. Co., Ltd. 4116, KANEKO SEEDS CO., LTD. 1376, NIHON NOHYAKU CO., LTD. 4997, Rasa Corporation 3023, ATOMIX CO., LTD. 4625 and 10 more

Purposes, all holdings and mutual flags via /v1/companies/4028/cross-holdings. Share changes include stock splits.

Major shareholders

As of fiscal year end 2026-03-31

Shareholder	Shares	Ratio
日本マスタートラスト信託銀行株式会社(信託口)	4,911,000	12.69%
三井物産株式会社	2,019,000	5.22%
株式会社日本カストディ銀行(信託口)	1,800,000	4.65%
東亞合成株式会社	1,722,000	4.45%
individual holder	1,171,000	3.03%
ユーピーエルジャパン合同会社	1,170,000	3.02%
STATE STREET BANK AND TRUST COMPANY 505223株式会社みずほ銀行決済営業部	896,000	2.32%
石原産業従業員持株会	810,000	2.09%
DFA INTL SMALL CAP VALUE PORTFOLIOシティバンク、エヌ・エイ東京支店	760,000	1.96%
JPモルガン証券株式会社	612,000	1.58%

U.S. funds holding 4028

SEC Form N-PORT, reports to 2026-07-31

49 U.S. funds held 4,455,767 shares worth $83.9m.

Fund	Shares	Value	% of fund	As of
Avantis International Small Cap Value ETF American Century ETF Trust	753,200	$15.7m	0.079%	2026-05-31
DFA INTERNATIONAL SMALL CAP VALUE PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC	760,400	$14.0m	0.098%	2026-07-31
VANGUARD TOTAL INTERNATIONAL STOCK INDEX FUND VANGUARD STAR FUNDS	444,586	$8.2m	0.001%	2026-07-31
JPMorgan International Value ETF J.P. Morgan Exchange-Traded Fund Trust	287,700	$5.3m	0.151%	2026-07-31
VANGUARD DEVELOPED MARKETS INDEX FUND VANGUARD TAX-MANAGED FUNDS	283,597	$5.0m	0.002%	2026-06-30

Up to 25 funds per stock via the API.

Get this as JSON

GET /v1/companies/4028
GET /v1/companies/4028/financials
GET /v1/companies/4028/details
GET /v1/companies/4028/segments
GET /v1/companies/4028/voting
GET /v1/companies/4028/tender-offers
GET /v1/companies/4028/indicators
GET /v1/companies/4028/earnings-releases
GET /v1/events?ticker=4028
GET /v1/companies/4028/trades         
GET /v1/companies/4028/cross-holdings 
GET /v1/companies/4028/brief

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