# A-ONE SEIMITSU INC.: business model and financials

> Latest period: FY ending Jun 2025, non-consolidated, J-GAAP
> Unit: JPY millions
> Sources: 有価証券報告書－第35期(2024/07/01－2025/06/30) (S100WQRX)
> Page: https://vizora.meequs.com/en/company/a-one-seimitsu
> Retrieved: 2026-09-30T21:34:47.058Z

## Company

A-One Seimitsu, founded in 1990, is a company in Machine Tools listed on TSE Standard. It has 109 employees (consolidated).

| Field | Value |
| --- | ---: |
| Legal name | A-ONE SEIMITSU INC. |
| Ticker | 6156 |
| Stock price | View on Yahoo Finance (https://finance.yahoo.co.jp/quote/6156.T) |
| Listing | TSE Standard |
| Head office | 東京都府中市分梅町二丁目20番5号 |
| Representative (per filing) | 代表取締役社長 林哲也 |
| Founded | Jul 1990 |
| Share capital | ¥292.5M |
| Employees (consolidated) | 109 |
| Average salary (parent only) | ¥5.1M |
| Fiscal year end | June |
| Website | www.a-one-seimitsu.co.jp (https://www.a-one-seimitsu.co.jp/) |
| Corporate number | 5012401000218 |
| EDINET | E02343 |
| Industries (Vizora) | Machine Tools |

> Profile source: annual securities report (S100WQRX, filed 2025-09-29). As of filing

## Five-axis industry profile

Primary industry: Machine Tools (2025-06-30)

| Axis | Industry percentile | Peers |
| --- | ---: | ---: |
| Revenue growth | 7.4 | 34 |
| Profitability | 39.7 | 34 |
| Cash conversion | 79 | 31 |
| Efficiency | 1.5 | 34 |

Each axis is shown independently. Missing values are labeled unavailable; no combined score is calculated. Industry rank is not an investment recommendation.

## Key points (generated from figures)

- About 70% of A-One Seimitsu's sales come from Collet chucks, with Cutting tools and Cam for automatic turning machines making up much of the rest.
- Out of every ¥100 of sales, about ¥5 is left as operating profit.
- Revenue changed -0.7% from the prior year, operating profit -48.6%.

## Key figures at a glance

| Metric | Value | Note |
| --- | ---: | ---: |
| Revenue | ¥1.59B |  |
| Operating income | ¥84.7M | Margin 5.3% |
| Net income | -¥221.3M | Margin -13.9% |
| Free cash flow | -¥62.6M |  |
| Largest business | Collet chucks | of segment revenue 69.5% |
| Employees (consolidated) | 109 |  |
| EPS | ¥-44.09 |  |
| Book value per share | ¥1491.04 |  |
| Equity ratio | 92.9% |  |
| Shares outstanding | 5,300,000 |  |
| Treasury shares | 279,700 |  |
| Shareholders | 6,428 |  |
| Average salary (parent only) | ¥5.1M | Filing company only |
| Cash ratio | 5.4% | Cash ÷ revenue 27.2% |
| Vs. industry median margin | -1.8 pp | Machine Tools |
| ROA | -2.6% | Derived from disclosed figures |

## Notable figures

- FY2025, one segment accounts for 97% of positive segment profit
- FY2025, segment profit share differs by 27 points

## What changed in 5 years

| Metric | FY ending Jun 2020 | FY ending Jun 2025 | Change |
| --- | ---: | ---: | ---: |
| Revenue | ¥1760226000 | ¥1590845000 | -9.6% |
| Operating income | ¥451422000 | ¥84655000 | -81.2% |
| Operating margin | 25.6% | 5.3% | -20.3 pp |
| Employees | 101 people | 109 people | +7.9% |
| Cash and equivalents | ¥1028987000 | ¥433389000 | -57.9% |

### Change in segment revenue mix

Span: FY ending Jun 2020 → FY ending Jun 2025. Stable segment keys are connected; unmatched shares are marked as new or reorganized. Shares use total segment revenue.

| Flow | Revenue share |
| --- | ---: |
| コレットチャック部門 → コレットチャック部門 | 69.5% |
| コレットチャック部門 → 事業再編・廃止 | 0.4% |
| 切削工具部門 → 切削工具部門 | 28.6% |
| 自動旋盤用カム部門 → 自動旋盤用カム部門 | 0.9% |
| 自動旋盤用カム部門 → 事業再編・廃止 | 0.6% |
| 新設・再編 → 切削工具部門 | 1.0% |

Segment revenue source references: 6 (derived)

## Business growth × margin

X-axis: segment revenue CAGR. Y-axis: latest operating margin. Bubble size: latest revenue. CAGR requires at least two comparable years.

| Segment | CAGR span | Revenue CAGR | Latest revenue | Operating margin | Source refs |
| --- | ---: | ---: | ---: | ---: | ---: |
| Collet chucks | 5 years | -2.1% | ¥1106068000 | 36.8% | 2 |
| Cutting tools | 5 years | -1.3% | ¥470433000 | 2.9% | 2 |
| Cam for automatic turning machines | 5 years | -11.1% | ¥14344000 | -24.5% | 2 |

## Income statement（FY ending Jun 2025, non-consolidated, J-GAAP）

| Item | Amount (JPY mn) | % of revenue | Source |
| --- | ---: | ---: | ---: |
| Revenue | 1,591 | 100.0% | S100WQRX |
| Cost of revenue | 1,174 | 73.8% | S100WQRX |
| Gross profit | 417 | 26.2% | S100WQRX |
| SG&A | 332 | 20.9% | S100WQRX |
| Operating income | 85 | 5.3% | S100WQRX |
| Ordinary income | 120 | 7.5% | S100WQRX |
| Pretax income | -327 | -20.5% | S100WQRX |
| Income tax | -106 | -6.6% | S100WQRX |
| Net income | -221 | -13.9% | S100WQRX |

## Per ¥100 of revenue（FY ending Jun 2025）

| Part | JPY |
| --- | ---: |
| Cost of revenue | 74 |
| SG&A | 21 |
| Operating income | 5 |
| (Ref.) Net income | -14 |

### Margin funnel

Gross margin 26.2% → Operating margin 5.3% → Net margin -13.9%
Derived from reported figures (DERIVED).

## Revenue and profit pattern

Pattern: Revenue and profit down
Revenue growth: -0.7%; Core profit growth: -48.6%
Operating leverage (core profit growth ÷ revenue growth): 72.65×
Calculated from comparable annual consolidated filings.

## Year over year（FY ending Jun 2024 → FY ending Jun 2025、JPY mn）

| Metric | Prior | Current | Change | % change |
| --- | ---: | ---: | ---: | ---: |
| Revenue | 1,602 | 1,591 | -11 | -0.7% |
| Gross profit | 474 | 417 | -57 | -12.1% |
| Operating income | 165 | 85 | -80 | -48.6% |
| Operating cash flow | 342 | 151 | -191 | -55.8% |
| Free cash flow | 104 | -63 | -167 | -159.9% |

## History（JPY mn）

| Period | Revenue | Op. income | Op. margin | Net income | Op. CF | FCF | Source |
| --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: |
| FY ending Jun 2019 | 2,084 | 637 | 30.6% | 448 | 643 | 565 | S100JQNS |
| FY ending Jun 2020 | 1,760 | 451 | 25.6% | 319 | 443 | 276 | S100MGLI |
| FY ending Jun 2021 | 1,670 | 379 | 22.7% | 269 | 392 | 256 | S100P872 |
| FY ending Jun 2022 | 1,868 | 433 | 23.2% | 310 | 606 | 421 | S100RVPC |
| FY ending Jun 2023 | 1,755 | 276 | 15.7% | 192 | 423 | 353 | S100UEKK |
| FY ending Jun 2024 | 1,602 | 165 | 10.3% | 121 | 342 | 104 | S100WQRX |
| FY ending Jun 2025 | 1,591 | 85 | 5.3% | -221 | 151 | -63 | S100WQRX |

## People and productivity（FY ending Jun 2025, non-consolidated, J-GAAP）

| Metric | Value |
| --- | ---: |
| Revenue per employee (consolidated) | ¥14.6M |
| Operating income per employee (consolidated) | ¥776.7K |
| Net income per employee (consolidated) | -¥2M |

Employees, revenue and profit are consolidated. Average annual salary is a separate parent-company figure. Calculated from disclosed figures (DERIVED).

| History | FY ending Jun 2021 | FY ending Jun 2022 | FY ending Jun 2023 | FY ending Jun 2024 | FY ending Jun 2025 |
| --- | ---: | ---: | ---: | ---: | ---: |
| Employees (consolidated) | 101 | 102 | 106 | 108 | 109 |
| Average salary (parent company) | ¥4.9M | ¥5.1M | ¥5M | ¥4.7M | ¥5.1M |
| Average age (parent company) | 41.6 years | 41.3 years | 41.3 years | 40.6 years | 41.5 years |
| Average tenure (parent company) | 12.8 years | 12.6 years | 12.7 years | 12.2 years | 12.8 years |

Year over year: Employees (consolidated) +0.9% · Revenue (consolidated) -0.7%

## Segments（FY ending Jun 2025, non-consolidated, J-GAAP、JPY mn）

| Segment | Revenue | Share | Op. income | Op. margin |
| --- | ---: | ---: | ---: | ---: |
| Collet chucks | 1,106 | 69.5% | 406 | 36.8% |
| Cutting tools | 470 | 29.6% | 14 | 2.9% |
| Cam for automatic turning machines | 14 | 0.9% | -4 | -24.5% |

### segmentMix — Revenue and profit mix

Calculated from disclosed figures (DERIVED). Shares use total segment revenue and total positive segment profit respectively. Difference = profit share − revenue share (pt). Inter-segment sales may prevent reconciliation to company revenue.

| Segment | Revenue share | Profit share | Difference (pt) | Margin |
| --- | ---: | ---: | ---: | ---: |
| Collet chucks | 69.5% | 96.8% | 27.2 | 36.8% |
| Cutting tools | 29.6% | 3.2% | -26.3 | 2.9% |
| Cam for automatic turning machines | 0.9% | — | — | -24.5% |

Loss-making segment (excluded from profit shares): Cam for automatic turning machines -4 JPY mn

Segment → industry: Cam for automatic turning machines → Machine Tools / Cutting tools → Machine Tools / Collet chucks → Machine Tools

## Revenue by geography

No geographic revenue breakdown was disclosed.

## Cash flow（FY ending Jun 2025, non-consolidated, J-GAAP）

| Item | Amount (JPY mn) | % of revenue | Source |
| --- | ---: | ---: | ---: |
| Operating cash flow | 151 | 9.5% | S100WQRX |
| Capital expenditure | 214 | 13.5% | S100WQRX |
| Free cash flow | -63 | -3.9% | 算出 |
| Investing cash flow | 105 | 6.6% | S100WQRX |
| Financing cash flow | -502 | -31.5% | S100WQRX |
| Dividends paid | 501 | 31.5% | S100WQRX |
| Change in cash | -246 | -15.4% | S100WQRX |
| Cash and equivalents | 433 | 27.2% | S100WQRX |

## Balance sheet

Figures are as of each fiscal year end. Derived values are marked as such in the source column. Lease liabilities are excluded from interest-bearing debt.

| Metric | FY ending Jun 2021 | FY ending Jun 2022 | FY ending Jun 2023 | FY ending Jun 2024 | FY ending Jun 2025 | Source |
| --- | ---: | ---: | ---: | ---: | ---: | ---: |
| Cash and equivalents | 1,043 | 1,128 | 976 | 679 | 433 | S100RVPC, S100UEKK, S100WQRX |
| Total assets | 9,096 | 9,479 | 9,207 | 8,947 | 8,059 | S100P872, S100RVPC, S100UEKK, S100WQRX |
| Net assets | 8,412 | 8,689 | 8,431 | 8,188 | 7,485 | S100RVPC, S100UEKK, S100WQRX |
| Share capital | 293 | 293 | 293 | 293 | 293 | S100P872, S100RVPC, S100UEKK, S100WQRX |
| Property, plant and equipment | 1,254 | 1,284 | 1,196 | 1,254 | 802 | S100P872, S100RVPC, S100UEKK, S100WQRX |
| Intangible assets excluding goodwill | 4 | 4 | 3 | 51 | 51 | S100P872, S100RVPC, S100UEKK, S100WQRX |
| Investment securities | 132 | 145 | 219 | 873 | 1,561 | S100P872, S100RVPC, S100UEKK, S100WQRX |
| Current assets | 7,546 | 7,720 | 7,538 | 6,569 | 5,347 | S100P872, S100RVPC, S100UEKK, S100WQRX |
| Current liabilities | 199 | 265 | 202 | 211 | 108 | S100P872, S100RVPC, S100UEKK, S100WQRX |
| Total liabilities | 684 | 791 | 775 | 758 | 573 | S100P872, S100RVPC, S100UEKK, S100WQRX |
| Equity attributable to owners of parent | 8,382 | 8,649 | 8,340 | 7,990 | 7,281 | S100P872, S100RVPC, S100UEKK, S100WQRX |
| Retained earnings | 8,593 | 8,568 | 8,259 | 7,535 | 6,812 | S100P872, S100RVPC, S100UEKK, S100WQRX |
| Treasury stock | -841 | -692 | -692 | -195 | -189 | S100P872, S100RVPC, S100UEKK, S100WQRX |

### Assets and funding mix

| Assets | Share | Source |
| --- | ---: | ---: |
| Cash | 5% | S100WQRX |
| Property, plant and equipment | 10% | S100WQRX |
| Intangibles and goodwill | 1% | S100WQRX |
| Investment securities | 19% | S100WQRX |
| Other assets | 65% | S100WQRX |

| Funding source | Share | Source |
| --- | ---: | ---: |
| Other liabilities | 7% | S100WQRX |
| Equity | 93% | S100WQRX |

### Balance sheet history

| Metric | FY ending Jun 2021 | FY ending Jun 2022 | FY ending Jun 2023 | FY ending Jun 2024 | FY ending Jun 2025 |
| --- | ---: | ---: | ---: | ---: | ---: |
| Total assets | 9,096 | 9,479 | 9,207 | 8,947 | 8,059 |
| Equity | 8,412 | 8,689 | 8,431 | 8,188 | 7,485 |
| Interest-bearing debt | — | — | — | — | — |
| Cash | 1,043 | 1,128 | 976 | 679 | 433 |

## Asset intensity and goodwill

Ratios are derived from reported values. Goodwill is used only when separately reported, never inferred from combined intangible assets.

| Metric | Value | Sources |
| --- | ---: | ---: |
| Asset intensity (fixed assets ÷ revenue) | 50.4% | S100WQRX |
| Fixed assets ÷ total assets | 10.0% | S100WQRX |
| Goodwill ÷ parent equity | — | —, S100WQRX |

### Cash quality

Net cash = cash − interest-bearing debt. Net debt ratio = (interest-bearing debt − cash) ÷ positive operating cash flow. Omit when debt components are incomplete; other ratios are derived from reported figures.

| Metric | Value |
| --- | ---: |
| Cash ratio (cash ÷ total assets) | 5.4% |
| Cash ÷ revenue | 27.2% |
| Net cash (cash − interest-bearing debt) | — |
| Net debt ÷ operating cash flow | — |
| Cash conversion (operating CF ÷ operating income) | 178.9% |
| Cash vs. profit gap | 373 JPY mn |
| Shareholder returns / net income | — |
| Shareholder returns / FCF | — |
| Shareholder payments — dividends / net income | — |
| Shareholder payments — dividends / FCF | — |
| CapEx intensity (capex ÷ revenue) | 13.5% |
| Investing CF relative to operating CF | 69.2% |

## ROA and ROE

ROE is decomposed into net margin × asset turnover × financial leverage. Leverage can raise ROE, so the ratio alone does not assess a company's condition. Ending balances are used without a prior year; total equity approximates parent equity when unavailable.

| Period | Net margin | Asset turnover | ROA | Financial leverage | ROE | Sources |
| --- | ---: | ---: | ---: | ---: | ---: | ---: |
| 2021 | 16.1% | 0.18× | 3.0% | 1.09× | 3.2% | S100P872 |
| 2022 | 16.6% | 0.20× | 3.3% | 1.09× | 3.6% | S100RVPC |
| 2023 | 10.9% | 0.19× | 2.1% | 1.10× | 2.3% | S100UEKK |
| 2024 | 7.5% | 0.18× | 1.3% | 1.11× | 1.5% | S100WQRX |
| 2025 | — | —× | -2.6% | —× | — | S100WQRX |

## Ownership

| Counterparty | Relation | Ratio | As of |
| --- | ---: | ---: | ---: |
| 株式会社致知 | Major shareholder | 25.3% | 2025-06-30 |
| 株式会社日本カストディ銀行 （信託口） | Major shareholder | 4.0% | 2025-06-30 |
| 肥田 亘 | Major shareholder | 2.0% | 2025-06-30 |
| 竹内 忠夫 | Major shareholder | 1.6% | 2025-06-30 |
| 大嶋 武司 | Major shareholder | 0.9% | 2025-06-30 |
| 大橋 逸夫 | Major shareholder | 0.9% | 2025-06-30 |
| 横山 和也 | Major shareholder | 0.6% | 2025-06-30 |
| 佐藤 美喜夫 | Major shareholder | 0.6% | 2025-06-30 |
| 湯舟 吉人 | Major shareholder | 0.6% | 2025-06-30 |
| 室田 武師 | Major shareholder | 0.5% | 2025-06-30 |

## Sources

| Document | ID | Published | URL |
| --- | ---: | ---: | ---: |
| 有価証券報告書－第35期(2024/07/01－2025/06/30) | S100WQRX | 2025-09-29 | https://disclosure2.edinet-fsa.go.jp/WZEK0040.aspx?S100WQRX,, |
| 有価証券報告書－第34期(2023/07/01－2024/06/30) | S100UEKK | 2024-09-24 | https://disclosure2.edinet-fsa.go.jp/WZEK0040.aspx?S100UEKK,, |
| 有価証券報告書－第33期(2022/07/01－2023/06/30) | S100RVPC | 2023-09-25 | https://disclosure2.edinet-fsa.go.jp/WZEK0040.aspx?S100RVPC,, |
| 有価証券報告書－第32期(令和3年7月1日－令和4年6月30日) | S100P872 | 2022-09-26 | https://disclosure2.edinet-fsa.go.jp/WZEK0040.aspx?S100P872,, |
| 有価証券報告書－第31期(令和2年7月1日－令和3年6月30日) | S100MGLI | 2021-09-27 | https://disclosure2.edinet-fsa.go.jp/WZEK0040.aspx?S100MGLI,, |
| 有価証券報告書－第30期(令和1年7月1日－令和2年6月30日) | S100JQNS | 2020-09-28 | https://disclosure2.edinet-fsa.go.jp/WZEK0040.aspx?S100JQNS,, |

## Definitions

- Amounts are in millions of JPY (rounded). The period is stated in each table heading
- Operating margin = operating income ÷ revenue. Net income is attributable to owners of the parent when disclosed
- Free cash flow (FCF) = operating cash flow − capital expenditure
- ¥100 model = breakdown per ¥100 of revenue (rounded so parts sum to 100)
- Segment revenues include inter-segment sales and may not sum to consolidated revenue
- Source IDs are EDINET document IDs (docID). "算出" (derived) means computed from other disclosed values
- All figures are extracted mechanically from filings. AI-written text never generates figures
- Source: company filings submitted to EDINET (Financial Services Agency of Japan). Figures were extracted, edited and processed, and charts and text were created, by Vizora — not by the FSA (used under the Public Data License v1.0).