Pharmaceutical · Fiscal year end Oct 31

Heartseed Inc.

219A

Ｈｅａｒｔｓｅｅｄ株式会社

FIGI BBG00QG1GKD6219A.T219A JPCorp. no. 4011001108455

Latest half-year results

First half · fiscal year to 2026-12 · filed 2026-08-14

For the first half of the fiscal year to 2026-12: Revenue ¥0.5 billion (-75.6% YoY), Ordinary income ¥-0.6 billion (-165.3% YoY), Net income ¥-0.6 billion (-178.4% YoY).

	This period	Year on year
Revenue	¥467m	-75.6%
Ordinary profit	−¥552m	-165.3%
Net profit to owners	−¥554m	-178.4%

From the securities report on EDINET, which states no forecast. History via /v1/companies/219A/earnings-releases.

Financials

Japan GAAP · non-consolidated · fiscal year to 2025-12-31

Revenue: ¥3.0bn
Net income: ¥191m
ROE: 2.8%
Equity ratio: 93.7%
Dividend / share: —
Employees: 43

Revenue · ¥bn

Net income · ¥bn

Fiscal year	Revenue	Net income	Total assets	Net assets	ROE	EPS	Operating CF
2025-12-31	¥3,027m	¥191m	¥7,676m	¥7,195m	2.8%	¥8.44	¥1,081m
2024-12-31	¥874m	−¥813m	¥7,068m	¥6,623m	—	¥-49.43	−¥1,343m
2023-12-31	¥345m	−¥1,474m	¥5,720m	¥5,270m	—	¥-106.81	−¥798m
2022-12-31	¥499m	−¥1,413m	¥4,936m	¥4,728m	—	¥-128.99	−¥1,922m
2021-12-31	¥1,635m	−¥258m	¥6,316m	¥6,140m	—	¥-18,900.01	—

Indicators

Computed by us from filings · fiscal year to 2025-12-31

Metric	Value	Percentile among listed companies
ROE, %	2.76	13.9
Ordinary margin	0.0955	65.8
Equity ratio, %	93.67	99.7
Revenue growth	2.4644	99.8
Net income growth	1.2345	87.4
Operating cash flow / assets	0.1408	87.7

Policy-uncertainty measure0.43 Share of the report's text discussing policy-related uncertainty, by policy area. Proprietary text method.

Fiscal & tax 1 Regulation 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 −0.81pt in 90 days; 5.4% held by other listed companies.

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

Via /v1/companies/219A/indicators. Descriptive figures, not a rating and not investment advice.

From other filings

As the company states them

Internal control, 2026-03-26: 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た。 Filing

Segments, votes and tender offers

Stated in EDINET filings

Latest voting result: 2026-03-27 · 定款一部変更の件 · passed. /v1/companies/219A/voting

Ownership changes

All companies →

2026-08-28

Decrease−0.81pt

individual filer reduced holdings in Heartseed Inc. (219A) to 13.74% from 14.55%.

S100YYUNOriginal filing (PDF, Japanese)
2025-12-17

Amendment−0.05pt

SBI Investment Co., Ltd. filed a correction to a 5% report on Heartseed Inc. (219A).

S100XB20Filer profile Original filing (PDF, Japanese)
2025-12-17

Amendment−1.40pt

SBI Investment Co., Ltd. filed a correction to a 5% report on Heartseed Inc. (219A).

S100XB29Filer profile Original filing (PDF, Japanese)
2025-12-17

Amendment−1.20pt

SBI Investment Co., Ltd. filed a correction to a 5% report on Heartseed Inc. (219A).

S100XB2DFiler profile Original filing (PDF, Japanese)
2025-12-17

Amendment−1.15pt

SBI Investment Co., Ltd. filed a correction to a 5% report on Heartseed Inc. (219A).

S100XB2FFiler profile Original filing (PDF, Japanese)
2025-12-17

Amendment−1.02pt

SBI Investment Co., Ltd. filed a correction to a 5% report on Heartseed Inc. (219A).

S100XB2JFiler profile Original filing (PDF, Japanese)
2025-12-15

Decrease−0.74pt

SBI Investment Co., Ltd. reduced holdings in Heartseed Inc. (219A) to 12.05% from 12.79%.

S100XAEFFiler profile Original filing (PDF, Japanese)
2025-09-26

Decrease−1.02pt

SBI Investment Co., Ltd. reduced holdings in Heartseed Inc. (219A) to 12.79% from 13.81%.

S100WR6YFiler profile Original filing (PDF, Japanese)
2025-09-17

Decrease−1.15pt

SBI Investment Co., Ltd. reduced holdings in Heartseed Inc. (219A) to 13.81% from 14.96%.

S100WPKRFiler profile Original filing (PDF, Japanese)
2025-08-29

Decrease−1.20pt

SBI Investment Co., Ltd. reduced holdings in Heartseed Inc. (219A) to 14.96% from 16.16%.

S100WLWQFiler 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	2026-08-21 – 2026-08-21	+500,000	+2.18pt	¥2,229	¥2,229–2,229
individual filer	2026-08-21 – 2026-08-21	-500,000	−2.18pt	¥2,229	¥2,229–2,229
株式会社SBI証券	2025-02-25 – 2025-12-08	-71	0.00pt	¥2,080.89	¥1,607–2,630
SBIインベストメント株式会社	2024-07-30 – 2025-09-18	-1,124,700	−4.93pt	¥1,160	¥1,160–1,160
individual filer	2025-03-10 – 2025-03-26	-60,000	−0.24pt	—	—
Angel Bridge Deal-by-Deal Fund 5号株式会社	2024-07-31 – 2024-10-04	-1,715,400	−7.70pt	—	—

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/219A/trades.

5% filings

Large shareholding reports on 219A

Filed	Filer	Stake	Change	Stated purpose
2026-08-28	individual filer	13.74%	−0.81pt	—
2025-12-17	SBI Investment Co., Ltd.	17.56%	−0.05pt	pure investment
2025-12-17	SBI Investment Co., Ltd.	16.16%	−1.40pt	pure investment
2025-12-17	SBI Investment Co., Ltd.	14.96%	−1.20pt	pure investment
2025-12-17	SBI Investment Co., Ltd.	13.81%	−1.15pt	pure investment
2025-12-17	SBI Investment Co., Ltd.	12.79%	−1.02pt	pure investment
2025-12-15	SBI Investment Co., Ltd.	12.05%	−0.74pt	pure investment
2025-09-26	SBI Investment Co., Ltd.	12.79%	−1.02pt	pure investment
2025-09-17	SBI Investment Co., Ltd.	13.81%	−1.15pt	pure investment
2025-08-29	SBI Investment Co., Ltd.	14.96%	−1.20pt	pure investment

Cross-shareholdings

From the annual report's status of shareholdings

Listed strategic holdings: — issues
Book value: —
Sold in the year: — — issues
Bought in the year: — — issues
Mutual, both reports: 0
Held by listed cos.: 5

Held by: JMDC Inc. 4483, MEDIPAL HOLDINGS CORPORATION 7459, SHIBUYA CORPORATION 6340, Ajinomoto Co., Inc. 2802, Kidswell Bio Corporation 4584

Purposes, all holdings and mutual flags via /v1/companies/219A/cross-holdings. Share changes include stock splits.

Major shareholders

As of fiscal year end 2025-12-31

Shareholder	Shares	Ratio
individual holder	3,146,000	13.76%
individual holder	2,236,800	9.79%
individual holder	920,000	4.02%
individual holder	842,400	3.69%
individual holder	650,000	2.84%
individual holder	461,600	2.02%
individual holder	441,000	1.93%
individual holder	350,000	1.53%
SBI AI&Blockchain投資事業有限責任組合	264,700	1.16%
㈱メディパルホールディングス	250,000	1.09%

U.S. funds holding 219A

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

1 U.S. funds held 29,800 shares worth $0.3m.

Fund	Shares	Value	% of fund	As of
iShares International Small-Cap Equity Factor ETF iShares Trust	29,800	$0.3m	0.048%	2026-07-31

Up to 25 funds per stock via the API.

Get this as JSON

GET /v1/companies/219A
GET /v1/companies/219A/financials
GET /v1/companies/219A/details
GET /v1/companies/219A/segments
GET /v1/companies/219A/voting
GET /v1/companies/219A/tender-offers
GET /v1/companies/219A/indicators
GET /v1/companies/219A/earnings-releases
GET /v1/events?ticker=219A
GET /v1/companies/219A/trades         
GET /v1/companies/219A/cross-holdings 
GET /v1/companies/219A/brief

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