Charities Netherlands Environment Stichting Open
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Stichting Open

Apeldoorn RSIN 850980410 · KVK Sign up to see website
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62
Integrity Assessment
Partial transparency
62/100 · methodology

About Stichting Open

Founded in 2007, the OPEN Foundation is the leading nonprofit organisation in the Netherlands and Europe dedicated to advancing the knowledge and understanding of psychedelics through research. We aim to optimise the potential of psychedelics in a therapeutic context and to help integrate psychedelics into society in a way that’s both sustainable and responsible. We fulfil our mission by bringing together and educating professionals, policymakers, and the public through conferences, trainings, m

Founded
Headquarters
Apeldoorn
Foundation type
Foundation (Stichting)

Verified certifications

Confirmed against the issuing authority - not self-reported.

ANBI

Focus areas & reach

· What they work on and where
🌿 Environment
SDG alignment The 17 UN Sustainable Development Goals (SDGs) are the global agenda for ending poverty, protecting the planet, and ensuring prosperity by 2030. We tag each charity to the goals its work advances.
SDG 3 SDG 3 · Good Health and Well-being Ensure healthy lives and promote well-being for all at all ages. SDG 4 SDG 4 · Quality Education Ensure inclusive and equitable quality education and promote lifelong learning opportunities for all.

How it stacks up against peers

· vs. 8 similar environment in Netherlands
Integrity Assessment This charity: 62
Peer average: 71

Red flags

· All clear
ANBI status revocation
Open investigations
Governance scandals
Related-party deals
Excessive exec comp

Common questions

· Auto-generated from filings + methodology

Stichting Open is a registered environment nonprofit based in Apeldoorn, Netherlands. It is registered with the Kamer van Koophandel (KVK). It was founded in 2007 and has been operating for 19 years. Its registration number is 850980410. It has a GiveRadar Integrity Assessment of 62/100 (Partial transparency), indicating some public data is available but key signals are missing. 6 officers and directors are publicly disclosed. No red flags have been detected.

Stichting Open has a GiveRadar Integrity Assessment of 62/100. This score combines five components: Registration (20 pts), Financial Transparency (30 pts), Governance (20 pts), Contact Availability (10 pts), and Data Recency (20 pts), with negative adjustments for any red flags. A score of 62 ('Partial transparency') means some public data is on file but key signals are missing - worth a closer look before donating. For comparison, the average integrity assessment for environment charities in Netherlands is 71/100.

Stichting Open is located in Apeldoorn, Netherlands. The organization was established in 2007 and has been active for 19 years. Its registered address is Blasiusstraat 119c, 1091CP Amsterdam, the Netherlands.

Stichting Open is classified as a Environment organization, registered in Netherlands. It operates as a Stichting. The organization has 6 disclosed officers and directors.

No red flags have been detected for Stichting Open. GiveRadar automatically screens charities for concerning patterns including high executive compensation, low program spending, and missing financial filings. Based on available official data, no issues have been identified.

Stichting Open has a GiveRadar Integrity Assessment of 62/100. We recommend reviewing the full profile before making a donation decision. The organization is overseen by the Dutch Tax Authority (Belastingdienst). You can donate directly through their official donation page linked on their GiveRadar profile. GiveRadar provides data for research purposes and does not endorse any organization. Always do your own due diligence.

Founded in 2007, the OPEN Foundation is the leading nonprofit organisation in the Netherlands and Europe dedicated to advancing the knowledge and understanding of psychedelics through research. We aim to optimise the potential of psychedelics in a therapeutic context and to help integrate psychedelics into society in a way that’s both sustainable and responsible. We fulfil our mission by bringing together and educating professionals, policymakers, and the public through conferences, trainings, m Stichting Open is classified as a environment organization registered in Netherlands. The organization was founded in 2007.

Among environment charities registered in Netherlands: Stichting Open's GiveRadar Integrity Assessment of 62/100 is in line with the peer average of 71/100.

Stichting Open is registered in the Netherlands. Stichting Open has ANBI (Algemeen Nut Beogende Instelling) status, so donations are tax-deductible. You can deduct gifts that exceed 1% of your threshold income (minimum 60 euros). Periodic gifts (committed for 5+ years) are fully deductible without threshold.

Stichting Open is a Dutch foundation (stichting) - the most common legal form for charities and public-benefit organisations in the Netherlands. A stichting has no members, is governed by a board, and is established by notarial deed for a specific purpose. It is the only Dutch legal form that can hold ANBI (public-benefit) status without member oversight. There are about 250,000 stichtingen on file at the Dutch Chamber of Commerce (KvK), of which roughly 50,000 hold ANBI status with the Belastingdienst. It is registered with the Kamer van Koophandel (KvK), the Dutch Chamber of Commerce, with RSIN 850980410.

You can verify Stichting Open's legal status in three ways. First, look up the RSIN directly on the Belastingdienst ANBI register: https://www.belastingdienst.nl/wps/wcm/connect/nl/aftrek-en-kortingen/content/anbi-status-controleren and enter 850980410. The result page confirms whether the organisation currently holds ANBI status - a prerequisite for tax-deductible donations in the Netherlands. Second, search the Kamer van Koophandel public registry at https://www.kvk.nl/zoeken/ - the KvK record shows the legal form (Stichting / Vereniging / Coöperatie), registered address, board composition (where disclosed), and the date of incorporation. Third, every ANBI is legally required by the publicatieplicht to publish on its own website: the policy plan, financial statements, an overview of activities, board composition, and remuneration policy. A working ANBI page with current financials is the strongest signal of legitimacy beyond the registry. If all three sources agree on name, address and ANBI status, the organisation is legitimate.

You can donate to Stichting Open directly through its donation page (https://open-foundation.org/donate/). Dutch charities typically accept iDEAL (the standard Dutch online-banking payment method), Tikkie payment requests, Bancontact for cross-border donors, SEPA bank transfer to the organisation's IBAN (account numbers starting with NL), and online payment processors (Mollie, Stripe). Many larger Dutch charities use platforms like Geef.nl, GeefSamen, Kentaa, and Pifworld for online fundraising. International donors can give via SEPA (the Netherlands is in the eurozone, so intra-EU transfers are cheap), PayPal, or GlobalGiving. For donations to count as a 'periodieke gift' - fully tax-deductible without a threshold - a written agreement (overeenkomst periodieke gift) committing for at least five years is required. Always confirm the recipient's RSIN and ANBI status before sending funds intended for the tax deduction.

As an ANBI, Stichting Open is legally required to publish the following information on its own website, free of charge and without a login (the 'publicatieplicht' obligation under Uitvoeringsregeling AWR 1994 art. 1a): the policy plan, an overview of the past year's activities, the financial statements (balance sheet, profit-and-loss, explanatory notes), board composition with names, and the remuneration policy for directors and key staff. Larger ANBIs (turnover above €50,000) must also publish a fuller financial report using the Belastingdienst's standard ANBI publication form. If you cannot find these documents on the organisation's website, that is a red flag worth raising with the board before donating.

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Taxes

Tax-deductibility for donors

NL donations to STICHTING OPEN are tax-deductible only if the charity holds an active ANBI registration (Algemeen Nut Beogende Instelling). Check the charity's ANBI status before claiming a deduction.

Always confirm tax treatment with the charity directly or your tax advisor before donating.

Leadership

E.
E. Krediet
Secretary

Officers & trustees (6)

Source: Public filings

E.
E. K••••••
Secretary
J.
J. B••••••••
Chair
M.
M. K•••••
Board Member
P.
P. S•••••••
Board Member
R.
R. K•••••
Treasurer
T.
T.N. T••••••
Board Member
Full names, contact details & compensation

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Peer charities

Other environment in Netherlands, by integrity assessment

Charity Score Revenue Program %
Stichting Open This page 62 - -
Stichting Landschap Noord-Holland 72 €18.7 million 92%
Stichting het Wereld Natuur Fonds-Nederland 72 €57.0 million 84%
Stichting Climbing The Right Tree 72 €378,071 93%
Stichting Het Geldersch Landschap 72 €33.6 million 93%
Stichting Natuur en Milieu 72 €8.6 million 88%
Stichting Het Limburgs Landschap 69 €23.5 million 98%
Stichting Trees for All 69 €8.8 million 86%
Stichting Water for Life 69 €2.5 million 94%

Sources and verification

Refreshed

Registration and legal identity
Belastingdienst (Dutch Tax Authority) and KVK
Officers and trustees
Belastingdienst (Dutch Tax Authority) and KVK - 6 disclosed in the public registry.

Data freshness

Last updated
May 18, 2026
Profile completeness
35%

What we don't know

Honest gaps - our score reflects transparency, not impact

Financial filings
No ANBI publication (publicatieplicht) on file
Executive compensation
Top-officer pay not disclosed
Mission statement
No self-published statement of purpose
Programs & projects
No named programs listed by the charity
Operating reach
Countries where programs run not specified
Programmatic detail
Specific cause areas not yet tagged

Methodology

GiveRadar combines public registry filings, ProPublica Nonprofit Explorer, Charity Navigator, GuideStar, and news archives into a single 0-100 integrity assessment. We don't take a cut of any donation, ever.

Read full methodology

Quick facts about Stichting Open

What is Stichting Open?
Stichting Open is a environment foundation based in Apeldoorn, Netherlands. Founded in 2007, the OPEN Foundation is the leading nonprofit organisation in the Netherlands and Europe dedicated to advancing the knowledge and understanding of psychedelics through research. We aim to optimise the potential of psychedelics in a therapeutic context and to help integrate psychedelics into society in a way that’s both sustainable and responsible. We fulfil our mission by bringing together and educating professionals, policymakers, and the public through conferences, trainings, m
When was Stichting Open founded?
Stichting Open was founded in 2007.
Where is Stichting Open located?
Headquartered in Apeldoorn, Netherlands.
Is Stichting Open trustworthy?
Stichting Open has a GiveRadar Integrity Assessment of 62 out of 100 (Partial transparency). The score reflects public-data transparency: registration, financial disclosure, governance, contact details, and how recently data was refreshed. It does not measure program impact.
What is Stichting Open's registration number?
Registration: 850980410 (Netherlands).
What is Stichting Open's website?
http://www.stichtingopen.nl
Are donations to Stichting Open tax-deductible?
Donations may be tax-deductible for residents of Netherlands under local rules. US donors should check whether the charity has an equivalency-determination letter or a US-based fiscal sponsor before claiming a deduction.