The 64·22 July 2026 · Brussels & Tomorrowland
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The Corinthia Grand Hotel Astoria
SociisGroup
The Independent Behavioural Institution
The Founding Gathering
22 July 2026

The 64

One seat. Two rooms.
No second chance.
22 July 2026 · Corinthia Grand Hotel Astoria, Brussels
23 July 2026 · On the iconic grounds of Tomorrowland
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The Founding Gathering · The 300 included

Built once.
For sixty-four people who do not need to perform.

The 64 is the Founding Gathering. One seat carries two days. The boutique gala at the Corinthia Grand Hotel Astoria on 22 July. The 300 on the iconic grounds of Tomorrowland on 23 July, in collaboration with Love Tomorrow.

No more than sixty-four in the room. Once the room is full, it is full. There is no waitlist. There is no second evening.

One seat, two rooms

The evening, and the day that carries it forward

The evening.
The 64 · 22 July
Corinthia Grand Hotel Astoria
Formal gala
Arrival

Champagne from the first minute

Champagne and canapés as the room gathers. Sixty-four people, in direct proximity.

A cultural opening

A live moment

A live moment that sets the tone for the evening.

The keynote

Hein Wagner

A blind man with a vision. One voice, held for this room.

The gala dinner

Five courses by David Martin

David Martin, chef of two-Michelin-star La Paix. One night only.

Defining moments

Sarah McArthur

Sarah McArthur on Frances Hesselbein.

The pieces

Offered, never auctioned

A small number of pieces stand in service of the causes the room serves.

The close

A final moment

Held back on purpose.

Corinthia Grand Hotel Astoria, Brussels – Palm Court
Corinthia Grand Hotel Astoria, Brussels
Dress code · The 64
Formal gala.

For the evening at Corinthia Grand Hotel Astoria, guests are invited to dress formally and with presence.

Gentlemen: tuxedo encouraged, or a dark tailored suit with a formal shirt and polished dress shoes.

Ladies: evening gown, long dress, refined cocktail dress or elegant evening separates. Evening suits and tailored trousers are welcome when styled formally.

All refined colours are welcome.

Jeans, sneakers, casual wear and overly informal clothing are not appropriate for this occasion.

The day after.
The 300 · 23 July
On the iconic grounds of Tomorrowland

Your seat carries forward, in collaboration with Love Tomorrow.

Elevated summer
From 10:30

Arrival

The room gathers at the Crystal Garden. A drink, a welcome, no rush.

Midday

The Gala Lunch

Seated at the Crystal Garden. Mediterranean kitchen. The lunch is the room.

The voices

Dr Tessy Ojo CBE, The Diana Award

Leaders, each with one thing to say.

The first time

Let There Be Light

A short teaser, and then Jean Bosco Safari performs the song live, for the first time anywhere.

From 16:00

Into the Summit

Full access through the evening, food and drink included.

Dress code · The 300
Elevated summer.

The 300 takes place during the day and continues into the evening on the iconic grounds of Tomorrowland. Guests are invited to dress refined, comfortable and summer-appropriate.

This is a seated gala lunch and a full-day gathering, not a casual festival visit.

No beachwear, sportswear, flip-flops or overly casual clothing.

What this is

We serve humanity by changing how the world behaves.

Behaviour is upstream of strategy, of disclosure, of reporting. If individuals and communities change how they behave, the system changes with them.

SociisGroup is the first behavioural institution in the world. Culture moves faster than governance, so we begin with the room, the people in it, and the standards they carry out into the world. The 64 is where that work begins.

The Room

Who you sit beside

Sixty-four curated international leaders, in direct proximity for two days. The product is not the room. It is the people in it, the causes the room serves, and the year you were in it.

64
Seats, never more
2
Days, one seat
1
Founding edition
Voices in the room · The Founding Edition
Dr Tessy Ojo CBE
CEO, The Diana Award
Mikkel Juel Iversen
Founder, Under One Sky
Hein Wagner
A blind man with a vision
Sarah McArthur
Editor-in-Chief, Leader to Leader
Jean Bosco Safari
Let There Be Light, cultural anchor
Zanele Morrison
Host, Global Engagement
Dominique Debecker
Chief Behavioural Officer, SociisGroup
Jeremie Landweer
Founder, SociisGroup · The Close

All participants attend in a personal capacity. Further voices forming.

In service of

A room composed to serve

The Diana Award

Youth potential and leadership, worldwide.

Under One Sky

Homelessness, shelter and dignity.

Nelson Mandela Foundation

Social justice, dialogue and human dignity.

A small number of pieces stand in service of these causes. Offered, never auctioned.
To take a seat is to stand with the causes the room serves.

A seat is not a ticket to an evening. It is a place among people who have chosen to serve, on the days an institution built to do the same begins its work in public.

What your seat includes

One seat. Both days.

Everything across the two days, carried by one seat.

The boutique gala at the Corinthia Grand Hotel Astoria. Five courses by David Martin, chef of two-Michelin-star La Paix.
The Keynote. Hein Wagner, one voice held for this room.
Sixty-four curated international leaders in direct proximity.
Full access to The 300 and the Summit on 23 July, on the iconic grounds of Tomorrowland.
The Gala Lunch at the Crystal Garden, then the Summit through the evening. Food and drink included.
The Pieces, offered in service of the causes the room serves.
Let There Be Light. The song, live, for the first time anywhere.
Access to Sociis House, the continuous environment of the institution.
One contribution, both days
€2,500
excl. 21% Belgian VAT
The 64 includes The 300. The 300 does not include The 64.

Curation applies. A seat is confirmed in conversation, then held with payment.

Begin the conversation

Curation is confirmed before payment. Companies receive a full VAT invoice.

Take your seat

How a seat is held

No form. No checkout. One confidential conversation, and a seat is held.

01

You write

One line to hello@sociisgroup.com. No pressure, only clarity.

02

We speak

One confidential alignment conversation. We confirm the room is right for you, and you for it.

03

The seat is held

Your seat across both days is reserved. The detail follows privately.

04

You are in the room

On the first list, forever. Only one edition is ever first.

Write to hello@sociisgroup.com

One founding edition.
The only one that will ever be first.

No more than sixty-four. Once the room is full, it is full.


You do not join SociisGroup.
You become Sociis.

In collaboration with
Love Tomorrow