The HBS European Alumni Summit 2026 runs 25-27 September 2026 in Amsterdam, hosted by the Harvard Business School Club of the Netherlands, under the theme 'Leadership for One World'.
Day-of venue photograph, 26 September 2026: the group at the HBS European Alumni Summit 2026 with the summit's own banner — 'Leadership For One World · HBS European Alumni Summit · Amsterdam 2026' — and the HBS shield, both legible in frame. Published by the HBS-alumni attendee @KojiroMoriwaka (post 2103754743688663134, 2026-09-26 07:53 GMT). Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right, off the faces. Single-publisher frame: it is NOT an attendance list and no person other than the named publisher is identified.Day-of venue photograph, 26 September 2026: two attendees in summit lanyards reading 'HBS EUROPEAN ALUMNI SUMMIT · AMSTERDAM', in a grand Amsterdam hall. Published by @KojiroMoriwaka (post 2103770005435453876, 2026-09-26 08:53 GMT) with a caption naming the event series. Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right, off the faces. Single publisher; the second person in frame is an unnamed delegate and is deliberately not identified — no private-guest doxx, no name inference.Day-of venue photograph, 26 September 2026: summit attendees networking in an art-gallery room holding Old Master paintings, part of the weekend's cultural programme. Published by @KojiroMoriwaka (post 2103710423086481436, 2026-09-26 04:57 GMT). Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right, off the faces. Single publisher. The venue is NOT asserted: the host club publishes no venue, so the room is described only as what is visible, not named as a museum.Day-of venue photograph, 26 September 2026 (12:26 GMT): a delegate at the HBS European Alumni Summit 2026 standing beside the summit's own banner — 'Leadership For One World · HBS European Alumni Summit · Amsterdam 2026' with the HBS shield, both fully legible in frame. Published by the HBS-alumni attendee @KojiroMoriwaka (post 2103823634079113632). Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right, off the subject. Single-publisher frame; it is not an attendance list and no delegate other than the named publisher is identified.Day-of venue photograph, 26 September 2026 (12:05 GMT): the plenary hall with the summit's own delegate folder in frame — 'Harvard Business School · Club of the Netherlands · European Alumni Summit Amsterdam 2026 · Sponsored by Syngenta' — a slide reading 'Big Questions' on the stage screen and a speaker at the lectern. Published by the HBS-alumni attendee @KojiroMoriwaka (adjacent frame; the packet publishes no post id for this image). Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right. No delegate is identified; no speaker is named (the organizer publishes no speaker list).Day-of venue photograph, 27 September 2026: the summit's gala hall — painted ceiling, chandeliers and gold drapes — filled with delegates during the closing day's reception. Real day-of photograph published by the HBS-alumni attendee @KojiroMoriwaka (post 2104096705033724334, 2026-09-27 06:32 GMT). Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right, off the faces. No delegate is identified, and the room is described only as what is visible — it is NOT named as a venue.Day-of venue photograph, 27 September 2026: wide view of the summit ballroom from the back of the hall, delegates standing and seated towards the stage end beneath the painted ceiling and chandeliers. Real day-of photograph published by @KojiroMoriwaka (post 2104096705033724334, 2026-09-27 06:32 GMT). Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right, off the faces. No delegate is identified; no venue is named.Day-of venue photograph, 27 September 2026: a group of delegates wearing summit lanyards posing together in the gala hall's gold-draped corner. Real day-of photograph published by @KojiroMoriwaka (post 2104096705033724334, 2026-09-27 06:32 GMT). Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right, off the faces. This is a single-publisher group frame, not an attendance list: nobody in frame is named and no name is inferred from a lanyard or a face.Day-of frame, 27 September 2026: summit delegates beside an Amsterdam canal at golden hour, with the city's rooftops and a harbour behind them — part of the closing day's programme. Real day-of photograph published by @KojiroMoriwaka (post 2104096705033724334, 2026-09-27 06:32 GMT). Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right, off the faces. No delegate is identified and no location beyond the city is asserted.Day-of frame, 27 September 2026 (00:24 GMT): delegates wearing summit badges, glasses in hand, in front of an Amsterdam brick canal house during the closing day's programme. Real day-of photograph published by @KojiroMoriwaka (post 2104004230776283272). Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right, off the faces. No delegate is identified; the building is described only as what is visible and is not named.Post-summit frame, published 28 September 2026 (04:53 GMT): delegates aboard an Amsterdam canal-cruise saloon during the summit's canal programme, the canal and its bridges passing outside the curved glass roof. Real photograph published by the HBS-alumni attendee @KojiroMoriwaka (post 2104434236749119573). Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right, off the faces. Single publisher, and it is NOT an attendance list: nobody in frame is named and no name is read off a lanyard or a face; no venue is asserted.Post-summit frame, published 28 September 2026 (04:53 GMT): a delegate group on the open deck of an Amsterdam canal boat with the city's canal houses and moored boats behind them, summit lanyards in frame. Real photograph published by @KojiroMoriwaka (post 2104434236749119573). Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right, off the faces. Single-publisher group frame, not an attendance list: nobody is named and no identity is inferred from a lanyard or a face.Post-summit gathering, 27 September 2026 (21:43 GMT): an HBS-alumni group at an Amsterdam restaurant terrace after the summit's final-day brunch. The publisher's own caption describes this as a gathering he arranged himself outside the summit programme (post 2104326189146116268) — it is NOT an official summit session and is not presented as one; it is carried only as a post-summit alumni frame. Real photograph published by @KojiroMoriwaka. Re-hosted on our own origin with the UnicornsMap.com $UM-Radar watermark bottom-right, off the faces. Nobody in frame is named and the restaurant is not named.
🧑 公開アジェンダ登壇者（OSINT検証済み、信頼度 HIGH）
John Kojiro MoriwakaCEO & founder — family-office / VC / PE advisor; HBS alumnus (PLD)Silicon Valley Ventures (Tokyo)
