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Sosh

Event Tech · San Francisco, United States · Founded 2010

Is a social mobile app that enables members to discover local activities, events and places MoreLess

Sosh operated as a digital concierge service, functioning as an app-based platform for booking tours and activities. The company was founded in 2010 by Rishi Mandal, Vivek Patel, and Rod Begbie, all of whom were former employees of Google and Slide. Mandal, who served as CEO, brought a background in physics from Stanford University and product management experience from Google. Patel's expertise was in business development and user acquisition.

The platform acted as a personal concierge for discovering and engaging in local experiences, from dining and the arts to outdoor activities. It utilized a combination of human curation and machine learning to deliver personalized recommendations based on user behavior, interests, demographics, and social connections. The primary clients were individuals in cities looking for curated local activities. For its merchant partners, Sosh provided a channel to connect with new customers. The business model focused on being a two-sided marketplace, connecting users with local businesses and activities.

Sosh's service was designed to help people break out of their routines by presenting a personalized collection of unique things to do in their city. In November 2015, the on-demand delivery company Postmates acquired the Sosh team in an "acqui-hire" deal. Eighteen of Sosh's employees, including founders Rishi Mandal and Vivek Patel, joined Postmates to help accelerate its product and business. Following the acquisition, Sosh discontinued its services and advised its merchant partners to transition to other platforms like Eventbrite.

Keywords: Sosh, local experiences, activity discovery, city guide, event booking, digital concierge, Rishi Mandal, Vivek Patel, Rod Begbie, Postmates acquisition, social platform, personalized recommendations, tour booking, activity recommendation, San Francisco startup, human curation, machine learning, local activities, two-sided marketplace

Company overview

Sosh company information

The essential company record, classifications and operating signals in one place.

Status
Acquired
Founded
2010
Headquarters
San Francisco, United States
Employees
10
Open positions
None listed
Dealroom signal
75.6
client focusb2bclient focusb2ctechnologyMobile appsectorSocialsectorAppsectorEvent ManagementindustryEvent Tech

Valuation & funding

Sosh funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITIONOther financing Oct 2015 $0 Postmates
SERIES BOther financing Aug 2013 $10M $40M Hamilton South · Mike Krieger · Donald Graham · Battery Ventures
EARLY VCOther financing Oct 2012 $1.2M $4.8M Battery Ventures
SEEDOther financing Mar 2011 $1M $4M Keith Rabois
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Financials

Workforce over time

Available workforce history. Financial fields without reported data are omitted.

YearEmployees
2026 10
2025 9
2024 8
2023 8
2022 8
2021 8
2020 7
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Growth signals

Sosh website traffic

Latest recorded traffic for Sosh is 180 monthly website visits, up 63.6% over the last three months. Sosh's team grew 11.1% over the past year.

Latest monthly visits180 3-month web change+63.6% 1-year team growth+11.1%
Monthly website visits62 observations · May 2017–Mar 2026
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Comparisons

Sosh compared with similar companies

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Talent graph

Sosh's talent

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Team profiled 18 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators Hidden — book a demo quality score
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

9 investors on Sosh's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Seed 1 investor entered at this stage
Series A 5 investors entered at this stage
Battery Ventures
Khosla Ventures
Hamilton South
Mike Krieger
Donald Graham
Other known 3 additional known investors

Global footprint

Where Sosh has talent and traffic

Workforce by country
1 countries with
team presence
🇿🇦 South Africa100%
1 country shown

In the news

Latest news about Sosh

Recent press, funding announcements, and product moves mentioning Sosh — open to read from the original sources.

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Market sentiment

What the market is saying about Sosh

An AI-synthesized read of the highest-engagement posts about Sosh on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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