Chapter 17: Sponsor ROI & Reporting
Proving the value so they come back next time
Your event is over. Participants are happy. But your work with sponsors isn't done. The report you send sponsors in the next 1–2 weeks determines whether they sponsor your next event. A great report turns a one-time sponsor into a recurring partner. A missing report means they'll spend that budget elsewhere next year.
This chapter covers what to measure, how to report it, and how to turn data into a compelling story.
Why reporting matters
Sponsors approved your sponsorship internally by promising their leadership something: visibility, leads, product adoption, community goodwill. Your report is the evidence that they got what they paid for. Without it, the person who championed your sponsorship internally has nothing to show their boss — and they won't stick their neck out again.
Good reporting also helps you. When you approach sponsors for your next event, having concrete data from the last one ("we delivered 150 qualified developer profiles, 12 projects built on your API, and 45,000 social media impressions") is infinitely more persuasive than "it was a great event."
What to track and report
Event metrics (for all sponsors)
Attendance:
Total registrations
Actual attendance (on-site, online, total)
Show-up rate (%)
Participant demographics: roles, experience levels, industries, geographies
Engagement:
Number of teams/projects submitted
Number of challenges attempted
Slack/community engagement (messages, active participants)
Workshop attendance (if applicable)
Social media reach: posts using your hashtag, impressions, engagement
Quality indicators:
Participant satisfaction score (from your feedback survey)
Net Promoter Score (NPS) if you asked
Notable projects or innovations
Testimonials and quotes from participants
Sponsor-specific metrics
For each sponsor tier, report against the specific benefits promised:
For title/platinum sponsors:
Logo impressions: website views, email opens, social media reach
Speaking slot: audience size, recording view count
Challenge track: number of projects submitted to their challenge, quality of submissions
Participant data: profiles shared (with consent), skills breakdown
Booth interactions: conversations, demos given (on-site events)
Social media: tags, mentions, impressions
For API/product sponsors:
Number of projects that used their technology
Feedback on their API/product from participants
Bug reports or feature requests identified
Notable integrations built
For recruiting sponsors:
Participant profiles and CVs shared (with consent)
Number of participants who expressed interest in their company
Quality assessment of participant pool
Building the report
Format
A clean PDF or slide deck works best. Keep it concise — sponsors are busy. 5–10 pages/slides is the sweet spot.
Structure
Page 1: Executive summary — One page with the headline numbers. "150 participants, 32 projects, 4.5/5 satisfaction, 25,000 social impressions."
Page 2–3: Event highlights — Photos, notable projects, key moments. Make it visual. A great event photo is worth a thousand data points.
Page 4–5: Your sponsor's impact — Specific to this sponsor. Their logo visibility, their challenge results, their product usage, the participant data you're delivering. Tie everything back to what they wanted when they signed on.
Page 6: Participant feedback — Survey results, testimonials, NPS. Include 2–3 direct quotes from participants.
Page 7: Social media and PR — Screenshots of social media mentions, total reach, media coverage if any.
Page 8: Financials (optional) — If appropriate, a summary of how their sponsorship was used. This builds trust.
Page 9: What's next — Tease your next event. Include early-bird sponsorship terms if you have them. Make it easy for them to say "yes" to next time.
Delivery
Send the report within 2 weeks of the event — while it's fresh
Personalise the email: reference something specific about their participation ("Your API challenge produced some incredible projects — the team that built [X] plans to keep developing it")
Offer a debrief call to walk through the results and gather their feedback
Include raw data where relevant (anonymised participant export, social media analytics)
Financial reconciliation
Alongside sponsor reports, close your own books:
Collect all receipts and invoices
Compare actual expenses vs. budget for every category
Calculate total income, total expenses, net result
Calculate cost per participant (total cost ÷ attendance)
Calculate ROI if applicable
Document all of this. The data is essential for planning your next event's budget, and for setting realistic expectations with future sponsors.
BuilderBase analytics
BuilderBase's analytics dashboard gives you most of the data you need automatically:
Registration and attendance numbers
Team formation and submission metrics
Engagement data (platform activity, challenge participation)
Demographic breakdowns
Export this data to feed into your sponsor reports. The less manual data gathering you have to do, the faster you can deliver reports and move on to planning the next event.
The debrief call
Offer every significant sponsor a 15–30 minute debrief call. This does two things:
Gathers their feedback. What did they like? What would they change? What did they observe from the inside? This intel improves your next event.
Opens the door for next time. End the call with: "We're planning our next event for [timeframe]. Based on what worked well this time, here's what we're thinking for sponsors…" This is your warmest possible sales lead.
Key takeaways:
Send sponsor reports within 2 weeks of the event — timeliness matters as much as content
Report against the specific benefits you promised each sponsor tier
Make reports visual: photos, charts, quotes, screenshots
Include an executive summary on page 1 — busy people read that first
Offer a debrief call — it gathers feedback and opens the door for next time
Close your own financial books: compare budget vs. actual, calculate cost per participant
BuilderBase analytics provide most metrics automatically — export and use them