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05Sections
The guide in short
- Open with the change in the worldLead with the real market shift that makes the company matter now.
- Explain the company in one sentenceSay what the company provides, for whom, and what changes because it exists.
- Use proof that is hard to fakeChoose one or two proof points and keep each label exactly as it stands.
- Test the four-slide patternCheck the core case fits four slides of change, answer, proof and timing.
- Design for the forwardMake each slide survive a forward, with the takeaway in the title and clear units.
- Keep the full deck recognisableWrite the case once and build the teaser and the full deck from it.
- Run the sixty-second testGive an outsider sixty seconds, then check they can name the change, proof and ask.
A climate-tech teaser deck exists to earn the next serious conversation. The strongest teasers make legible the shift in the world that creates the opportunity, what the company does, one or two hard-to-fake proof points and the reason a conversation is useful now. The full technical, market and financial case follows once the investor has a reason to open it.
A teaser has a different job from the full deck
A full investor deck has to carry enough of the investment case to survive scrutiny and internal forwarding. Our piece on what an investor deck has to make easy to decide covers that job. A teaser sits earlier in the sequence. It arrives in an inbox from a founder, an adviser or a mutual contact, and the investor may give it very little time. A 2015 DocSend study reported by TechCrunch found investors spent an average of 3 minutes 44 seconds on the decks they reviewed. Those were full decks, and a teaser that arrives unannounced should expect no more time than that.
Trying to answer every diligence question in that window makes the company harder to understand. The teaser should create clarity and justified curiosity, with enough proof behind it that the next conversation feels worth having. Mystery and hype both fail that test.
Open with the change in the world
Open with the market shift when that shift is the reason the company matters now, and leave the company biography for later. Regulation may have altered the economics, or a supply constraint may have become acute. A new infrastructure layer may have made deployment possible. Customer demand may have moved, or a technical threshold may have been crossed. Choose the shift that is real and relevant to the investment case, then show the company as an answer to it. Our guide to the why-now narrative covers how to pick the change and evidence it.
A causal opening also helps the deck travel. Cognitive scientists locate the value of narrative in its causal structure. A chain of change, pressure and answer is easier to retell to a partner than a list of features.
Explain the company in one sentence that travels
The teaser should let the recipient forward the company internally without inventing their own explanation. Sentences built from category labels and adjectives fail that test. A useful description says what the company provides, for whom or where it operates, and what changes because it exists. The sentence may evolve later. It still has to be clear enough to travel now.
Choosing the sentence forces a choice of story. Koralo, a food-tech company we worked with that co-ferments microalgae and mycelium, shows why. Its earlier deck carried four propositions at once, after work on a fish alternative surfaced bioactivity in the ingredient and widened the opportunity. A teaser cannot carry four propositions. It needs the one the company is raising on, with the others as routes the full deck can open. Our Koralo case study records how we rebuilt the investor story around the functional ingredient, kept the seafood product as the route to it, and carried that story through the teaser and the full deck.
Use proof that is hard to fake
A teaser rarely needs every metric. Choose the proof that changes how the reader assesses the opportunity. Good candidates include measured performance at a relevant scale, a named or attributable customer where disclosure is permitted, contracted demand, a signed letter of intent labelled as such, a meaningful regulatory or technical milestone, a repeat order, operating data or a credible project or manufacturing milestone.
The right proof depends on the company. Resist turning a soft signal into a hard one because space is tight. "In discussion with" stays as it is and never becomes "customers include". A pipeline stays a pipeline and never becomes booked revenue. Investors check these labels later, and a teaser that overstated them loses the trust it earned. Brighter Future will not write "customers include" into a teaser for a company that is still in discussion.
A four-slide pattern
A useful pattern for the core of a teaser runs across four slides.
1. The change. What shifted in the world, market or system.
2. The answer. What the company makes possible.
3. The proof. The evidence that says this deserves attention.
4. The timing and next step. Why now, what is being raised or built, and the conversation you are asking for.
Treat the pattern as a test of whether the core case is clear enough to compress. It is one shape among several. If the company cannot explain itself in four slides, the problem usually sits in the underlying story, which cutting slides leaves untouched.
Design for the forward
Some teaser advice tells founders to hold back so much that the investor has to book a meeting to understand the company. That creates friction and reads as a puzzle. The investor should understand enough to judge whether the opportunity fits their mandate and whether the evidence is interesting. The material can leave questions open. The proposition itself should be clear.
The teaser often travels without the founder, so every slide should survive a screenshot or a phone forward. The title carries the takeaway. Units and labels are clear. The reader can tell whether each number is measured, contracted, forecast or targeted. The final page states the ask and the next step. The recipient should never have to write a paragraph translating the deck before sending it to a partner.
Keep the full deck recognisable
Heavily compressed teasers risk narrative drift. In that failure the teaser makes one sharp promise, and the full deck then opens with a different category, market or product description. Write the case out once and build both from it. The teaser earns the meeting, the full deck develops the argument and the data room supplies the deeper proof. Each artefact has its own job, and the company stays recognisable across all three.
That also decides what to leave out. The teaser rarely needs every feature, the full technology explanation, detailed team biographies, a complete competitor matrix, the whole financial model, every market segment, all project risks or a compressed data room. Those topics matter later. The test for each is whether it is required to earn the next conversation. Confidential material, such as unpublished results or customer terms, waits for diligence, once both sides have agreed how to share it.
Run the sixty-second test
Give the teaser to someone unfamiliar with the company for sixty seconds. Afterwards they should be able to say what changed, what the company does, what evidence makes it credible, why it might matter now and what the company is asking for. If they cannot, shortening the deck further will not help, and the work goes back to the story. A teaser works when it turns a complex company into a clear reason for a serious investor to keep reading.
Brighter Future builds teasers and full decks from one written case through its pitch deck work.
Sources and further reading
Brighter Future worked with KoraloRead the case study
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