GTM Strategy for Series B

The compounding event: who joined since Series A

Between Series A and Series B (typically 18-24 months), the connector universe expands dramatically. A typical Series B company gained:

• 1-2 new institutional investors with 30-60 portfolio companies each
• 3-5 advisors (operators with 300+ executive networks each)
• 30-50 new employees (each carrying prior-employer alumni networks of 100-300 people)
• 20-100 new customers (each a potential reference + referrer)
• 2-3 new executive hires (each with a 500+ person executive network from prior roles)

That's roughly 4-7x expansion of your warm graph. Most Series B companies don't capture this — they default to cold outbound because no one is responsible for compounding the warm side.

The 4 warm-intro plays for Series B

1. Investor network expansion. Your Series B lead has a network 2-3x larger than your A lead. Same playbook, bigger surface.
2. Advisor activation rituals. Move from "hopeful annual asks" to monthly structured warm-intro requests. Advisor activation alone can produce 10-20% of pipeline at Series B if formalized.
3. Customer referrals (passive). At Series B you have enough customer base to install passive customer referral programs. CSM asks at QBR "who else in your network would benefit." Yields 5-15% of pipeline if consistent.
4. Alumni warm. Your team's prior-employer networks now span 300-500 people. Tag and pursue.

The Series B trap: defaulting to cold outbound

Series B is when most companies make their biggest pipeline-strategy mistake: they hire 15-30 SDRs, build a cold outbound machine, and ignore the 4-7x warm graph expansion they just gained from the round. By Series C they're spending $2M/year on outbound that produces 8% of pipeline at 1.8% reply rates, while their warm graph sits unactivated.

How to operationalize Series B pipeline generation

Hire your first warm-intro operations person at Series B. Title: Demand Gen Manager (Warm Programs) or Sales Ops (Warm). Responsibilities: (1) catalog and score the warm graph weekly, (2) install advisor/board/customer activation rituals, (3) measure warm-vs-cold pipeline contribution, (4) report warm-intro pipeline as a budgeted channel.

For tactical playbooks at this stage, see warm outreach and the executive buyer mapping framework.