On a recent evening in New York, Mathew Lazarus and Matt Shenker, the co-founders of Mattermore, hosted a small gathering they called Trust by Design: AI + the Future of Work [Luma, 2026]. Mattermore is not pitching a chatbot or a copilot. It is pitching a thesis: that the next generation of people analytics has to earn the trust of the HR leader before it ever touches a manager's calendar.
Mattermore, founded in 2023 and based in New York, describes itself as an AI-driven people analytics and performance development platform personalized by workflows [Mattermore.ai]. A second public description calls it a workplace performance evolution platform combining AI and behavioral science [The Org, 2026]. The wedge is straightforward: ingest the operational signals a company already generates, run analytics on top, and feed back personalized training and leadership development. The ICP is the head of people or chief people officer at a mid-market knowledge-work employer, the kind of buyer who already has Workday or Rippling for system of record.
The bet
The interesting part of Mattermore's bet is not the analytics. What Mattermore is wagering is that behavioral science plus generative AI can finally make leadership development personalized at the individual manager level. Lazarus and Shenker have spoken publicly about using AI and behavioral science to reshape learning and leadership development [Spotify].
The company has done the unsexy work that suggests it is courting enterprise buyers seriously. Mattermore has completed SOC 2 Type 1 and has stated it is working toward Type 2 in Q1 2026 [Mattermore.ai].
Why it could be big
The tailwind here is real. Mid-market companies are under pressure to do more with flatter org charts, and the budget owner for manager effectiveness is actively shopping for tools that promise to make individual managers better without adding headcount to L&D. AI-native entrants have a credible opening because the incumbents built their products in an era when personalization meant survey segmentation, not generative content tuned to a specific manager's team and goals.
The company is also being deliberate about narrative. Lazarus hosts a podcast, Work 4.0 [Spotify], and Shenker has appeared on adjacent shows discussing the company's view of relationships at work [Spotify, 2026].
The team and traction
Mattermore is led by Mathew Lazarus as Chief Executive Officer [The Org, 2026], with Matt Shenker as co-founder [Bridges Between Us Podcast, 2026] and Trevor Cohen as co-founder and CTO [SignalHire, 2026; RocketReach, 2026]. The team is small, with company directory data indicating two to ten employees [Prospectoo, 2026], and the company is currently hiring a Backend Engineer [Mattermore.ai, 2026].
| Signal | Status | Source |
|---|---|---|
| Founded | 2023 | Mattermore.ai |
| Headcount | 2 to 10 | Prospectoo, 2026 |
| SOC 2 Type 1 | Completed | Mattermore.ai |
| SOC 2 Type 2 | Targeted Q1 2026 | Mattermore.ai |
| Open roles | Backend Engineer | Mattermore.ai, 2026 |
The honest counterfactual
What bears will say is that the people analytics and performance development category is crowded, and that a competitor like Tur.ai is chasing the same AI-native wedge. The realistic competitive set for Mattermore includes Tur.ai, Lattice, 15Five, and BetterUp. What bulls answer is that the category has historically rewarded products that own a specific workflow rather than the broadest feature set, and Mattermore's stated wedge is narrower than a full HRIS replacement and easier to land as an add-on.
What to watch
The next twelve months for Mattermore should be readable from the outside. Three things will matter: whether the company closes SOC 2 Type 2 on the stated Q1 2026 timeline, whether it announces a priced seed round, and whether any named design-partner customer surfaces in the company's own materials. A first named logo in the mid-market would be the strongest possible signal.