The Venture Codex

Participated · Series B · Apr 2026

Starfish Space develops in-space infrastructure and satellite-servicing missions, including its Otter program and earlier efforts like Remora and Otter Pup 2. The company has announced commercial and government contracts, naming the Space Development Agency and the U.S. Space Force as customers. Starfish plans to fly its first full Otter mission later this year. The firm is scaling operations and hiring to support growing customer demand. Recent funding from its Series B will finance mission build-and-operate activities and team expansion. The articles did not provide information on revenue, user metrics, founding year, or location.

Participated · Series C · Jan 2026

Zanskar combines artificial intelligence, modern drilling techniques, and computational geoscience to find, assess, and develop geothermal energy resources. The company has a portfolio of greenfield geothermal projects, including the Lightning Dock site in New Mexico and recent discoveries at Pumpernickel and Big Blind in Nevada, plus two announced discovery sites in Nevada. Financially, Zanskar completed a $115 million Series C in January 2026 (later expanded with additional investment from Just Climate) and has now closed a $40 million revolving Development Capital Facility structured to scale to $100 million. Zanskar plans to use the new facility to fund pre-construction work and bridge projects to traditional project financing so it can rapidly build multiple geothermal power plants. The company aims to deliver gigawatts of clean, firm power to U.S. customers and expects to create hundreds of jobs as it scales development. Zanskar markets its approach as making geothermal more predictable, lowering development costs, and enabling large-scale deployment of dispatchable baseload power.

Participated · Series B · Nov 2025

Sweet Security is a Tel Aviv–based cybersecurity company focused on runtime Cloud-Native Application Protection Platform (CNAPP) and AI security. Its platform combines runtime context with AI-powered analytics to offer detection and response, vulnerability and posture management, identity threat protection, and API security, all driven by a patented LLM-based detection engine that cuts alert noise to 0.04%. The firm recently added an AI Security Platform that discovers every model and agent, detects adversarial attacks such as prompt injection, and hardens AI infrastructure. Over the past year, Sweet achieved 6× ARR growth and a 10× increase in enterprise customers, including multiple Fortune 1000 organizations. The company holds a newly granted U.S. patent that trains an LLM to identify anomalous log sessions, enabling it to uncover complex multi-step attacks missed by rule-based tools. Founded by Dror Kashti, Eyal Fisher, and Orel Ben Ishay, Sweet plans to use new capital to accelerate global expansion and product innovation as demand surges for real-time cloud and AI protection. Total funding now stands at $120 million, underscoring strong investor confidence in its growth trajectory.

Participated · Seed · Oct 2025

Notch builds an autonomous AI platform that deploys AI agents to automate and execute both conversational and back-office operational workflows while providing visibility, governance, and auditability required for regulated environments. The platform is positioned to move AI deployments from pilots to production by delivering operational results with human oversight and compliance controls. Notch’s solution acts like a company’s support agent, autonomously resolving complex customer inquiries with consistency across channels and languages. The company is led by CEO Rafael Broshi and is headquartered in New York City. Following the $30M Series A, Notch’s total disclosed funding stands at $45M. The company plans to use the new capital to accelerate U.S. expansion and continue developing its platform as an AI operating system for regulated industries.

Led · Series A · Sep 2025

Fourth Power is a four-year-old startup based in Cambridge, Massachusetts that is building grid-scale thermal batteries designed for eight-plus hours of discharge. The system stores electricity by heating carbon blocks in argon-filled, insulated chambers and later pumps 2,400 °C molten tin through graphite pipes; thermophotovoltaic cells then convert the emitted infrared heat back into electricity. Thanks to an insulation layer made from petroleum coke, the battery loses only about 1 % of its stored energy per day. The company is currently testing smaller prototypes and is designing a 1 MWh demonstration unit. Management projects first commercial systems in 2028 at costs that undercut both lithium-ion batteries and peaking natural-gas plants, ultimately targeting $25 per kilowatt-hour—roughly one-tenth today’s lithium-ion costs. Fourth Power has raised $39 million to date, including a recently closed $20 million Series A Plus round and a $19 million Series A in 2023, to fund technology development and scale-up.