The 18 Largest US Funding Rounds of April 2026 – AlleyWatch

April 2026 opened with an announcement. A single $10B spherical to Undertaking Prometheus – Jeff Bezos’s AI firm focusing on the bodily economic system – set the tone for a month. Leveraging knowledge from CrunchBase, this report tracks the most important US startup funding rounds of April 2026, masking every firm’s spherical sort, founding staff, trade focus, investor syndicate, and complete fairness raised so far. Past the headline numbers, the offers replicate a decisive shift in enterprise conviction: protection tech, nuclear vitality, autonomous programs, and AI infrastructure are now not rising themes – they’re the place the largest checks are going

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18. Scout AI $100.0M

Spherical: Collection A
Description: Sunnyvale-based Scout AI develops AI programs for protection robotics, centered on enabling autonomous conduct throughout unmanned platforms. Based by Colby Adcock and Collin Otis in 2024, Scout AI has now raised a complete of $115.2M in complete fairness funding and is backed by Gaingels, Draper Associates, Booz Allen Ventures, FJ Labs, and Decisive Level.
Traders within the spherical: Align Ventures, Booz Allen Ventures, Bravo Victor Enterprise Capital, Decisive Level, Disruptive Founders Fund, Draper Associates, Evolution VC Companions, FJ Labs, Heraclitus Capital Administration, Monte Carlo Capital, Neman Ventures, Shane Neman, Sigmas Group, Vaughn Capital Companions
Trade: Aerospace, Synthetic Intelligence (AI), Manufacturing
Founders: Colby Adcock, Collin Otis
Founding yr: 2024
Location: Sunnyvale
Complete fairness funding raised: $115.2M

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18. Parallel $100.0M

Spherical: Collection B
Description: Palo Alto-based Parallel develops a brokers and power APIs for constructing AI that accesses and makes use of the open net. Based by Parag Agrawal in 2023, Parallel has now raised a complete of $260M in complete fairness funding and is backed by Khosla Ventures, Sequoia Capital, Kleiner Perkins, First Spherical Capital, and Index Ventures.
Traders within the spherical: Index Ventures, Khosla Ventures, Kleiner Perkins, Sequoia Capital
Trade: Synthetic Intelligence (AI), Developer APIs, Data Know-how
Founders: Parag Agrawal
Founding yr: 2023
Location: Palo Alto
Complete fairness funding raised: $260.0M

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18. Slash $100.0M

Spherical: Collection C
Description: San Francisco-based Slash supplies a monetary expertise platform that helps companies handle monetary operations by a unified digital system. Based by Kevin Bai and Victor Cardenas in 2020, Slash has now raised a complete of $160M in complete fairness funding and is backed by Menlo Ventures, Khosla Ventures, Y Combinator, New Enterprise Associates, and Goodwater Capital.
Traders within the spherical: Goodwater Capital, Khosla Ventures, Ribbit Capital, Y Combinator
Trade: Banking, Monetary Providers, FinTech, Funds
Founders: Kevin Bai, Victor Cardenas
Founding yr: 2020
Location: San Francisco
Complete fairness funding raised: $160.0M

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18. Chapter $100.0M

Spherical: Collection E
Description: New York-based Chapter presents a Medicare navigation platform offering advisory providers for seniors searching for well being protection. Based by Cobi Blumenfeld-Gantz, Corey Metzman, and Vivek Ramaswamy in 2013, Chapter has now raised a complete of $284M in complete fairness funding and is backed by Techstars, 8VC, SV Angel, XYZ Enterprise Capital, and Maverick Ventures.
Traders within the spherical: 8VC, Addition, Fifth Down Capital, Era Funding Administration, Maverick Ventures, Narya Capital, Stripes, Susa Ventures, XYZ Enterprise Capital
Trade: Aged, Well being Care, Well being Insurance coverage, Medical
Founders: Cobi Blumenfeld-Gantz, Corey Metzman, Vivek Ramaswamy
Founding yr: 2013
Location: New York
Complete fairness funding raised: $284.0M

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17. Netomi $110.0M

Spherical: Collection C
Description: San Mateo-based Netomi supplies Generative AI for enterprises. Based by Puneet Mehta in 2015, Netomi has now raised a complete of $217M in complete fairness funding and is backed by BoxGroup, Y Combinator, Index Ventures, WndrCo, and Salesforce Ventures.
Traders within the spherical:
Trade: Synthetic Intelligence (AI), Buyer Service, Digital Advertising, Enterprise Software program, Machine Studying, SaaS, Software program
Founders: Puneet Mehta
Founding yr: 2015
Location: San Mateo
Complete fairness funding raised: $217.0M

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17. Skydio $110.0M

Spherical: Collection F
Description: San Mateo-based Skydio makes use of AI to create flying drones which are for client, enterprise, and authorities clients. Based by Abraham Bachrach, Adam Bry, and Matt Donahoe in 2014, Skydio has now raised a complete of $850M in complete fairness funding and is backed by Andreessen Horowitz, Accel, Gaingels, NVIDIA, and IVP.
Traders within the spherical:
Trade: Synthetic Intelligence (AI), Drone Administration, Drones, Machine Studying, Robotics
Founders: Abraham Bachrach, Adam Bry, Matt Donahoe
Founding yr: 2014
Location: San Mateo
Complete fairness funding raised: $850.0M

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16. Starfish House $111.7M

Spherical: Collection B
Description: Seattle-based Starfish House develops and manufactures autonomous area autos that carry out in-orbit, satellite tv for pc servicing missions. Based by Austin Hyperlink and Trevor Bennett in 2019, Starfish House has now raised a complete of $169.7M in complete fairness funding and is backed by Gaingels, Alumni Ventures, Protect Capital, Toyota Ventures, and NFX.
Traders within the spherical: Activate Capital Companions, Gaingels, Industrious Ventures, Munich Re Ventures, NFX, NightDragon, Nomi Capital, Overlap Holdings, Point72 Ventures, PSL Ventures, Protect Capital, Toyota Ventures
Trade: Aerospace, Manufacturing, House Journey, Transportation
Founders: Austin Hyperlink, Trevor Bennett
Founding yr: 2019
Location: Seattle
Complete fairness funding raised: $169.7M

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15. Havra $113.0M

Spherical: Seed
Description: Mcallen-based Havra is a software program firm that streamline the worldwide provide chain with insightful software program and providers. Based by J. Ayala and W. Steele in 2023, Havra has now raised a complete of $115.7M in complete fairness funding and is backed by Antler, Provide Change Capital, Ollin Ventures, and Audaz Capital.
Traders within the spherical:
Trade: Synthetic Intelligence (AI), FinTech, Data Know-how, Logistics
Founders: J. Ayala, W. Steele
Founding yr: 2023
Location: Mcallen
Complete fairness funding raised: $115.7M

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14. Omni $120.0M

Spherical: Collection C
Description: San Francisco-based Omni supplies a knowledge collaboration and analytics platform that helps groups discover, mannequin, and share enterprise knowledge in a single atmosphere. Based by Christopher Merrick, Colin Zima, and Jamie Davidson in 2022, Omni has now raised a complete of $215.9M in complete fairness funding and is backed by BoxGroup, First Spherical Capital, ICONIQ Development, Principle Ventures, and Quiet Capital.
Traders within the spherical: First Spherical Capital, Google Ventures, ICONIQ Development, Redpoint, Principle Ventures
Trade: Analytics, Synthetic Intelligence (AI), Enterprise Intelligence, Data Know-how, SaaS, Software program
Founders: Christopher Merrick, Colin Zima, Jamie Davidson
Founding yr: 2022
Location: San Francisco
Complete fairness funding raised: $215.9M

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13. Aria Networks $125.0M

Spherical: Collection A
Description: Palo Alto-based Aria Networks develops an AI-powered networking platform that screens, analyses, and optimises knowledge heart efficiency. Based by Mansour Karam in 2025, Aria Networks has now raised a complete of $125M in complete fairness funding and is backed by Eclipse, Valor Fairness Companions, Sutter Hill Ventures, and Atreides Administration.
Traders within the spherical: Atreides Administration, Eclipse, Sutter Hill Ventures, Valor Fairness Companions
Trade: AI Infrastructure, Synthetic Intelligence (AI), Knowledge Middle Automation, Community {Hardware}
Founders: Mansour Karam
Founding yr: 2025
Location: Palo Alto
Complete fairness funding raised: $125.0M

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13. Avoca $125.0M

Spherical: Collection B
Description: New York-based Avoca makes use of AI brokers to deal with inbound and outbound interactions, together with dealing with buyer calls and managing leads. Based by Apurva Shrivastava and Tyson Chen in 2022, Avoca has now raised a complete of $125.5M in complete fairness funding and is backed by Basic Catalyst, BoxGroup, Nexus Enterprise Companions, Kleiner Perkins, and Y Combinator.
Traders within the spherical: Alt Capital, Amplify Companions, BoxGroup, Basic Catalyst, Kleiner Perkins, Meritech Capital Companions, Nexus Enterprise Companions, Y Combinator
Trade: Synthetic Intelligence (AI), Enterprise Course of Automation (BPA), Software program
Founders: Apurva Shrivastava, Tyson Chen
Founding yr: 2022
Location: New York
Complete fairness funding raised: $125.5M

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12. Hightouch $150.0M

Spherical: Collection D
Description: San Francisco-based Hightouch is an agentic advertising and marketing platform that makes use of a Composable Buyer Knowledge Platform (CDP) to reinforce advertising and marketing efforts. Based by Josh Curl, Kashish Gupta, and Tejas Manohar in 2018, Hightouch has now raised a complete of $332.2M in complete fairness funding and is backed by Y Combinator, ICONIQ Development, Sapphire Ventures, Bain Capital Ventures, and Salesforce Ventures.
Traders within the spherical: Amplify Companions, Bain Capital Ventures, Goldman Sachs, ICONIQ Capital, Sapphire Ventures, TD7, Y Combinator
Trade: Agentic AI, CRM, Developer Platform, Advertising, SaaS
Founders: Josh Curl, Kashish Gupta, Tejas Manohar
Founding yr: 2018
Location: San Francisco
Complete fairness funding raised: $332.2M

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11. Manufacturing unit $150.0M

Spherical: Collection C
Description: San Francisco-based Manufacturing unit supplies software program improvement brokers that combine into present engineering workflows and instruments. Based by Eno Reyes and Matan Grinberg in 2023, Manufacturing unit has now raised a complete of $220M in complete fairness funding and is backed by NVIDIA, BoxGroup, Khosla Ventures, Sequoia Capital, and Perception Companions.
Traders within the spherical: Summary, Blackstone Group, Evantic Capital, Perception Companions, Khosla Ventures, MANTIS Enterprise Capital, Sequoia Capital, The Twenty Minute VC
Trade: Agentic AI, Synthetic Intelligence (AI), Developer Instruments, Software program Engineering
Founders: Eno Reyes, Matan Grinberg
Founding yr: 2023
Location: San Francisco
Complete fairness funding raised: $220.0M

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10. Dependable Robotics $160.0M

Spherical: Collection D
Description: Mountain View-based Dependable Robotics develops automation programs for plane that allow remotely operated and autonomous flight operations. Based by Juerg Frefel and Robert Rose in 2017, Dependable Robotics has now raised a complete of $293.5M in complete fairness funding and is backed by Island Inexperienced Capital, Gaingels, Lightspeed Enterprise Companions, Eclipse, and Coatue.
Traders within the spherical: AE Ventures, Calm Ventures, Coatue, Eclipse, Gaingels, Island Inexperienced Capital, KAS Enterprise Companions, Lightspeed Enterprise Companions, Mana Ventures, Nimble Companions, Pathbreaker Ventures, Presidio Ventures, RTX Ventures, Socium Ventures, UP Companions, What If Ventures
Trade: Air Transportation, Synthetic Intelligence (AI), Autonomous Autos
Founders: Juerg Frefel, Robert Rose
Founding yr: 2017
Location: Mountain View
Complete fairness funding raised: $293.5M

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10. Rogo $160.0M

Spherical: Collection D
Description: New York-based Rogo.ai is an AI platform for finance that automates analysis, evaluation, and monetary workflows for funding banks and buyers. Based by Gabriel Stengel, John Willett, and Tumas Rackaitis in 2021, Rogo has now raised a complete of $314M in complete fairness funding and is backed by BoxGroup, Khosla Ventures, Sequoia Capital, Kleiner Perkins, and Alt Capital.
Traders within the spherical: BoxGroup, Evantic Capital, Jack Altman, J.P. Morgan Development Fairness Companions, Khosla Ventures, Kleiner Perkins, MANTIS Enterprise Capital, Optimistic Sum, Sequoia Capital, Thrive Capital
Trade: Analytics, Synthetic Intelligence (AI), Enterprise Intelligence, Monetary Providers, FinTech, Generative AI
Founders: Gabriel Stengel, John Willett, Tumas Rackaitis
Founding yr: 2021
Location: New York
Complete fairness funding raised: $314.0M

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9. Glydways $170.0M

Spherical: Collection C
Description: South San Francisco-based Glydways develops autonomous transportation programs that mix small electrical autos with devoted guideways for city mobility. Based by Mark Seeger in 2016, Glydways has now raised a complete of $382.5M in complete fairness funding and is backed by Khosla Ventures, Alumni Ventures, UpHonest Capital, Gates Frontier Fund, and New Science Ventures.
Traders within the spherical: ACS Group Listing, Gates Frontier Fund, Khosla Ventures, Mitsui Chemical compounds, Obayashi Company, Suzuki Motor
Trade: Clear Power, Electrical Automobile, Manufacturing, Transportation
Founders: Mark Seeger
Founding yr: 2016
Location: South San Francisco
Complete fairness funding raised: $382.5M

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8. Hermeus $200.0M

Spherical: Collection C
Description: El Segundo-based Hermeus is a protection aviation firm that designs, builds, and checks high-Mach and hypersonic plane. Based by AJ Piplica, Glenn Case, Michael Smayda, and Skyler Shuford in 2018, Hermeus has now raised a complete of $356M in complete fairness funding and is backed by Khosla Ventures, Founders Fund, Bling Capital, 137 Ventures, and Karman Ventures.
Traders within the spherical: 137 Ventures, Bling Capital, Canaan Companions, Circadian Ventures, Cox Enterprises, Future (D/XYZ), Founders Fund, Georgia Tech Basis, GSBackers, IQT, Karman Ventures, Khosla Ventures, RTX Ventures, Socium Ventures
Trade: Aerospace, Air Transportation, Industrial Manufacturing, Manufacturing, Navy
Founders: AJ Piplica, Glenn Case, Michael Smayda, Skyler Shuford
Founding yr: 2018
Location: El Segundo
Complete fairness funding raised: $356.0M

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8. Flock Security $200.0M

Spherical: Collection I
Description: Atlanta-based Flock Security supplies end-to-end surveillance options to help regulation enforcement and communities. Based by Garrett Langley and Matt Feury in 2017, Flock Security has now raised a complete of $1.2B in complete fairness funding and is backed by Andreessen Horowitz, Y Combinator, Kleiner Perkins, Founders Fund, and SV Angel.
Traders within the spherical:
Trade: Manufacturing, Public Security, Safety, Sensor
Founders: Garrett Langley, Matt Feury
Founding yr: 2017
Location: Atlanta
Complete fairness funding raised: $1.2B

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7. Valar Atomics $340.0M

Spherical: Collection B
Description: El Segundo-based Valar Atomics develops nuclear vitality programs designed to produce industrial-scale energy and produce energy-derived merchandise. Based by Isaiah Taylor in 2023, Valar Atomics has now raised a complete of $464M in complete fairness funding and is backed by Alumni Ventures, Riot Ventures, Opposite, AlleyCorp, and Initialized Capital.
Traders within the spherical: Palmer Luckey, Shyam Sankar
Trade: Power, Nuclear, Oil and Fuel, Energy Grid
Founders: Isaiah Taylor
Founding yr: 2023
Location: El Segundo
Complete fairness funding raised: $464.0M

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6. SiFive $400.0M

Spherical: Collection G
Description: San Mateo-based SiFive is a semiconductor firm that delivers scalable processor core IP options. Based by Andrew Waterman, Krste Asanovic, and Yunsup Lee in 2015, SiFive has now raised a complete of $765.5M in complete fairness funding and is backed by NVIDIA, Coatue, Apollo, Spark Capital, and Point72.
Traders within the spherical: Apollo, Atreides Administration, NVIDIA, Point72, Prosperity7 Ventures, Sutter Hill Ventures, T. Rowe Worth
Trade: Electronics, Manufacturing, Semiconductor, Software program
Founders: Andrew Waterman, Krste Asanovic, Yunsup Lee
Founding yr: 2015
Location: San Mateo
Complete fairness funding raised: $765.5M

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5. Vulcan Components $430.7M

Spherical: Enterprise
Description: Cambridge-based Vulcan Components is a producer of rare-earth magnets utilized in vital protection and industrial functions. Based by John Maslin and Piotr Kulik in 2023, Vulcan Components has now raised a complete of $500.9M in complete fairness funding and is backed by FJ Labs, nvp capital, Washington Harbour Companions, Ibex Traders, and 1789 Capital.
Traders within the spherical:
Trade: Aerospace, Industrial Manufacturing, Manufacturing, Nationwide Safety
Founders: John Maslin, Piotr Kulik
Founding yr: 2023
Location: Cambridge
Complete fairness funding raised: $500.9M

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4. VAST Knowledge $500.0M

Spherical: Collection F
Description: New York-based VAST Knowledge presents an AI Working System that integrates storage, database, and compute engine capabilities right into a single software program platform. Based by Alon Horev, Jeff Denworth, Renen Hallak, and Shachar Fienblit in 2016, VAST Knowledge has now raised a complete of $1.4B in complete fairness funding and is backed by Norwest, NVIDIA, Basic Atlantic, New Enterprise Associates, and Bond.
Traders within the spherical: Entry Industries, Drive Capital, Constancy, NVIDIA
Trade: AI Infrastructure, Synthetic Intelligence (AI), Database, Software program
Founders: Alon Horev, Jeff Denworth, Renen Hallak, Shachar Fienblit
Founding yr: 2016
Location: New York
Complete fairness funding raised: $1.4B

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3. True Anomaly $600.0M

Spherical: Collection D
Description: Centennial-based True Anomaly develops area safety applied sciences, together with spacecraft, software program platforms, and mission programs for orbital operations. Based by Even Rogers, Kyle Zakrzewski, and Tom Nichols in 2022, True Anomaly has now raised a complete of $1B in complete fairness funding and is backed by Accel, Menlo Ventures, Eclipse, Paradigm, and 645 Ventures.
Traders within the spherical: 645 Ventures, Accel, ACME Capital, Atreides Administration, Eclipse, G Squared, Menlo Ventures, Meritech Capital Companions, Narya Capital, Paradigm, Riot Ventures, House.VC, The Personal Shares Fund, VanEck
Trade: Aerospace, Synthetic Intelligence (AI), Manufacturing, Navy, Nationwide Safety
Founders: Even Rogers, Kyle Zakrzewski, Tom Nichols
Founding yr: 2022
Location: Centennial
Complete fairness funding raised: $1.0B

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2. Slate Auto $650.0M

Spherical: Collection C
Description: Troy-based Slate Auto is an electrical car firm creating customizable modular electrical pickup vehicles. Based by Jeffrey Wilke, Miles Arnone, and William Barker in 2022, Slate Auto has now raised a complete of $761M in complete fairness funding and is backed by Basic Catalyst, Slauson & Co., Bezos Expeditions, TWG World, and Thomas Tull.
Traders within the spherical: TWG World
Trade: Automotive, Electrical Automobile, Manufacturing
Founders: Jeffrey Wilke, Miles Arnone, William Barker
Founding yr: 2022
Location: Troy
Complete fairness funding raised: $761.0M

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1. Undertaking Prometheus $10.0B

Spherical: Enterprise
Description: San Francisco-based Undertaking Prometheus is an artificial-intelligence firm that builds programs for the bodily economic system. Based by Jeff Bezos and Vikram Bajaj in 2025, Undertaking Prometheus has now raised a complete of $16.2B in complete fairness funding and is backed by BlackRock, ARCH Enterprise Companions, DST World, JPMorgan Chase & Co., and Jeff Bezos.
Traders within the spherical: ARCH Enterprise Companions, BlackRock, DST World, JPMorgan Chase & Co.
Trade: Synthetic Intelligence (AI), Foundational AI, Data Know-how, Machine Studying
Founders: Jeff Bezos, Vikram Bajaj
Founding yr: 2025
Location: San Francisco
Complete fairness funding raised: $16.2B

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