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Technologies addressing environmental challenges and promoting sustainability

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Pressure-Washing Drones, Anthropic's Enterprise Tool Breached on Launch Day, and a Takeaway from the ACA Summit

Apr 23, 2026

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3 min read

Pressure-Washing Drones, Anthropic's Enterprise Tool Breached on Launch Day, and a Takeaway from the ACA Summit

🔥 Angel Deals of the Week | April 23, 2026

Andrew Kazlow

Deals

Estate Sale AI, Why High Oil Prices Rattle Private Markets, and the Startup Loss Deduction Most Angels Miss

Apr 2, 2026

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8 min read

Estate Sale AI, Why High Oil Prices Rattle Private Markets, and the Startup Loss Deduction Most Angels Miss

🔥 Angel Deals of the Week | April 2, 2026

Andrew Kazlow

Deals

Microplastic Filtration, Factory Economics 101 from a16z, and 3 Lessons from 30 Years

Feb 26, 2026

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9 min read

Microplastic Filtration, Factory Economics 101 from a16z, and 3 Lessons from 30 Years

🔥 Angel Deals of the Week | February 26, 2026

Andrew Kazlow

Enterprise

Trade Compliance AI Closes $2.5M Seed, Sequoia's 'Return Free Risk' Warning, and Why It Takes 1,000 Deals to Calibrate Angel Judgment

Nov 20, 2025

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7 min read

Trade Compliance AI Closes $2.5M Seed, Sequoia's 'Return Free Risk' Warning, and Why It Takes 1,000 Deals to Calibrate Angel Judgment

🔥 Angel Deals of the Week | November 20, 2025

Andrew Kazlow

Deals

Oct 30, 2025

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8 min read

IoT Showerheads Save Hotels $20 Per Room, How Being Rude to ChatGPT Boosts Accuracy, and Takeaways from Analysis of 101 Angel Deals

🔥 Angel Deals of the Week | October 30, 2025

Andrew Kazlow

Enterprise

AI-Powered Energy Savings, Data from 2,176 Startups on the SAFE Valuation Cap Spread, and Why Economics Always Win

Sep 25, 2025

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7 min read

AI-Powered Energy Savings, Data from 2,176 Startups on the SAFE Valuation Cap Spread, and Why Economics Always Win

🔥 Angel Deals of the Week | September 25, 2025

Andrew Kazlow

Deals

Bargain Hunting in the Series B Aisle, Lab-Grown Guts, and Fresh Intel from Nearly 70 Angel Groups

Aug 28, 2025

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9 min read

Bargain Hunting in the Series B Aisle, Lab-Grown Guts, and Fresh Intel from Nearly 70 Angel Groups

🔥 Angel Deals of the Week | August 28, 2025

Andrew Kazlow

Enterprise

Aug 21, 2025

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7 min read

Virtual Fan Engagement Secures Follow-on, Enterprise AI Gets a Reality Check, and Why Pro Sports B2B is All Relationships

🔥 Angel Deals of the Week | August 21, 2025

Andrew Kazlow

Deals

Dental lasers, pay-for-quality AI, and why customer rejection is better than an "A"

Jul 31, 2025

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8 min read

Dental lasers, pay-for-quality AI, and why customer rejection is better than an "A"

🔥 Angel Deals of the Week | July 31, 2025

Andrew Kazlow

Deals

Wastewater tech attracts Texas Angels, $2.4B acqui-hire drama, and a counterintuitive tip for rookie angels

Jul 24, 2025

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7 min read

Wastewater tech attracts Texas Angels, $2.4B acqui-hire drama, and a counterintuitive tip for rookie angels

🔥 Angel Deals of the Week | July 24, 2025

Andrew Kazlow

Deals

FDA-cleared women's health tech secures $20M, QSBS reform may sweeten exits, and why highly technical founders break the pitch deck rule

Jun 26, 2025

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7 min read

FDA-cleared women's health tech secures $20M, QSBS reform may sweeten exits, and why highly technical founders break the pitch deck rule

🔥 Angel Deals of the Week | June 26, 2025

Andrew Kazlow

Deals

Even Professional Fund Managers Struggle to Track Their Portfolios, Private-on-Private Acquisitions are Crossing $1B, and Bees get Amino Acid Love

Jun 12, 2025

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8 min read

Even Professional Fund Managers Struggle to Track Their Portfolios, Private-on-Private Acquisitions are Crossing $1B, and Bees get Amino Acid Love

🔥 Angel Deals of the Week | June 12, 2025

Andrew Kazlow

Deals

Lightweight E-Mobility Attracts Cambridge Angels, StubHub IPO Positions VCs for Exit, and Why Provisional Patents Are a Red Flag

Mar 27, 2025

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6 min read

Lightweight E-Mobility Attracts Cambridge Angels, StubHub IPO Positions VCs for Exit, and Why Provisional Patents Are a Red Flag

🔥 Angel Deals of the Week | March 27, 2025

Andrew Kazlow

CleanTech

Pressure-Washing Drones, Anthropic's Enterprise Tool Breached on Launch Day, and a Takeaway from the ACA Summit

Estate Sale AI, Why High Oil Prices Rattle Private Markets, and the Startup Loss Deduction Most Angels Miss

Microplastic Filtration, Factory Economics 101 from a16z, and 3 Lessons from 30 Years

Trade Compliance AI Closes $2.5M Seed, Sequoia's 'Return Free Risk' Warning, and Why It Takes 1,000 Deals to Calibrate Angel Judgment

IoT Showerheads Save Hotels $20 Per Room, How Being Rude to ChatGPT Boosts Accuracy, and Takeaways from Analysis of 101 Angel Deals

AI-Powered Energy Savings, Data from 2,176 Startups on the SAFE Valuation Cap Spread, and Why Economics Always Win

Bargain Hunting in the Series B Aisle, Lab-Grown Guts, and Fresh Intel from Nearly 70 Angel Groups

Virtual Fan Engagement Secures Follow-on, Enterprise AI Gets a Reality Check, and Why Pro Sports B2B is All Relationships

Dental lasers, pay-for-quality AI, and why customer rejection is better than an "A"

Wastewater tech attracts Texas Angels, $2.4B acqui-hire drama, and a counterintuitive tip for rookie angels

FDA-cleared women's health tech secures $20M, QSBS reform may sweeten exits, and why highly technical founders break the pitch deck rule

Even Professional Fund Managers Struggle to Track Their Portfolios, Private-on-Private Acquisitions are Crossing $1B, and Bees get Amino Acid Love

Lightweight E-Mobility Attracts Cambridge Angels, StubHub IPO Positions VCs for Exit, and Why Provisional Patents Are a Red Flag

The Diligent Observer

Angel Network Investment Tracker

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CleanTech

Pressure-Washing Drones, Anthropic's Enterprise Tool Breached on Launch Day, and a Takeaway from the ACA Summit

Estate Sale AI, Why High Oil Prices Rattle Private Markets, and the Startup Loss Deduction Most Angels Miss

Microplastic Filtration, Factory Economics 101 from a16z, and 3 Lessons from 30 Years

Trade Compliance AI Closes $2.5M Seed, Sequoia's 'Return Free Risk' Warning, and Why It Takes 1,000 Deals to Calibrate Angel Judgment

IoT Showerheads Save Hotels $20 Per Room, How Being Rude to ChatGPT Boosts Accuracy, and Takeaways from Analysis of 101 Angel Deals

AI-Powered Energy Savings, Data from 2,176 Startups on the SAFE Valuation Cap Spread, and Why Economics Always Win

Bargain Hunting in the Series B Aisle, Lab-Grown Guts, and Fresh Intel from Nearly 70 Angel Groups

Virtual Fan Engagement Secures Follow-on, Enterprise AI Gets a Reality Check, and Why Pro Sports B2B is All Relationships

Dental lasers, pay-for-quality AI, and why customer rejection is better than an "A"

Wastewater tech attracts Texas Angels, $2.4B acqui-hire drama, and a counterintuitive tip for rookie angels

FDA-cleared women's health tech secures $20M, QSBS reform may sweeten exits, and why highly technical founders break the pitch deck rule

Even Professional Fund Managers Struggle to Track Their Portfolios, Private-on-Private Acquisitions are Crossing $1B, and Bees get Amino Acid Love

Lightweight E-Mobility Attracts Cambridge Angels, StubHub IPO Positions VCs for Exit, and Why Provisional Patents Are a Red Flag

The Diligent Observer

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