---
title: "September 3–4 Investment News: AI Infra, Cyber, Wearables"
description: "Grouped coverage of the week’s standout closes and reported megas — Wonderful $550M, Crusoe $3B+, Gimlet $300M, Upwind $300M, Ultrahuman $70M, Guardio $40M, Huskeys $27M, iPronics $125M — plus Fluidstack and HiBob briefs."
date: 2026-09-04T00:00:00.000Z
tags: ["2026-vc-news", "startup-funding", "venture-capital", "investment-feed", "ai-infrastructure", "cybersecurity"]
source: https://venturecapitaltracker.com/2026-september-3-4-investment-news-ai-infra-cyber
---

# September 3–4 Investment News: AI Infra, Cyber, Wearables

> Grouped coverage of the week’s standout closes and reported megas — Wonderful $550M, Crusoe $3B+, Gimlet $300M, Upwind $300M, Ultrahuman $70M, Guardio $40M, Huskeys $27M, iPronics $125M — plus Fluidstack and HiBob briefs.

**September 3–4, 2026** (with Sep 2 closes still clearing wires) clustered around **AI infrastructure megas**, **cyber security at both cloud and consumer ends**, and a **wearables platform** bet. Deeper analyses live on linked pages.

## Deep dives

| Company | Round | Why it matters | Link |
| --- | --- | --- | --- |
| [Wonderful](/startup/wonderful) | **$550M** Series C @ **$5B** | Insight’s third lead; Salesforce joins; $2B→$5B in six months | [Article](/2026-wonderful-550m-series-c-5b-insight) |
| [Crusoe](/startup/crusoe) | **$3B+** @ **~$30B** (reported) | Atreides/Valor/Mubadala; Jane Street ~$13B offtake catalyst | [Article](/2026-crusoe-3b-30b-valuation-jane-street) |
| [Gimlet Labs](/startup/gimlet-labs) | **$300M** @ **$3B** | a16z lead; Arm + M12; multi-chip inference routing | [Article](/2026-gimlet-labs-300m-3b-a16z) |
| [Upwind](/startup/upwind) | **~$300M** @ **~$3.8B** (reported) | Bessemer/TCV; post–Wiz/Google independent CNAPP | [Article](/2026-upwind-300m-series-c-3-8b) |
| [iPronics](/startup/ipronics) | **$125M** Series B | Maverick/Light Street + NVIDIA optical circuit switching | [Article](/2026-ipronics-125m-series-b-optical-ai) |
| [Ultrahuman](/startup/ultrahuman) | **$70M** @ **$365M** | Qualcomm + Labcorp; ~$140M ARR run rate; ring-as-computer | [Article](/2026-ultrahuman-70m-365m-qualcomm) |
| [Guardio](/startup/guardio) | **$40M** @ **$1.1B** | $150M ARR / 1M payers; Assaf Rappaport joins | [Article](/2026-guardio-40m-1-1b-consumer-cyber) |
| [Huskeys](/startup/huskeys) | **$27M** Series A | Blackstone’s first early cyber lead; NESM category | [Article](/2026-huskeys-27m-series-a-blackstone) |

## Briefs (same window)

### Fluidstack — reported $1.5B at $18B+ (Jane Street)

Forbes reporting summarized by trade wires: neocloud **Fluidstack** closed a **$1.5B** round led by **Jane Street** at an **$18B+** valuation — more than double the **$7.5B** July mark — against a previously disclosed multi-year Anthropic capacity narrative. Treat as **reported** until a primary company release. Same week as Crusoe’s Jane Street offtake story: trading firms are now central to GPU-cloud financing.

### HiBob — $166M led by Salesforce (~$3.2B)

**HiBob** announced a **$166M** investment led by **Salesforce** with Farallon, valuing the HR/people platform near **$3.2B** (up from ~$2.7B in 2023). Company materials emphasize organizational intelligence for AI-relevant workforce context across **5,500+** customers. Fits the same Salesforce strategic-check pattern as Wonderful.

### Also noted (thin / skip for deep dive)

- **Hivebotics** — $6M Series A (Vertex Ventures SEA & India) for Singapore robotics cleaning (Business Times, Sep 4).
- **Sirdab** — $10M Series A (Elm / BECO) for Saudi/GCC logistics infrastructure (Wamda, Sep 3).
- **Atira** — $15M Accel-led seed (Munich) for AI bid-proposal automation (Fortune/Bloomberg river).
- **Diameter Pay** — $10M Series A (CMT Digital / Lightspeed Faction) for USD payment rails (PR Newswire, Sep 3).

## Themes

1. **Neoclouds price like utilities** once offtake is visible (Crusoe, Fluidstack).
2. **Cyber splits**: enterprise CNAPP independents (Upwind) vs. consumer ARR machines (Guardio) vs. edge category creation (Huskeys).
3. **Enterprise AI OS** keeps compounding (Wonderful) while **inference routing** becomes its own mega-round (Gimlet).
4. **Optical + silicon** capital follows GPU scarcity one layer down the stack (iPronics; compare Lyte on perception silicon).

## Fund pages worth opening

- [Insight Partners](/fund/insight-partners) — Wonderful
- [Andreessen Horowitz](/fund/andreessen-horowitz) — Gimlet Labs
- [Bessemer Venture Partners](/fund/bessemer-venture-partners) — Upwind, Wonderful
- [Greylock Partners](/fund/greylock-partners) / [Craft Ventures](/fund/craft-ventures) — Upwind
- [Index Ventures](/fund/index-ventures) — Wonderful

### Sources

See frontmatter `sources` list and each deep-dive article for full citations.

**By:** [Venture Capital Tracker](https://venturecapitaltracker.com/editorial-policy)

**Editorial note:** AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.