---
title: "September 14–15 Investment News: Temporal $12.55B, Cornelis $205M"
description: "September 14–15 tape: Temporal closed $550 million Series E at $12.55 billion (Lightspeed co-led; ARR dollars still missing). Cornelis announced $205 million with no series letter. WSJ reported OpenAI bought Glass Imaging for more than $300 million — not confirmed. Robocurve $10 million seed is roundup-only."
date: 2026-09-15T00:00:00.000Z
source: https://venturecapitaltracker.com/2026-september-14-15-investment-news-temporal-cornelis-openai
---

# September 14–15 Investment News: Temporal $12.55B, Cornelis $205M

> September 14–15 tape: Temporal closed $550 million Series E at $12.55 billion (Lightspeed co-led; ARR dollars still missing). Cornelis announced $205 million with no series letter. WSJ reported OpenAI bought Glass Imaging for more than $300 million — not confirmed. Robocurve $10 million seed is roundup-only.

September 14–15 is a **reliability-infra** day, not another model-lab print. **[Temporal](/startup/temporal)** closed the August **$12 billion** talks: **$550 million** at **$12.55 billion**. **[Cornelis](/startup/cornelis)** took **$205 million** with **no mark**. **[OpenAI](/startup/openai)** is in a **WSJ** Glass Imaging story that the company has **not** confirmed. Last verified **September 15, 2026**. Window: **14–15 September 2026**. Not a live feed.

## What printed

| Date | Entity | Amount | Type | What is actually known | Follow-up |
| --- | --- | --- | --- | --- | --- |
| Sep 14 | [Temporal](/startup/temporal) | **$550M** at **$12.55B** | Series E | Lightspeed co-led with Wellington, GS Alternatives, Tiger. ARR **dollars missing**. Reuters headline **$12.6B** is rounding. | [Temporal memo](/2026-temporal-550m-series-e-12-55b-lightspeed) |
| Sep 14 | [Cornelis](/startup/cornelis) | **$205M** | Undisclosed | IAG led. **No valuation.** Qualcomm is a collab. | [Cornelis memo](/2026-cornelis-205m-iag-ai-networking) |
| Sep 14 | [Glass Imaging](/startup/glass-imaging) / [OpenAI](/startup/openai) | **>$300M** | Acquisition (reported) | WSJ; **recent months**, not a dated close. OpenAI **silent**. | [Glass Imaging memo](/2026-openai-glass-imaging-300m-reported) |
| Sep 14 | Robocurve | **$10M** | Seed | [Initialized](/fund/initialized-capital) led; [YC](/fund/y-combinator) in. Public-benefit corp. No entity this pass. | RuntimeWire |
| Sep 15 | Exein | **$270M** at **$1.7B** | Growth | Headline led (Tech.eu). Not a deep dive here. | [Tech.eu](https://tech.eu/2026/09/15/exein-raises-270m-at-1-7b-valuation-claims-title-of-europe-s-most-valuable-cybersecurity-scaleup/) |
| Sep 15 | EUCLYD | **>€200M (~$230M)** | Series A | Samsung + Somerset + Scaleup Europe Fund + Innovation Industries (PR Newswire / CNBC). Not a deep dive here. | [PR Newswire](https://www.prnewswire.co.uk/news-releases/euclyd-raises-over-200-million-to-break-the-ai-efficiency-wall-302878043.html) |

## Temporal: August talks, company close

The [Series E memo](/2026-temporal-550m-series-e-12-55b-lightspeed) is the canonical event page. February was **$300 million at $5 billion**. August 18 Bloomberg talks were **about $500 million at ≥$12 billion pre-money**. The company print is **$550 million at $12.55 billion**. Pre vs post was **not labeled**. Named customers include OpenAI — the same OpenAI in the Glass Imaging report, on a **different** fact (usage vs M&A).

## Cornelis: dollars without a cap table

[IAG](https://techcrunch.com/2026/09/14/ai-infrastructure-company-cornelis-raises-205m-to-chip-away-at-nvidias-dominance/) is the only named lead. Do not invent a series letter. Do not add Qualcomm to the round.

## Glass Imaging: report, not a filing

Use the [reported-deal memo](/2026-openai-glass-imaging-300m-reported). Compare confirmation standard with [Hugging Face](/2026-nvidia-hugging-face-12-9b-acquisition) (**agreed**, Huang-named price, 8-K) — not the same.

## Robocurve (roundup)

**$10 million** seed, Sep 14. [Initialized Capital](/fund/initialized-capital) led. Notable Capital, Decasonic, [Y Combinator](/fund/y-combinator), Halcyon Futures participated (RuntimeWire, citing the founder). Delaware public-benefit corp. Open-source Inspect Robots. **No revenue.** **97,000** package installs is a distribution metric. Below the standalone bar.

## Skipped or easy to get wrong

- CodeRabbit **$60 million Series B at $550 million** — **September 16, 2025**. A Sep 15, 2026 aggregator reprinted it. We already cover the **August 2026 $143 million Series C at $1.5 billion**.
- Vinyl Bar **$5.5 million** pre-seed — too small.
- Dangote refinery IPO — not a VC event.
- Temporal **ARR dollars** — still missing.
- Cornelis **valuation** — still missing.
- Glass Imaging **close date** — still missing.

Month hub: [September 2026 VC news](/2026-september-vc-news). Prior index: [Sep 10–12 Motive / Xapien](/2026-september-10-12-investment-news-motive-xapien-physical-ai).

**By:** [Venture Capital Tracker](https://venturecapitaltracker.com/editorial-policy)
**Last updated:** September 15, 2026

**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.