# Thin Line Capital: portfolio, investments and team > Thin Line Capital is a vc firm based in United States. 3 investments on record, 2 in the last 12 months, latest Oct 2026. Source: https://millionrounds.com/fund/thin-line-capital (Millionrounds; every figure on the page links to its filing or article) United States · [Investor](https://millionrounds.com/investors) # Thin Line Capital Last cheque observed Oct 2026; 3 cheques on record. Email Deploying now New fund $5.0M, Nov 2022 VC firm Seed Series A Cleantech Sustainability Smart Grid Follow Thin Line Capital and see its new cheques in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Ffund%2Fthin-line-capital) Deploying now **100%** of best year **2** **cheques in 12 months**, 3 on record Since the last cheque **1** days **00** hrs **00** min **00** sec Median round **$14M** Cheque size, as they say **$400K – $600K** Rounds led **0 of 3** Pitch Thin Line Capital ## Thin Line Capital highlights - 01 2 cheques in the last 12 months - 02 Mostly Seed and Series A: 100% of its rounds ## What they do > We at Thin Line Capital are entrepreneurs, like you. We have started six climate-tech companies, including two unicorns. From their own website - **Type:** VC firm (from a list, unverified) - **Cheque size:** $400K – $600K as they say - **Stages:** Seed Series A - **Sectors:** Cleantech Sustainability Smart Grid - **Based in:** Pasadena, United States - **Cold pitches:** Not stated ## The record Every round we can evidence, newest first **3 appearances** - **2026** 2 rounds - **Oct** **[Neuron Industries](https://millionrounds.com/company/neuron-industries)** Seed · US · Google News search **$10M** With 5 others - **Aug** **[Reframe Systems](https://millionrounds.com/company/reframe-systems)** US · Ventureburn **$40M** With 12 others - **2025** 1 round - **Oct** **[SenseNet](https://millionrounds.com/company/sensenet)** Series A · US · TechStartups **$14M** With 7 others An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor. ## The team Named by the firm itself, on a filing, its Form ADV or its company registration **1 named** AD **Aaron Dunsmore Fyke** Principal and Founder of the Manager i Filing they signed We also hold **2** people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them. ## What the register says From the firm's own filings with the SEC, which it must file accurately by law **$31M** gross assets of its funds Oct 2026 **Exempt** reporting adviser venture or small private funds - **Legal name:** THIN LINE Capital, LLC - **SEC number:** CRD 304900 ## What they claim to have backed From their own portfolio page (on their website) **8** of 18 we have independently watched raise [Audette](https://millionrounds.com/company/audette)[Logo_TraceAQ-DarkThin](https://millionrounds.com/company/voltaiq)[Operantnetworks](https://millionrounds.com/company/operant-networks)[Othersphere identifies the](https://millionrounds.com/company/othersphere)[Reframe Logo Vertical Dark](https://millionrounds.com/company/reframe-systems)[SenseNet provides ultra-low](https://millionrounds.com/company/sensenet)[Trace Air Quality](https://millionrounds.com/company/trace-aq)[kevala](https://millionrounds.com/company/kevala) DH Logo 3 Logo_Madre_color NUNA Collective Sunairio-Wordmark-Native Wedsite XGS-Logol_RGB_Color divirod-logo-Large logo_main_slim neuron sistinesolar_blue Weaker than a round we watched, stronger than a list somebody sold us. A firm is far less willing to put a company on its own site that it never funded. New fund on file **$5.0M** raised in Nov 2022 From its SEC filing, not a journalist: a firm that has just raised has money to deploy. ## The cheque Seed Series A Median round joined **$14M** the round, not its cheque Led 0 of 3 rounds **0%** - **Said size:** $400K – $600K - **Sole investor:** Never alone - **Last cheque:** Oct 2026 Rounds by stage said on their site - Seed said *1* - Series A said *1* Cheques by month Led Joined Nov 2023 Oct 2026 **Pitching Thin Line Capital?** Put them on your fundraising board with this record on the card, and follow them to hear when they write a new cheque. Add to your CRM *→* ## Recently backed The latest companies Thin Line Capital put money into. [**Reframe Systems** $40M · Aug 2026](https://millionrounds.com/company/reframe-systems) ## Quick answers about Thin Line Capital ### What does Thin Line Capital invest in? Thin Line Capital invests most often at Seed and Series A (100% of the rounds on record), in sectors such as Cleantech, Sustainability and Smart Grid. ### How active is Thin Line Capital? 3 investments on record, 2 of them in the last 12 months. The most recent was in Oct 2026. ### What has Thin Line Capital invested in recently? Its most recent investments on record: Neuron Industries (Seed, Oct 2026), Reframe Systems (Aug 2026) and SenseNet (Series A, Oct 2025). ### How big are Thin Line Capital's cheques? The median round it joins is $14M. It says it writes cheques of $400K to $600K. ### Is Thin Line Capital investing now? Yes: it is actively investing, with 2 investments in the last 12 months. ### What kind of investor is Thin Line Capital? Thin Line Capital is a VC firm based in Pasadena, United States. ### How much does Thin Line Capital manage? About $31M, as gross assets of its private funds (Oct 2026). ### Has Thin Line Capital raised a new fund? Its latest fund filing with the SEC was in Nov 2022, reporting $5.0M raised. ## Raising now? Find the investors who back rounds like yours, and keep every conversation on one fundraising board. Find similar investorsOpen your CRM Built from the rounds we watched, its filings and its own website, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections?slug=thin-line-capital) · [Is this your firm? Claim it](https://millionrounds.com/claim?org=thin-line-capital)