No insider purchase over the last 90 days. The latest, by Bunting Eric, was filed 25 Feb 2025.
QS Energy, Inc.: what insiders have been doing
QS Energy, Inc. is a Energy company. Its directors and officers file their transactions with SEC (Form 4). 1 insider has disclosed 1 filing since 5 November 2025.
Not one of the filings records a straightforward purchase or sale on the market. Grants and option exercises follow pay plans set in advance, so they reveal less about an insider's own view than a purchase made with personal money.
There has been no open-market purchase by an insider of QS Energy, Inc. for at least a year.
Across the 281 companies tracked on its exchange, the median is 8 filings; at 1 filing, this issuer sits below that mark. Over the whole record (from 2006), the tally stands at 6 purchases and no sales. In its latest annual report filed with the SEC (10-K, fiscal year ended 31 December 2025), the company reported net income of -15.3 m USD.
For comparison within the same sector, see the insider buying recorded at Compagnie de l'Odet and Fugro N.V. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.
Since the insiders bought
- -69.0%Entry US$0.29 · Close at T+365 US$0.09
- -54.5%Entry US$0.22 · Close at T+365 US$0.10
- -61.5%Entry US$0.26 · Close at T+365 US$0.10
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
This score ranks the purchase within its own market. A position size is suggested only on the venues of the backtested strategy universe; elsewhere, signals stay on watch. Not investment advice.
Financial data
as of FY 2025FY ended December 2025 · cache
- 150,000 shares@ US$0.100.042% mcap2.1% of flowCommon StockSEC:0001683168-26-006783:0
- 114,581 shares@ US$0.084.5% of flowCommon StockSEC:0001683168-25-004038:0
- 333,333 shares@ US$0.1524.3% of flowCommon StockSEC:0001683168-25-004038:1
- 111,109 shares@ US$0.158.1% of flowCommon StockSEC:0001683168-25-004038:2
- 2,500,000 shares@ US$0.0224.3% of flowCommon StockSEC:0001683168-25-004038:3
- 833,333 shares@ US$0.0624.3% of flowCommon StockSEC:0001683168-25-004038:6
- 220,000 shares@ US$0.077.5% of flowCommon StockSEC:0001683168-25-004038:7
- 6,435,000 sharesCommon StockSEC:0001683168-25-001226:0Canonical exit: 5 Sept 2021 (T+90)
- 220,000 sharesCommon StockSEC:0001683168-25-001222:0Canonical exit: 13 May 2024 (T+90)
- 5,533,333 shares@ US$0.015100.0% of flowCommon StockSEC:0001683168-21-003139:0
- 60,000 shares@ US$0.05100.0% of flowCommon StockSEC:0001683168-20-000863:0
- 260,419 shares@ US$0.084.0% of flowCommon StockSEC:0001683168-19-001784:0
- 275,000 shares@ US$0.052.6% of flowCommon StockSEC:0001683168-19-001784:1
- 733,333 shares@ US$0.1825.1% of flowCommon StockSEC:0001683168-19-001784:2
- 550,000 shares@ US$0.05100.0% of flowCommon StockSEC:0001683168-19-000989:0
- 330,000 shares@ US$0.0559.2% of flowCommon StockSEC:0001683168-19-000970:0
- 165,000 shares@ US$0.0529.9% of flowCommon StockSEC:0001683168-19-000970:1
- 220,000 shares@ US$0.0567.8% of flowCommon StockSEC:0001683168-19-000971:0
- 277,778 shares@ US$0.189.4% of flowCommon StockSEC:0001683168-19-000745:0
- 550,000 shares@ US$0.054.3% of flowCommon StockSEC:0001683168-18-003578:0
- 275,000 shares@ US$0.083.2% of flowCommon StockSEC:0001683168-18-003577:0
- 110,000 shares@ US$0.0513.8% of flowCommon StockSEC:0001683168-18-001449:0
- 225,000 shares@ US$0.082.4% of flowCommon StockSEC:0001683168-18-000921:0
- 550,000 shares@ US$0.085.9% of flowCommon StockSEC:0001683168-18-000921:1
- 179,710 shares@ US$0.071.7% of flowCommon StockSEC:0001683168-18-000322:0
25 of 50 declarations
About QS Energy, Inc.
QS Energy, Inc. (ticker: QSEP) is a U.S.-based energy technology microcap company currently quoted on the OTC market, not NYSE or NASDAQ, according to its latest investor and SEC disclosures. The company is organized in the United States and has long been associated with Santa Barbara, California, while its investor-relations contact information also points to Sherman Oaks, California. QS Energy was incorporated in 1998 as Mandalay Capital Corporation, later renamed Save the World Air, Inc., and adopted its current name, QS Energy, Inc., in 2015. From an equity-research perspective, it is best viewed as an early-stage commercialization story with a long operating history, limited revenue generation, and a continuing reliance on external capital. ([sec.gov](https://www.sec.gov/Archives/edgar/data/1103795/000168316826002551/qsenergy_i10k-123125.htm?utm_source=openai))
The company’s core business is the development and commercialization of energy-efficiency technologies for crude oil transportation, centered on its patented Applied Oil Technology (AOT) platform. Management describes AOT as a solid-state system that uses a high-voltage, low-amp electric field to reduce crude oil viscosity, improve pipeline flow, and potentially lower operating costs and emissions associated with oil transport. QS Energy also references prior work in flow-assurance and friction-reduction technologies aimed at upstream and midstream oil and gas applications. In practical terms, the company is positioned as a specialist in a narrow segment of pipeline optimization rather than as a broad-based oilfield services provider. ([ir.qsenergy.com](https://ir.qsenergy.com/news/press-releases/detail/2064/qs-energy-receives-initial-order-for-multi-year-aot-technology-deployment?utm_source=openai))
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Competitive positioning remains highly niche. QS Energy’s main potential differentiators are its intellectual property portfolio, its patented technology stack, and development partnerships, including licensed IP connected to Temple University. However, the company’s filings also make clear that commercialization remains the central challenge: it has reported no meaningful sustained revenue base, recurring losses, and an ongoing need to raise additional funds to support R&D, product manufacturing, sales and marketing, and public-company compliance costs. That combination makes the stock a high-risk, execution-driven situation. ([sec.gov](https://www.sec.gov/Archives/edgar/data/1103795/000168316826002551/qsenergy_i10k-123125.htm?utm_source=openai))
Recent company updates have emphasized commercial milestones, strategic partnerships, and progress toward broader deployment of AOT. In 2024 and 2025, QS Energy highlighted initial orders, multi-year deployment discussions, distribution arrangements, and manufacturing readiness as it moved toward global commercialization. The company also stated that it is advancing toward full-pipeline deployment and broader international rollout opportunities. For investors in the United States, France, Belgium, or Switzerland, the key takeaway is that QS Energy is a small U.S. energy-tech issuer with real industrial ambitions, but one that still faces material financing, scale-up, and adoption risks before the investment case can be considered durable. ([ir.qsenergy.com](https://ir.qsenergy.com/news/press-releases/detail/2064/qs-energy-receives-initial-order-for-multi-year-aot-technology-deployment?utm_source=openai))
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