Whistle

San Francisco, United States Founded: 2012 • Age: 14 yrs Acquired By Tractive
Private label brand of tracking devices for dogs
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About Whistle

Whistle is a company based in San Francisco (United States) founded in 2012 was acquired by Tractive in July 2025.. Whistle has raised $21 million across 2 funding rounds from investors including Qualcomm, Tractive and Mars. Whistle has completed 1 acquisition, including PetTracker. Whistle offers products and services including Whistle Switch, Go Explore 2.0, and Health 2.0. Whistle operates in a competitive market with competitors including Fi, Wagz, Invisible Fence, Pawscout and Felcana, among others.

  • Headquarter San Francisco, United States
  • Sectors
    Consumer
    Technology
  • Email
    ***********
  • Phone
    *********
  • Website
    *********
  • Social
    *********
  • Legal Name Antech Diagnostics, Inc.
Operational Areas
Consumer → Baby, Parenting & Pet Care
Technology → Extended, Virtual & Augmented Reality
Key Metrics
  • Annual Revenue
  • Net Profit
  • EBITDA
  • Total Equity Funding
    $21 M (USD)

    in 2 rounds

  • Latest Funding Round
    $15 M (USD), Series B

    Jan 30, 2015

  • Investors
    Qualcomm

    & 7 more

  • Employee Count
    Employee Count
  • Investments & Acquisitions
  • Acquired by
    Tractive

    & 1 more

    (Jul 28, 2025)

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Products & Services of Whistle

Whistle offers a comprehensive portfolio of products and services, including Whistle Switch, Go Explore 2.0, and Health 2.0. The company's diverse product and service offerings are designed to meet the evolving needs of its customers, address market demands, and provide comprehensive solutions that drive value creation and customer satisfaction across various segments and use cases.

Primary

Smart collar for location tracking and health monitoring of pets.

Device for monitoring pet activity, wellness, and location updates.

App-based tool for tracking pet behavior and providing health insights.

People of Whistle
Headcount 50-200
Employee Profiles 6
Employee Profiles
People
Colin Payne
Customer Experience Lead
People
André Rohde
Senior Lead Software Engineer
People
Laura Nguyen
Director Of Engineering

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Funding Insights of Whistle

Whistle has successfully raised a total of $21M across 2 strategic funding rounds. The most recent funding activity was a Series B round of $15 million completed in January 2015. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.

  • Total Funding
  • Total Rounds 2
  • Last Round Series B — $15.0M
  • First Round

    (05 Jun 2013)

  • Investors Count 6
Date Amount Transaction Name Valuation Lead Investors Investors
Jan, 2015 Amount Series B - Whistle Valuation NGP Capital , Qualcomm
Jun, 2013 Amount Series A - Whistle Valuation

investors

Date Amount Transaction Name Valuation Lead Investors Investors
Jul, 2021 Amount Post-IPO - Grab Valuation

investors

Feb, 2021 Amount Post-IPO - Grab Valuation

investors

Jan, 2021 Amount Post-IPO - Grab Valuation

investors

Feb, 2021 Amount Post-IPO - Grab Valuation

investors

Investors in Whistle

Whistle has secured backing from 8 investors, including venture fund and institutional investors. Prominent investors backing the company include Qualcomm, Tractive and Mars. This diverse investor base provides strategic capital, industry expertise, and valuable network connections that support the company's growth initiatives, market expansion, and long-term value creation.

All
Venture Fund
Institutional
Investor Description Founded Year Domain Location
Venture capital firm focused on B2B companies
Founded Year Domain Location
Tech-focused seed, early, and mid-stage VC investments are made globally.
Founded Year Domain Location
Tech-focused Early-stage centric VC Firm investing primarily in the US
Founded Year Domain Location
Investor Description Founded Year Domain Location
Single family office of Amitabh Bachchan, founder of Amitabh Bachchan Corporation or AB CORP
Founded Year Domain Location
Startup ecosystems are ignited through strategic investments by Signite Partners.
Founded Year Domain Location
Venture capital is directed toward companies in multiple sectors.
Founded Year Domain Location
Venture capital is invested in cybersecurity, fintech, and AI startups.
Founded Year Domain Location

Investments & Acquisitions by Whistle

Whistle has strategically engaged in corporate development activities, having acquired 1 company. Notable acquisitions include PetTracker. These strategic investments and acquisitions demonstrate the company's commitment to growth through portfolio expansion, market consolidation, technology integration, and strategic partnerships that enhance competitive positioning and drive long-term value creation.

Investments
Company Name Description Domain Location Founded Year Amount
Bionic investment advisor platform
2016
Fine Asian gourmet food is offered by an internet-first restaurant.
2016
Physical e-commerce kiosks are deployed for rural purchases in Indonesia.
2014
Fine Asian gourmet food is offered by an internet-first restaurant.
2016
Acquisitions
Company Name Description Domain Location Founded Year Amount
GPS tracking devices for pets are developed and monitored remotely.
2010
Company Name Description Domain Location Founded Year Amount
OVO is recognized as a smart digital payment application.
2017
Bionic investment advisor platform
2016
Physical e-commerce kiosks are deployed for rural purchases in Indonesia.
2014
Physical e-commerce kiosks are deployed for rural purchases in Indonesia.
2014

Financial Statements - Whistle

Tata Steel revenue growth over time
Tata Steel profit and loss trends over time
Date Amount Transaction Name Valuation Lead Investors Investors
Jul, 2021 Amount Post-IPO - Grab Valuation

investors

Feb, 2021 Amount Post-IPO - Grab Valuation

investors

Jan, 2021 Amount Post-IPO - Grab Valuation

investors

Feb, 2021 Amount Post-IPO - Grab Valuation

investors

Whistle Comparisons

Employees
+
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Competitors of Whistle

Whistle operates in a dynamic and competitive business environment, facing competition from various established players and emerging companies in the market. The competitive landscape includes prominent companies such as Fi, Wagz, Invisible Fence, Pawscout and Felcana, among others. This competitive environment drives innovation, market differentiation, and strategic positioning as companies strive to capture market share and deliver value to their customers. Understanding the competitive dynamics is crucial for assessing market positioning, identifying growth opportunities, and navigating the challenges inherent in a competitive marketplace.

Company Name Domain Founded year HQ Location Description
domain founded_year HQ Location
Smart GPS trackers and activity monitors for dogs are offered.
domain founded_year HQ Location
Smart GPS collars for pets with video streaming are offered.
domain founded_year HQ Location
Electronic pet containment systems and training services are provided.
domain founded_year HQ Location
Private label brand of Bluetooth-enabled pet tags
domain founded_year HQ Location
Internet first brand offering monitoring devices for cats and dogs
Company Name Domain Founded year HQ Location Description
domain founded_year HQ Location
Multiple services are booked via an app-based platform.
domain founded_year HQ Location
On-demand services are booked through an app-based platform.
domain founded_year HQ Location
App based platform offering on demand delivery and ride-hailing services
domain founded_year HQ Location
Operates an on-demand hyperlocal delivery app for food and groceries.

Latest news on Whistle

Frequently Asked Questions about Whistle

When was Whistle founded?

Whistle was founded in 2012 and raised its 1st funding round 1 year after it was founded.

Where is Whistle located?

Whistle is headquartered in San Francisco, United States. It is registered at San Francisco, California, United States.

Is Whistle a funded company?

Whistle is a funded company, having raised a total of $21M across 2 funding rounds to date. The company's 1st funding round was a Series A of $6M, raised on Jun 05, 2013.

What does Whistle do?

Founded in 2012 and based in San Francisco, United States, Whistle operates in the pet technology sector. Private label tracking devices for dogs are produced, featuring a wireless collar attachment and a companion mobile app. Activities such as walking, playing, and resting are monitored, along with fitness, nutrition, health, and location data. Free shipping is provided, and products are covered by a one-year warranty.

Who are the top competitors of Whistle?

Whistle's top competitors include Fi, Invisible Fence and Wagz.

What products or services does Whistle offer?

Whistle offers Whistle Switch, Go Explore 2.0, and Health 2.0.

How many acquisitions has Whistle made?

Whistle has made 1 acquisition, including PetTracker.

Who are Whistle's investors?

Whistle has 8 investors. Key investors include Qualcomm, Tractive, Mars, NGP Capital, and DCM.

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