Steven M. Mankoff
General Partner @ TDF Ventures
San Francisco, United States
Steven M. Mankoff is a Series A investor at TDF Ventures in San Francisco focused on Apps and SaaS. Steve is a General Partner at TDF Ventures, an early stage VC firm focused on telecom, media, technology and software. Our Partners all have extensive operating backgrounds in these sectors. We also have a permanent base of capital that allows us to be long term investors. The majority of our investments are Series A stage and we currently manage$150M. We are located in Washington DC and San Francisco, CA and focus on companies headquartered in the USA.
- Total investments:
- 1
- Last investment:
- Lead investor:
- 100%
Last updated:
For AI agents: llms.txt
Industries Steven M. Mankoff invests in
Stages Steven M. Mankoff invests in
Countries Steven M. Mankoff invests in
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Investment Focus
Industry
- Apps 1 (100%)
- SaaS 1 (100%)
- Mobile 1 (100%)
- Big Data 1 (100%)
- Software 1 (100%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Stellar Loyalty is the first application provider to deliver breakthrough cloud-based, big data customer loyalty, and engagement solutions. The company's mission is to bring delight and value to every consumer experience by enabling brands to instantly recognize, engage, and reward their loyal customers across the network of digital, physical,and human interactions. Founded in 2014 and funded by InterWest Partners and TDF Ventures, Stellar Loyalty is privately held with offices in Foster City, California, Dublin, Ireland, and Manila, Philippines. | $4M / Series A / Feb 09, 2016 |
Co-Investors
About TDF Ventures
TDF Ventures is an early stage venture capital firm with offices in Washington DC and Silicon Valley. We focus on startups that serve enterprise markets within infrastructure, software, and services (IaaS, SaaS, XaaS). We invest from a $200M permanent pool of capital and are currently investing out of Fund V.
TDF Ventures Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Jim Pastoriza
General Partner
|
|||
Matthew Bressler
Principal
|
|||
Steven M. Mankoff
General Partner
|
|||
|
Steven M. Mankoff
General Partner
|
|||
Mark Floyd
Partner
|
Access 48,091 investors
822 industries, 177 countries. Updated daily. Emails and phones included.
Browse database — It's Free!
Find investors for your startup
Search 48,091 investors by industry and country. Emails and phones included.
Similar Investors
Similar stage
Recommended lists
FAQ
What does Steven M. Mankoff invest in?
Steven M. Mankoff invests primarily in Apps, SaaS and Mobile startups, most often at Series A stage. Most of the 1 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Steven M. Mankoff?
Public channels for Steven M. Mankoff include LinkedIn and X (Twitter). For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Steven M. Mankoff last invest?
The most recent investment recorded for Steven M. Mankoff closed in Feb 2016. Shizune tracks 1 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
Contact your first 100 investors today
Find who invests in your industry, stage, and country. Download investor list with emails in 5 minutes.
Find investors — It's Free!
Continue with Google
Continue with LinkedIn
