# InterWest Partners: portfolio, investments and team

> InterWest Partners is a vc firm based in United States. 308 investments on record, latest Nov 2019. Portfolio, stages, co-investors and team.

Source: https://millionrounds.com/fund/interwest-partners (Millionrounds; every figure on the page links to its filing or article)

United States · [Investor](https://millionrounds.com/investors)

# InterWest Partners

Last cheque observed Nov 2019. Silence since then is not evidence of inactivity: our sources miss unannounced rounds.

Email

Quiet VC firm

Pre-seed Seed Series A IT Healthcare

Follow InterWest Partners and see its new cheques in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Ffund%2Finterwest-partners)

Cheques on record

**0%** of best year **0** **cheques in 12 months**, 308 on record

Since the last cheque **2544** days **00** hrs **00** min **00** sec

Median round **$25M** Rounds led **1 of 308** Sole investor **7 rounds** Exits **45 from the portfolio** Mostly in **United States, 100%**

Pitch InterWest Partners

## InterWest Partners highlights

- 01 308 rounds on record
- 02 Mostly Series B and Series C: 43% of its rounds
- 03 Sole investor in 7 rounds, median $5.3M
- 04 45 exits from the portfolio

## What they do

> For over four decades, InterWest Partners has invested in some of the world's most promising early-stage IT and healthcare start-ups. From their own website

- **Type:** VC firm (from a list, unverified)
- **Cheque size:** Not stated
- **Stages:** Pre-seed Seed Series A Series B Growth Pre-IPO
- **Sectors:** IT Healthcare
- **Based in:** Menlo Park, United States
- **Cold pitches:** Not accepted

## The record

Every round we can evidence, newest first **308 appearances**

- **2019** 6 rounds
- **Nov** **[Sera Prognostics](https://millionrounds.com/company/sera-prognostics)** Series D · US · FinSMEs **$36M** With 5 others
- **Nov** **[PMV Pharma](https://millionrounds.com/company/pmv-pharma)** Series C · US · Prweb **$62M** With 7 others
- **Jul** **[NewsCred](https://millionrounds.com/company/newscred)** US · FinSMEs **$20M** *Led*
- **Jun** **[RealityEngines](https://millionrounds.com/company/realityengines)** Seed · US · TechCrunch **$5.3M** With 7 others
- **May** **[Aryaka](https://millionrounds.com/company/aryaka)** Series F · US · FinSMEs **$50M** With 7 others
- **Jan** **[Gynesonics](https://millionrounds.com/company/gynesonics)** US · FinSMEs **$75M** With 7 others
- **2018** 1 round
- **May** **[Avedro](https://millionrounds.com/company/avedro)** US · FinSMEs **$25M** With 2 others
- **2017** 6 rounds
- **Dec** **[Splice Machine](https://millionrounds.com/company/splice-machine)** US · FinSMEs **$9.0M** With 2 others
- **Sept** **[Aria Systems](https://millionrounds.com/company/aria-systems)** US · FinSMEs **$18M** With 2 others
- **Jun** **[Neuronetics](https://millionrounds.com/company/neuronetics)** Series G · US · FinSMEs **$15M** With 11 others
- **Apr** **[Avedro](https://millionrounds.com/company/avedro)** Debt · US · FinSMEs **$42M** With 1 other
- **Jan** **[Integrated Diagnostics](https://millionrounds.com/company/integrated-diagnostics)** Series C · US · FinSMEs **$6.1M** With 1 other
- **Jan** **[Centrexion](https://millionrounds.com/company/centrexion)** Series D · US · FinSMEs **$67M** With 5 others
- **2016** 5 rounds
- **Nov** **[Periscope Data](https://millionrounds.com/company/periscope-data)** US · TechCrunch **$25M** With 36 others
- **Sept** **[C3 IoT](https://millionrounds.com/company/c3-iot)** Series D · US · FinSMEs **$70M** With 4 others
- **Aug** **[Gobiquity](https://millionrounds.com/company/gobiquity)** US · FinSMEs **$6.0M** Sole investor
- **Apr** **[Appboy](https://millionrounds.com/company/appboy)** **$20M** With 13 others
- **Jan** **[Pivot3](https://millionrounds.com/company/pivot3)** **$56M** With 9 others
- **2015** 15 rounds
- **Nov** **[Celladon](https://millionrounds.com/company/celladon)** US **$40M** With 7 others
- **Nov** **[Avedro](https://millionrounds.com/company/avedro)** Series E · US **$32M** With 1 other
- **Sept** **[AdsNative](https://millionrounds.com/company/adsnative)** Series A · US **$8.5M** With 2 others
- **Sept** **[NewsCred](https://millionrounds.com/company/newscred)** Series D **$42M** With 3 others
- **Aug** **[Mobee](https://millionrounds.com/company/mobee)** Series A · US **$5.0M** With 7 others
- **Jul** **[Gynesonics](https://millionrounds.com/company/gynesonics)** Growth · US **$43M** With 5 others
- **Jun** **[Autonomic Technologies](https://millionrounds.com/company/autonomic-technologies)** Series D · US **$43M** With 7 others
- **Jun** **[Joyus](https://millionrounds.com/company/joyus)** Series C · US **$24M** With 4 others
- **May** **[Autonomic Technologies](https://millionrounds.com/company/autonomic-technologies)** Series D · US **$38M** With 4 others
- **Apr** **[The RealReal](https://millionrounds.com/company/the-realreal)** Series D · US **$40M** With 5 others
- **Mar** **[Aryaka Networks](https://millionrounds.com/company/aryaka-networks)** Series C · US **$16M** With 4 others
- **Feb** **[Pivot3](https://millionrounds.com/company/pivot3)** Growth · US **$45M** With 4 others
- **Feb** **[Invuity](https://millionrounds.com/company/invuity)** Growth · US **$20M** With 5 others
- **Jan** **[Welltok](https://millionrounds.com/company/welltok)** Series D · US **$37M** With 6 others
- **Jan** **[Sera Prognostics](https://millionrounds.com/company/sera-prognostics)** Series B · US **$20M** With 4 others
- **2014** 29 rounds
- **Dec** **[InVisage Technologies](https://millionrounds.com/company/invisage-technologies)** Series F · US **$33M** With 5 others
- **Nov** **[Restoration Robotics](https://millionrounds.com/company/restoration-robotics)** Series C · US **$45M** With 3 others
- **Oct** **[Pivot3](https://millionrounds.com/company/pivot3)** Series E · US **$2.0M** With 4 others
- **Oct** **[Stellar Loyalty](https://millionrounds.com/company/stellar-loyalty)** Series A · US **$5.0M** With 2 others
- **Oct** **[Opal Labs](https://millionrounds.com/company/opal-labs)** Series A · US **$8.0M** With 3 others
- **Oct** **[Appboy](https://millionrounds.com/company/appboy)** Series B · US **$15M** With 5 others
- **Aug** **[Pivot3](https://millionrounds.com/company/pivot3)** Series E · US **$12M** 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 **20 named**

BA **Bruce Allan Cleveland** Member of Interwest Management Parners X, LLC and Trustee Cleveland Family Trust Udt 11/25/97 i Form ADV

CJ **Carol Jean Gianos** Member of Interwest Management Partners Viii, LLC and Trustee Gianos Revocable Trust Uad 3/22/99 i Form ADV

CS **Carolyn Shaw Bowsher** Member of Interwest Management Partners Viii, LLC and Trustee the Stephen and Carolyn Bowsher Revocable Trust U/a Dtd 8/ i Form ADV

DL **Deborah Lynn Michel Rosch** Member of Interwest Management Partners Ix, LLC and Trustee Rosch Revocable Trust U/a/D 12/12/2002 i Form ADV

DA **Douglas Allen Pepper** Member of Interwest Management Partners X, LLC & Trustee Pepper Family Trust Dated 6/26/08 i Form ADV

ES **Elizabeth S Sweeney** Member of Interwest Management Partners Ix, LLC and Trustee Sweeney Family Living Trust U/a Dtd 07/27/2006 i Form ADV

GH **Gilbert Harrow Kliman** Member & Elected Managing Director, Interwest Management Partners Viii, LLC & Trustee Gilbert H. Kliman Trust Dated 11/1 i Form ADV

JM **Jobeth Maglathlin Cash** Member of Interwest Management Partners Viii, LLC and Trustee of the H. Berry Cash Bypass Trust Dated 10/2/2017 i Form ADV

KA **Karen Ann Wilson** Chief Financial Officer of Interwest Venture Management Co. i Form ADV

KA **Khaled Asad Nasr** Venture Member of Interwest Management Partners Ix, LLC and Trustee Nasr Family Trust Dated 2/5/2016 i Form ADV

KM **Kimberly Mendelson Pepper** Member of Interwest Management Partners X, LLC and Trustee Pepper Family Trust, Dated 6/26/08 i Form ADV

KA **Kristina A Nasr** Member of Interwest Management Partners Ix, LLC and Trustee Nasr Family Trust Dated 2/5/2016 i Form ADV

MB **Michael Bilstad Sweeney** Member of Interwest Management Partners Ix, LLC and Trustee Sweeney Living Trust U/a Dtd 07/27/2006 i Form ADV

NS **Nina Sofia Kjellson** Member of Interwest Management Partners X, LLC and Trustee Nina Kjellson Living Trust Dtd 10/8/2008 i Form ADV

PR **Paula Renee Oronsky** Member of Interwest Management Partners Ix, LLC and Trustee Oronsky Survivor's Trust Dated 12/15/2000 i Form ADV

PT **Philip Theodore Gianos** Member of Interwest Management Partners Viii, LLC & Trustee of the Gianos Revocable Trust Uad 3/22/99 i Form ADV

RA **Robin Ann Cleveland** Member of Interwest Management Partners X, LLC and Trustee Cleveland Family Trust Udt 11/25/97 i Form ADV

SC **Stephen Charles Bowsher** Member of Interwest Management Partners Viii, LLC and Trustee the Stephen and Carolyn Bowsher Revocable Trust U/a Dtd 8/ i Form ADV

TL **Thomas Lee Rosch** Member of Interwest Management Partners Viii, LLC and Trustee Rosch Revocable Trust U/a/D/ 12/12/2002 i Form ADV

YB **Yasemin B Kliman** Member of Interwest Management Partners X, LLC and Trustee Gyk Trust Dated 12/17/2014 i Form ADV

We also hold **31** 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

**$251M** gross assets of its funds Oct 2026

**Exempt** reporting adviser venture or small private funds

- **Legal name:** Interwest Venture Management Company
- **SEC number:** CRD 160677

Who backs their funds

## 2 LPs on record in InterWest Partners's funds

- **Committed:** $125M
- **Funds:** 3
- **Vintages:** 1997 to 2005

The institutions that put money into its funds, which the firm then invests in companies. Source: the pension's own report, latest Mar 2026.

- [**California State Teachers Retirement System** 2 funds *$115M*](https://millionrounds.com/fund/california-state-teachers-retirement-system) Fund Vintage Committed InterWest Partners IX 2005 $40M InterWest Partners VIII 2000 $75M
- [**Washington State Investment Board** 1 fund *$10M*](https://millionrounds.com/fund/washington-state-investment-board) Fund Vintage Committed InterWest Partners VI 1997 $10M

## What they claim to have backed

From their own portfolio page (on their website)

**10** of 24 we have independently watched raise

[Braze](https://millionrounds.com/company/braze)[C3](https://millionrounds.com/company/c3)[Canva](https://millionrounds.com/company/canva)[Doximity](https://millionrounds.com/company/doximity)[Marketo](https://millionrounds.com/company/marketo)[PMV Pharma](https://millionrounds.com/company/pmv-pharmaceuticals)[Pipedrive](https://millionrounds.com/company/pipedrive)[Tapjoy](https://millionrounds.com/company/tapjoy)[TheRealReal](https://millionrounds.com/company/the-realreal)[Vungle](https://millionrounds.com/company/vungle) Aerie AkarRx Amplimmune Aspreva Ciena Copper Mountain Networks Corixa Cyrix IntraLase Labrys LenSx Lasers Myogen Sratacom TheraSense

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.

## Exits from the portfolio

Companies it backed that were later bought or listed **45 in all**

**[Marketo](https://millionrounds.com/company/marketo)** Bought by [Adobe](https://millionrounds.com/fund/adobe) **$4.8B** Sept 2018

**[InVisage Technologies](https://millionrounds.com/company/invisage-technologies)** Bought by [Apple](https://millionrounds.com/fund/apple) **Undisclosed** Nov 2017

**[NexPlanar](https://millionrounds.com/company/nexplanar)** Bought by Cabot Microelectronics Corporation **Undisclosed** Dec 2015

**[Eiger BioPharmaceuticals](https://millionrounds.com/company/eiger-biopharmaceuticals)** Bought by Celladon **Undisclosed** Nov 2015

**[C9 Inc.](https://millionrounds.com/company/c9-inc)** Bought by InsideSales.com **Undisclosed** May 2015

**[Get Satisfaction](https://millionrounds.com/company/get-satisfaction)** Bought by Sprinklr **Undisclosed** Apr 2015

**[Vendavo](https://millionrounds.com/company/vendavo)** Bought by [Francisco Partners](https://millionrounds.com/fund/francisco-partners) **Undisclosed** Oct 2014

**[Empowered Careers](https://millionrounds.com/company/empowered-careers)** Bought by [Qualcomm Incorporated](https://millionrounds.com/fund/qualcomm-incorporated) **Undisclosed** Jul 2014

**[Concept.io](https://millionrounds.com/company/concept-io)** Bought by [Apple](https://millionrounds.com/fund/apple) **$30M** Jul 2014

**[Flurry](https://millionrounds.com/company/flurry)** Bought by [Yahoo!](https://millionrounds.com/fund/yahoo) **$200M** Jul 2014

**[Nuventix](https://millionrounds.com/company/nuventix)** Bought by Aavid Thermalloy **Undisclosed** Jul 2014

**[Labrys Biologics](https://millionrounds.com/company/labrys-biologics)** Bought by [Teva Pharmaceutical Industries](https://millionrounds.com/fund/teva-pharmaceutical-industries) **$825M** Jun 2014

**[Gojee](https://millionrounds.com/company/gojee)** Bought by XO Group, Inc. **Undisclosed** Mar 2014

**[Aviate](https://millionrounds.com/company/aviate)** Bought by [Yahoo!](https://millionrounds.com/fund/yahoo) **$80M** Jan 2014

**[SignalDemand](https://millionrounds.com/company/signaldemand)** Bought by PROS Holdings **$14M** Dec 2013

**[Amplimmune](https://millionrounds.com/company/amplimmune)** Bought by [AstraZeneca](https://millionrounds.com/fund/astrazeneca) **$500M** Aug 2013

**[Varolii](https://millionrounds.com/company/varolii)** Bought by LifeLock **$43M** Aug 2013

**[Trius Therapeutics](https://millionrounds.com/company/trius-therapeutics)** Bought by [Cubist Pharmaceuticals](https://millionrounds.com/fund/cubist-pharmaceuticals) **$707M** Jul 2013

**[Trius Therapeutics](https://millionrounds.com/company/trius-therapeutics)** Listed **Undisclosed** Jul 2013

**[Marketo](https://millionrounds.com/company/marketo)** Listed **$79M** Apr 2013

The latest 20 here. An exit counts when it came after the firm's first round in the company. From historical deal records.

## The cheque

Pre-seed Seed Series A

Median round joined **$25M** the round, not its cheque Alone, median **$5.3M**

Led 1 of 308 rounds **0%**

- **Sole investor:** 7 rounds
- **Last cheque:** Nov 2019
- **Exits:** 45 from the portfolio

Rounds by stage said on their site

- Series B said *61*
- Series C *53*
- Series A said *52*
- Series D *42*
- Venture *32*
- Seed said *26*
- Pre-seed said *-*

Cheques by year Led Joined

1999 2019

Often in the room with

- [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) 17
- [Versant Ventures](https://millionrounds.com/fund/versant-ventures) 15
- [Intel Capital](https://millionrounds.com/fund/intel-capital) 14
- [Canaan](https://millionrounds.com/fund/canaan-partners) 13
- [CenterPoint Ventures](https://millionrounds.com/fund/centerpoint-ventures) 13
- [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) 13

**Pitching InterWest Partners?** Put them on your fundraising board with this record on the card, and follow them to hear when they write a new cheque.

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## Who they invest alongside

The investors most often in the same rounds as InterWest Partners. A count of rooms they were both in, not a relationship either has claimed.

[**New Enterprise Associates** VC firm **17** rounds together](https://millionrounds.com/fund/new-enterprise-associates)[**Versant Ventures** VC firm **15** rounds together](https://millionrounds.com/fund/versant-ventures)[**Intel Capital** Corporate VC **14** rounds together](https://millionrounds.com/fund/intel-capital)[**Canaan** VC firm **13** rounds together](https://millionrounds.com/fund/canaan-partners)[**CenterPoint Ventures** VC firm **13** rounds together](https://millionrounds.com/fund/centerpoint-ventures)[**Lightspeed Venture Partners** VC firm **13** rounds together](https://millionrounds.com/fund/lightspeed-venture-partners)[**Kleiner Perkins Caufield & Byers** VC firm **12** rounds together](https://millionrounds.com/fund/kleiner-perkins-caufield-and-byers)[**Leapfrog Ventures** VC firm **11** rounds together](https://millionrounds.com/fund/leapfrog-ventures)[**Mayfield Fund** VC firm **11** rounds together](https://millionrounds.com/fund/mayfield)[**Storm Ventures** VC firm **11** rounds together](https://millionrounds.com/fund/storm-ventures)[**DFJ** VC firm **10** rounds together](https://millionrounds.com/fund/dfj)[**Domain Associates** VC firm **10** rounds together](https://millionrounds.com/fund/domain-associates)

## Recently backed

The latest companies InterWest Partners put money into.

[**Sera Prognostics** $36M · Nov 2019](https://millionrounds.com/company/sera-prognostics)[**Aryaka** $50M · May 2019](https://millionrounds.com/company/aryaka)[**Avedro** $25M · May 2018](https://millionrounds.com/company/avedro)[**Splice Machine** $9.0M · Dec 2017](https://millionrounds.com/company/splice-machine)[**Aria Systems** $18M · Sept 2017](https://millionrounds.com/company/aria-systems)[**Neuronetics** $15M · Jun 2017](https://millionrounds.com/company/neuronetics)

## Quick answers about InterWest Partners

### What does InterWest Partners invest in?

InterWest Partners invests most often at Series B and Series C (43% of the rounds on record), in sectors such as IT and Healthcare.

### How active is InterWest Partners?

308 investments on record, 0 of them in the last 12 months, and it led 1. The most recent was in Nov 2019.

### What has InterWest Partners invested in recently?

Its most recent investments on record: Sera Prognostics (Series D, Nov 2019), PMV Pharma (Series C, Nov 2019) and NewsCred (Undisclosed round, Jul 2019).

### How big are InterWest Partners's cheques?

The median round it joins is $25M.

### Does InterWest Partners lead rounds?

Sometimes: it led 1 of its 308 investments on record (0%).

### Where does InterWest Partners invest?

Most of the companies it backs are in the United States (100%).

### Is InterWest Partners investing now?

No investments in the last 12 months; the latest was in Nov 2019.

### Who does InterWest Partners invest alongside?

Most often New Enterprise Associates (17 rounds together), Versant Ventures (15 rounds together) and Intel Capital (14 rounds together).

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