# Contact C-K

## Business Development

If you’re interested in learning more about C-K, or working with us for Media Services (C-K Media), Social and PR, Analytics, Strategic Branding, Creative or E-Comm, please contact:

**Peter Krivkovich**  
Chairman  
Chief Executive Officer

312-616-2333  
[pkrivkov@c-k.com](mailto:pkrivkov@c-k.com)

**Karen Seamen**  
President  
Chief Operating Officer

312-616-2363  
[kseamen@c-k.com](mailto:kseamen@c-k.com)

## Human Resources

**Stefani Lummen**  
Senior Vice President  
Executive Director of Human Resources & Agency Operations

312-616-8295  
[slummen@C-K.com](mailto:slummen@C-K.com)

## Social & PR

**Maria Frost**  
Senior Vice President  
Executive Director of Social & PR

312-616-2346  
[mfrost@c-k.com](mailto:mfrost@c-k.com)

## Suppliers

If you’re interested in learning more about how to work with C-K on behalf of our clients, please contact:

**Media**  
[media.ck@c-k.com](mailto:media.ck@c-k.com)

**Production**  
[production.ck@c-k.com](mailto:production.ck@c-k.com)

**IT**  
[it.ck@c-k.com](mailto:it.ck@c-k.com)

## Our Offices

### Chicago

**Chicago**  
225 N Michigan Avenue  
Chicago,  
IL60601

[map](https://www.google.com/maps?q=Cramer-Krasselt,+225+N+Michigan+Avenue+Chicago,+IL+60601)

312-616-9600

**Brian Nienhaus**  
Executive Vice President  
Managing Director

312-616-2396  
[bnienhaus@c-k.com](mailto:bnienhaus@c-k.com)

### Milwaukee

**Milwaukee**  
117 N Jefferson Suite 204  
Milwaukee,  
WI53202

[map](https://www.google.com/maps?q=117+N+Jefferson+St,+Milwaukee,+WI+53202)

414-227-3500

**Betsy Brown**  
Executive Vice President  
Managing Director

414-227-3522  
[bbrown@c-k.com](mailto:bbrown@c-k.com)