| 1.
| GFK Eurisko S.R.L. |
🇮🇹 Milan, Italy |
1 |
| 2.
| GfK Holding Inc. |
🇺🇸 New York, NY, United States |
2 |
| 3.
| GFK Mediamark Research & Intelligence, LLC |
🇺🇸 New York, NY, United States |
1 |
| 4.
| GFK Mediamark Research and Intelligence, LLC |
🇺🇸 New York, NY, United States |
1 |
| 5.
| GFK Telecontrol AG |
🇨🇠, Switzerland |
1 |
| 6.
| GFK Telecontrol AG |
🇨🇠Hergiswil, Switzerland |
2 |
| 7.
| GfK U.S. Holdings, Inc. |
🇺🇸 Wilmington, DE, United States |
1 |
| 8.
| GfK US Holdings, Inc. |
🇺🇸 New York, NY, United States |
1 |