| # | Name | Town/City | S/C/P | Comment | Date |
|---|---|---|---|---|---|
| 501 | Gayle Hathorne | Shawnee | Kansas | N/G | Apr 16, 2016 |
| 502 | Anonymous | Gainesville | Florida | N/G | Apr 16, 2016 |
| 503 | Donald Shaffer | Chandler | AZ | N/G | Apr 16, 2016 |
| 504 | Garrett Slaughenhaupt | Greeley | CO | N/G | Apr 16, 2016 |
| 505 | Anonymous | Lakewood | Colorado | View | Apr 16, 2016 |
| 506 | Valerie Wilhite | Kingshill | Virgin Islands | N/G | Apr 16, 2016 |
| 507 | Jonathan Schreck | Mainz | Germany | View | Apr 16, 2016 |
| 508 | Charlie Losche | Boulder | Colorado | N/G | Apr 16, 2016 |
| 509 | Cortez Tafoya | N/G | N/G | N/G | Apr 17, 2016 |
| 510 | Anonymous | Northglenn | CO | N/G | Apr 17, 2016 |
| 511 | Anonymous | Sion | Switzerland | N/G | Apr 17, 2016 |
| 512 | Katelyn Habernal | Greeley | Colorado | N/G | Apr 17, 2016 |
| 513 | Catherine Jaffre | Lyon | France | N/G | Apr 17, 2016 |
| 514 | Jessamine Collins-Meissner | London | N/G | View | Apr 17, 2016 |
| 515 | Valeria Di Muzio | Rome | Italy | N/G | Apr 17, 2016 |
| 516 | Sara Brown | Uberlingen | Germany | View | Apr 17, 2016 |
| 517 | Anonymous | Salt Lake City | UT | View | Apr 17, 2016 |
| 518 | Anonymous | Syracuse | New York | View | Apr 17, 2016 |
| 519 | Ann Press | Ambler | Pennsylvania | View | Apr 17, 2016 |
| 520 | Anonymous | Ardmore | Pennsylvania | N/G | Apr 17, 2016 |
| 521 | Thomas Didier | Alexandria | Virginia | View | Apr 17, 2016 |
| 522 | Joseph Chaves | Denver | CO | N/G | Apr 17, 2016 |
| 523 | Vitaly Chernetsky | Kansas City | MO | N/G | Apr 17, 2016 |
| 524 | Emily Brownell | Fort Collins | Colorado | N/G | Apr 17, 2016 |
| 525 | Devin Browne | Pittsburgh | PA | View | Apr 17, 2016 |
| 526 | Anonymous | New Haven | CT | N/G | Apr 17, 2016 |
| 527 | Steven Seegel | Greeley | CO | N/G | Apr 17, 2016 |
| 528 | Claire Barta | Greeley | CO | View | Apr 17, 2016 |
| 529 | Grace Schichtel | Greeley | Colorado | N/G | Apr 17, 2016 |
| 530 | Anonymous | Denver | Colorado | N/G | Apr 17, 2016 |
| 531 | Jennifer Crum | Fort Collins | CO | N/G | Apr 17, 2016 |
| 532 | Victor Lane | Woodside | New York | N/G | Apr 17, 2016 |
| 533 | Clark Goering | Greeley | Colorado | N/G | Apr 17, 2016 |
| 534 | Noriko Garofalo | Fort Collins | Colorado | N/G | Apr 17, 2016 |
| 535 | Lynn Hooker | West Lafayette | IN | N/G | Apr 17, 2016 |
| 536 | Kayla Raney | Tübingen | DE | View | Apr 17, 2016 |
| 537 | Barbara Bowman | Grand Junction | Colorado | View | Apr 17, 2016 |
| 538 | Anonymous | Hanover | NH | N/G | Apr 17, 2016 |
| 539 | Anonymous | Littleton | Colorado | View | Apr 17, 2016 |
| 540 | Mark Leiderman | Boulder | Colorado | N/G | Apr 17, 2016 |
| 541 | Ellen Foster | Clarion | PA | View | Apr 17, 2016 |
| 542 | Gina Psaki | Eugene | Oregon | View | Apr 17, 2016 |
| 543 | sophia soler | Athens | Georgia | N/G | Apr 17, 2016 |
| 544 | Nicholas Jones | Greeley | Colorado | View | Apr 17, 2016 |
| 545 | Heather Coleman | Edmonton | Alberta | View | Apr 17, 2016 |
| 546 | Margaret Berg | Thornton | Colorado | View | Apr 17, 2016 |
| 547 | Anonymous | Westminster | Colorado | N/G | Apr 17, 2016 |
| 548 | Martin Knörle | Ravensburg | Germany | N/G | Apr 17, 2016 |
| 549 | Marsha Powers | Evans | Colorado | N/G | Apr 17, 2016 |
| 550 | kathy pershing | evans | colorado | N/G | Apr 17, 2016 |
- S/C/P - State, County or Province
- Dates displayed in the signature list are based on UTC/GMT
- Anonymous signatures signify people who have chosen not to display their names publicly
- A comment in gray indicates that the signer has hidden their comment from public view