Private company

Donor Sibling Registry

Logo: Photosubmissions 2013042010003847, Non-free logo, via Wikipedia3

US organization serving donors based in Nederland1

The Donor Sibling Registry is a website and non-profit US organization serving donor offspring, sperm donors, egg donors and other donor conceived people. It was founded in September 2000 by a mother-and-son team, Wendy Kramer and Ryan Kramer of Nederland, Colorado.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

2000Founded1
  • HeadquartersNederland1
  • Founded inNederland1
  • Legal form501(c)(3) organization1

The Donor Sibling Registry is a website and non-profit US organization serving donor offspring, sperm donors, egg donors and other donor conceived people. It was founded in September 2000 by a mother-and-son team, Wendy Kramer and Ryan Kramer of Nederland, Colorado.2

The story

The DSR began as a Yahoo! group, which was created in September 2000. It was started by Wendy Kramer and her 10-year-old son Ryan Kramer, who was conceived via an anonymous sperm donor, as a means of communicating with half siblings who were conceived from the same donor. After the first year, the group was home to only 37 members. In October 2002, Wendy created a press release which was sent to local news agencies. The story was picked up by Denver's NBC affiliate, KUSA-TV. Shortly after, a small article about the DSR was written for The Denver Post. This article led to national and international media coverage, giving the DSR enough exposure to grow its member base into the thousands. In 2003 the DSR became a 501(c)3 charity organization and moved from a Yahoo group to its own database website.

From Wikipedia’s article on Donor Sibling Registry, shared under CC BY-SA 4.0.4

Products and brands

The DSR has published dozens of papers in peer-reviewed academic and legal journals.

From Wikipedia’s article on Donor Sibling Registry, shared under CC BY-SA 4.0.4

Timeline

  1. 2000Founded Founded in Nederland1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2
  3. 3
  4. 4