Company president and scientific instrumentation developer demonstrated extraordinary ability through peer review work, scholarly articles, leading roles with distinguished company, and original marine geology contributions. AAO sustained appeal finding sustained acclaim at very top of field.

Horse breeding business petitioned for stallion manager as O-1A extraordinary ability. Petitioner claimed seven criteria but AAO found only one met. Comparable evidence for awards criterion rejected because petitioner failed to show criterion does not apply to occupation. Appeal dismissed.

Orthopedic surgeon specializing in spinal surgery claimed extraordinary ability. Met two of six claimed criteria: judging and scholarly articles. AAO dismissed, finding membership and published material criteria unmet. Three similar Chinese articles published nearly simultaneously raised questions about authenticity and common origin. Insufficient evidence of sustained national acclaim; did not demonstrate place at field's very top.

Investment firm petitions for O-1A classification for external managers evaluation specialist. Petitioner failed to submit required advisory opinion and satisfied only two of eight evidentiary criteria. Missing published material documentation and failing to establish three alternate criteria, petition dismissed.