Nikita Bier is stepping down as head of product at X, according to reporting referenced by multiple sources. One outlet states that Bier leaves the role after roughly one year in the position. Another source indicates the change as a “steps down” event, with no additional public details provided in the brief summaries available here. The information does not specify Bier’s next role, the timing of the departure beyond the general timeframe, or whether an immediate successor has been named. Likewise, the coverage does not outline reasons for the change. The overall picture across the available summaries is that Bier’s tenure as X’s product chief ends after approximately a year, prompting a leadership transition in the product organization. Additional context such as organizational changes, interim leadership, or business impact is not included in the provided source excerpts.