Anthropic’s AI safety head Mrinank Sharma quits, shares cryptic post—read his full resignation letter here by Live mint | February 10, 2026 8:10 pm | Indian Stocks, Market, News Mrinank Sharma, head of Anthropic’s safeguards research, resigned on 9 February, sharing a cryptic farewell letter on X. His references to poets raised questions among netizens, suggesting his resignation may be linked to AI safety concerns.