The aerospace manufacturer withdrew its latest offer to a union whose more than 33,000 members went on strike last month, and both sides exchanged blame for the breakdown.

Talks between Boeing and its key manufacturing union broke down, and no negotiations are currently planned as the financially damaging strike heads into a fourth week. The company withdrew its pay offer to around 33,

Boeing stock was falling in premarket trading Wednesday after the company said talks with its striking labor union weren’t going well. Shares of aerospace giant Boeing were down 1.6% at $152.26. S&P 500 and Dow Jones Industrial Average futures were both down 0.