How did Pulmatrix's revenue and expenses shift in Q4 2024?

Pulmatrix's financials for Q4 2024 are not currently available. However, we can infer some potential shifts in their revenue and expenses based on the available data.

1. **Revenue Decline**: Pulmatrix experienced a significant revenue decline in Q4 2024 compared to the previous quarter. The company's revenue for Q3 2024 was $366,000, which is a 79% decrease from the revenue in Q3 2023. This decline suggests that Pulmatrix may have faced challenges in generating income during this period.
2. **Cost Savings Measures**: Pulmatrix has been implementing cost-saving measures and winding down activities for certain products, as indicated by the company's statements. These measures could potentially lead to a reduction in operating expenses. However, without specific data on expenses for Q4 2024, it is difficult to ascertain the full extent of these savings.
3. **Gross Margin**: The gross margin of Pulmatrix in Q4 2024 is not currently available. Gross margin is calculated by subtracting the cost of goods sold from revenue. Given the decline in revenue and the company's focus on cost savings, it is possible that the gross margin may have improved due to reduced costs. However, this is purely speculative until the specific figures are disclosed.

In summary, Pulmatrix's revenue declined significantly in Q4 2024, but the company's cost-saving measures might have led to a reduction in expenses, potentially improving the gross margin. For a complete understanding of the company's financial health during this period, the specific figures for revenue and expenses are required.