Company: REVB
Filing Date: 2025-05-20
Form Type: S-1
Source: 0001213900-25-045828
Chunk: 208

Company: REVELATION BIOSCIENCES, INC.
Filing Date: 2025-05-20
Form: S-1
Chunk 208
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 of the Company’s equity cannot be granted with an exercise price of less than % of the estimated fair market value
of the common stock on the grant date and such options are not exercisable after five years from the grant date.

As of December 31, 2024,
there were shares available for future grants under the 2021 Plan.

Restricted Stock Units

As of December 31, 2024
and December 31, 2023, the Company has a total of Rollover RSU awards for shares of common stock outstanding, respectively. As
of December 31, 2024, Rollover RSU awards have fully vested but are unissued and no Rollover RSU awards have been forfeited. Each
Rollover RSU award converts to one share of common stock.

Stock Options

The Company has granted stock
options Stock options have a maximum term of or years.

The activity related to stock
options during the year ended December 31, 2024 is summarized as follows:

|                                  |     | Shares |    |     | Weighted- 
 average   
 Exercise  
 Price     |          |     | Weighted-   
 average     
 Remaining   
 Contractual 
 Term        
 (Years)     |     |
|:---------------------------------|:----|:-------|---:|:----|:----------|---------:|:----|:------------|----:|
| Outstanding at December 31, 2023 |     |        | 64 |     | $         | 3,555.83 |     |             |     |
| Granted                          |     |        |  — |     |           |        — |     |             |     |
| Exercised                        |     |        |  — |     |           |        — |     |             |     |
| Expired and forfeited            |     |        |  — |     |           |        — |     |             |     |
| Outstanding at December 31, 2024 |     |        | 64 |     | $         | 3,555.83 |     |             | 5.8 |
| Exercisable at December 31, 2024 |     |        | 64 |     | $         | 3,555.83 |     |             | 5.8 |

For the year ended December 31,
2023, the weighted-average Black-Scholes value per stock option issued during 2023 was $.