| Accession Number: | 0001209191-21-026000 |
| Date: | 2021-04-05 |
| Issuer: | IGM BIOSCIENCES, INC. (IGMS) |
| Original Submission Date: |
CHEN DANIEL SHINYU
C/O IGM BIOSCIENCES, INC.
325 E. MIDDLEFIELD ROAD
MOUNTAIN VIEW, CA 94043
| Title of Security | Transaction Date | 2a. Deemed Execution Date | Transaction Code | Shares | Acquired or Disposed | Price per share | 5. Amount of Securities Beneficially Owned Following Reported Transaction | 6. Ownership Form Direct or Indirect | Nature of Indirect Ownership |
|---|---|---|---|---|---|---|---|---|---|
| COMMON STOCK | 2021-04-05 | M | 1,900 | a | $1.39 | 118,418 | direct | ||
| COMMON STOCK | 2021-04-05 | F | 678 | d | $83.40 | 117,740 | direct | ||
| COMMON STOCK | 2021-04-06 | S | 1,222 | d | $82.00 | 116,518 | direct |
| Title of Derivative Security | Conversion or Exercise Price of Derivative Security | Transaction Date | Deemed Execution Date | Transaction Code | Number of Derivative Securities Acquired (A) or Disposed of (D) | Date Exercisable | Expiration Date | Title and Amount of Securities Underlying Derivative Security | Price of Derivative Security | Number of derivative Securities Beneficially Owned Following Reported Transaction(s) | Ownership Form: Direct (D) or Indirect (I) | Nature of Indirect Beneficial Ownership |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STOCK OPTION (RIGHT TO BUY) | 1.39 | 2021-04-05 | deemed execution date | M | 1,900 (d) | 2028-12-30 | common stock 1,900 | $1.39 | 343,990 | direct |
| ID | footnote |
|---|---|
| f1 | the option exercise and sale were effected pursuant to a rule 10b5-1 trading plan entered into by the reporting person. |
| f2 | represents shares withheld by the issuer to pay the exercise price and taxes pursuant to the "net exercise" of 1,900 option shares. |
| f3 | the option, originally for 361,090 shares, of which 17,100 shares have been exercised, vested as to 1/4 of the shares on august 1, 2019, and an additional 1/48 of the shares subject to the option shall vest monthly thereafter, subject to the reporting person remaining a service provider through each such date. |
