Filing Details

Accession Number:
0001209191-21-038001
Form Type:
4
Zero Holdings:
No
Publication Time:
2021-06-03 20:29:03
Reporting Period:
2021-06-01
Accepted Time:
2021-06-03 20:29:03
SEC Url:
Form 4 Filing
Issuer
Cik Name Symbol Sector (SIC) IRS No
1496323 Igm Biosciences Inc. IGMS Pharmaceutical Preparations (2834) 770349194
Insiders
Cik Name Reported Address Insider Title Director Officer Large Shareholder Other
1787681 Shinyu Daniel Chen C/O Igm Biosciences, Inc.
325 E. Middlefield Road
Mountain View CA 94043
Chief Medical Officer No Yes No No
Reported Non-Derivative Transactions
Sec. Name Acquisiton - Disposition Date Amount Price Remaning Holdings Equity Swap Involved Form Type Code Nature of Ownership Explanation
Common Stock Acquisiton 2021-06-01 1,900 $1.39 118,418 No 4 M Direct
Common Stock Disposition 2021-06-01 959 $79.99 117,459 No 4 F Direct
Common Stock Disposition 2021-06-02 941 $79.15 116,518 No 4 S Direct
Equity Swap Involved Form Type Code Nature of Ownership Explanation
No 4 M Direct
No 4 F Direct
No 4 S Direct
Reported Derivative Transactions
Sec. Name Sec. Type Acquisiton - Disposition Date Amount Price Amount - 2 Price - 2
Common Stock Stock Option (right to buy) Disposition 2021-06-01 1,900 $0.00 1,900 $1.39
Remaning Holdings Exercise Date Expiration Date Equity Swap Involved Transaction Form Type Transaction Code Nature of Ownership
340,240 2028-12-30 No 4 M Direct
Footnotes
  1. The option exercise and sale were effected pursuant to a Rule 10b5-1 trading plan entered into by the Reporting Person.
  2. Represents shares withheld by the Issuer to pay the exercise price and taxes pursuant to the "net exercise" of 1,900 option shares.
  3. The option, originally for 361,090 shares, of which 20,850 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.