Key facts
- This page summarizes Tracy Zimmermann's Form 4 filing for Generation Bio Co. (GBIO).
- 3 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 31 Jan 2024, 16:30.
Tracy Zimmermann - 29 Jan 2024 Form 4 Insider Report for Generation Bio Co. (GBIO)
- Reporting relationship
- CHIEF DEVELOPMENT OFFICER
- Issuer ticker
- GBIO
- Reported as of
- 29 Jan 2024
- Net transaction value
- -$2,804
- SEC form
- 4
- Accepted by SEC
- 31 Jan 2024, 16:30:26 UTC
- Prior SEC filing
- 17 Jan 2024
- Source filing
- View source filing
- Reporting owner signature
- /s/ Benjamin Waters, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Tracy Zimmermann filed Form 4 for Generation Bio Co. (GBIO) on 31 Jan 2024.
Change
- Previous filing in this sequence was filed on 17 Jan 2024.
- Current net transaction value: -$2,804.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
GBIO
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +5,021
- Change %
- +11%
- Price
- Shares after
- 50,640
- Date
- 29 Jan 2024
- Ownership
- Direct
- Footnotes
- F1
GBIO
transaction
Common Stock
Tax liability
- Transaction value
- $2,804
- Shares
- -1,476
- Change %
- -2.9%
- Price
- $1.90
- Shares after
- 49,164
- Date
- 29 Jan 2024
- Ownership
- Direct
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
GBIO
transaction
Derivative
Restricted Stock Units
Options Exercise
- Transaction value
- $0
- Shares
- -5,021
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 29 Jan 2024
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 5,021
- Exercise price
- Footnotes
- F1, F2, F3
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Section 16 status
Tracy Zimmermann is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.
Explanation of responses 3 footnotes
Footnote F1
Each restricted stock unit represents the right to receive one share of the company's common stock.
Footnote F2
On January 20, 2023, the reporting person was granted 26,775 restricted stock units. The shares underlying the restricted stock units vest over four years, with 25% of the shares vested on January 15, 2024 and the remaining shares vesting in equal quarterly installments thereafter.
Footnote F3
Reflects the forfeit of 15,060 restricted stock units in connection with the reporting person's separation from the company.