Private company
Generation Bio Co.
Pharmaceutical preparations company.
Last updated Oct 18, 2026.
Overview
Financials
From the company’s reports to the SEC. Every number links to the filing it came from.
Key numbers, fiscal 2024
-715.8%Operating margin3
-661.9%Net margin3
236.9%Revenue growth, 20243
-152.7%Return on equity3
-$91.0MFree cash flow3
Where the money goes
Where each dollar of revenue went, fiscal 2024
- Research and development100¢$61.3M
Out of $19.9M in revenue.3 The company lost money this year.
Financial statements
| Fiscal year | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|
| Revenue | $04 | $04 | $5.9M3 | $19.9M3 | |||
| Research and development | $50.1M5 | $58.5M6 | $85.2M4 | $96.7M3 | $93.6M3 | $61.3M3 | |
| Operating income | -$62.3M5 | -$81.1M6 | -$119.1M4 | -$141.2M3 | -$138.6M3 | -$142.4M3 | |
| Income tax | $05 | $06 | $04 | $03 | $03 | $03 | |
| Net income | -$61.3M5 | -$80.5M6 | -$119.2M4 | -$136.6M3 | -$126.6M3 | -$131.7M3 | |
| Earnings per share | -$12.965 | -$2.956 | -$2.124 | -$2.353 | -$1.963 | -$1.983 | |
| Earnings per share (diluted) | -$12.965 | -$2.956 | -$2.124 | -$2.353 | -$1.963 | -$1.983 |
| Fiscal year | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|
| Cash | $9.5M5 | $15.1M10 | $62.9M5 | $375.1M6 | $93.2M4 | $66.4M3 | $76.3M3 |
| Current assets | $18.2M10 | $267.7M5 | $379.2M6 | $287.0M4 | $272.6M3 | $192.9M3 | |
| Total assets | $42.1M10 | $294.2M5 | $476.8M6 | $376.3M4 | $374.8M3 | $231.2M3 | |
| Current liabilities | $9.2M10 | $11.2M5 | $18.8M6 | $19.1M4 | $39.9M3 | $35.1M3 | |
| Total liabilities | $25.1M10 | $26.1M5 | $95.0M6 | $93.8M4 | $171.6M3 | $145.0M3 | |
| Shareholders’ equity | -$41.6M5 | -$98.6M6 | $268.0M4 | $381.7M3 | $282.5M3 | $203.1M3 | $86.2M3 |
| Shares outstanding | 5.3M shares10 | 46.3M shares5 | 57.0M shares6 | 59.5M shares4 | 66.2M shares3 | 67.0M shares3 |
Leadership
Who has led Generation Bio Co., and when. Pick a name to see everywhere that person has worked.
Chief executive
Chief financial officer
Chief operating officer
2025
- Chief executive officerYalonda Howze Feb 4, 2026 to now11
- Chief executive officerGeoff McDonough Jan 13, 2021 to Feb 4, 202612
- PresidentYalonda Howze Feb 4, 2026 to now11
- PresidentGeoff McDonough Jan 13, 2021 to Feb 4, 202612
- Chief financial officerMatthew Norkunas Jul 24, 2020 to now13
- Chief operating officerAntoinette Paone Feb 11, 2022 to now14
- Chief operating officerMark D. Angelino Jun 11, 2020 to Feb 5, 202115
Board members and other officers (16)
- CHIEF STRATEGY OFFICERPhillip Samayoa Sep 20, 2022 to now16
- Chief Development OfficerDouglas Kerr Jun 11, 2020 to Jan 31, 202417
- OfficerGeoff McDonough Jun 11, 2020 to Jun 18, 202018
- Chief Scientific OfficerMatthew Stanton Jun 11, 2020 to now19
- OfficerStephen J. Dipalma Jun 11, 2020 to Jun 11, 202020
- Chief Development OfficerTracy Zimmermann Nov 10, 2020 to Jan 31, 202421
- Board memberDannielle Appelhans Jul 19, 2022 to now22
- Board memberRonald Harold Wilfred Cooper Mar 3, 2021 to now23
- Board memberAnthony Quinn Jun 11, 2020 to now24
- Board memberCatherine Stehman-Breen Jun 11, 2020 to now25
- Board memberCharles A. Rowland Jr. Jun 11, 2020 to now26
- Board memberGeoff McDonough Jun 11, 2020 to now18
- Board memberGustav Christensen Jun 11, 2020 to now27
- Board memberJason P. Rhodes Jun 11, 2020 to now28
- Board memberJeffrey M. Jonas Jun 11, 2020 to now29
- General counselYalonda Howze Apr 5, 2023 to now30
Timeline
Filings
344 filings to the SEC since October 2021: 4 annual reports, 13 quarterly reports, 42 major events, 207 insider forms, 37 large holders, 41 other. The latest 20:
- May 14, 2026SCHEDULE 13G/A EDGAR
- Feb 19, 202615-12G EDGAR
- Feb 17, 2026SCHEDULE 13G/A EDGAR
- Feb 12, 2026SCHEDULE 13G/A EDGAR
- Feb 11, 2026SCHEDULE 13G/A EDGAR
- Feb 10, 2026EFFECT EDGAR
- Feb 9, 20264 EDGAR
- Feb 9, 20264 OWNERSHIP DOCUMENT EDGAR
- Feb 9, 20264 OWNERSHIP DOCUMENT EDGAR
- Feb 9, 20264 OWNERSHIP DOCUMENT EDGAR
- Feb 9, 20264 OWNERSHIP DOCUMENT EDGAR
- Feb 9, 20264 OWNERSHIP DOCUMENT EDGAR
- Feb 9, 20264 OWNERSHIP DOCUMENT EDGAR
- Feb 9, 20264 OWNERSHIP DOCUMENT EDGAR
- Feb 9, 20264 OWNERSHIP DOCUMENT EDGAR
- Feb 9, 20264 OWNERSHIP DOCUMENT EDGAR
- Feb 9, 20264 OWNERSHIP DOCUMENT EDGAR
- Feb 9, 20264 OWNERSHIP DOCUMENT EDGAR
- Feb 9, 20264 OWNERSHIP DOCUMENT EDGAR
- Feb 9, 2026POS AM EDGAR
The 344 filings since October 2021 can be filtered by form type and year here when JavaScript is on.
Every filing from the last three years, summarized. The full record is on SEC EDGAR.
Insider trades and holders
Large holders
Investors who own more than 5% must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively. 37 such filings since October 2021, the latest 10:
- May 14, 2026SCHEDULE 13G/A
- Feb 17, 2026SCHEDULE 13G/A
- Feb 12, 2026SCHEDULE 13G/A
- Feb 11, 2026SCHEDULE 13G/A
- Feb 6, 2026SCHEDULE 13G
- Nov 14, 2025SCHEDULE 13G/A
- Nov 14, 2025SCHEDULE 13G
- Nov 14, 2025SCHEDULE 13G/A
- Nov 13, 2025SCHEDULE 13G
- Aug 14, 2025SCHEDULE 13G/A
From Forms 4 and Schedules 13D and 13G filed with the SEC.
Sources
The numbers on this page point here. Each one links to the record it came from.
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- 18SEC EDGARGeoff McDonough, Officer
- 19
- 20SEC EDGARStephen J. Dipalma, Officer
- 21
- 22SEC EDGARDannielle Appelhans, Board member
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- 24SEC EDGARAnthony Quinn, Board member
- 25
- 26SEC EDGARCharles A. Rowland Jr., Board member
- 27SEC EDGARGustav Christensen, Board member
- 28SEC EDGARJason P. Rhodes, Board member
- 29SEC EDGARJeffrey M. Jonas, Board member
- 30SEC EDGARYalonda Howze, General counsel