| Date | Time | Source | Headline | Symbol | Company |
| 11/17/2017 | 4:07PM | Edgar (US Regulatory) | Termination of Registration of a Class of Security Under Section 12(b) (15-12b) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/14/2017 | 6:01AM | Edgar (US Regulatory) | Notice of Effectiveness (effect) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/09/2017 | 5:02PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 5:13PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 5:13PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 5:12PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 5:11PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 5:09PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 5:09PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 5:08PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 5:07PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 5:07PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 5:06PM | Edgar (US Regulatory) | Statement of Changes in Beneficial Ownership (4) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 11:01AM | Edgar (US Regulatory) | Current Report Filing (8-k) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 10:24AM | Edgar (US Regulatory) | Amended Statement of Ownership: Solicitation (sc 14d9/a) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 9:23AM | Edgar (US Regulatory) | Post-effective Amendment to an S-8 Filing (s-8 Pos) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 9:22AM | Edgar (US Regulatory) | Post-effective Amendment to an S-8 Filing (s-8 Pos) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 9:18AM | Edgar (US Regulatory) | Post-effective Amendment to an S-8 Filing (s-8 Pos) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 9:17AM | Edgar (US Regulatory) | (25-NSE) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 9:15AM | Edgar (US Regulatory) | Post-effective Amendment to Registration Statement (pos Am) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 8:57AM | Edgar (US Regulatory) | Amended Tender Offer Statement by Third Party (sc To-t/a) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/07/2017 | 8:43AM | GlobeNewswire Inc. | Ultragenyx Completes Tender Offer and Acquisition of Dimension Therapeutics | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 11/06/2017 | 4:08PM | Edgar (US Regulatory) | Quarterly Report (10-q) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 10/27/2017 | 5:04PM | Edgar (US Regulatory) | Amended Statement of Ownership: Solicitation (sc 14d9/a) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 10/26/2017 | 8:55AM | Edgar (US Regulatory) | Amended Statement of Ownership: Solicitation (sc 14d9/a) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 10/26/2017 | 8:48AM | Edgar (US Regulatory) | Amended Tender Offer Statement by Third Party (sc To-t/a) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 10/26/2017 | 8:30AM | GlobeNewswire Inc. | Ultragenyx and Dimension Announce Expiration of Hart-Scott-Rodino Waiting Period for Ultragenyx’s Acquisition of Dimension | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 10/23/2017 | 11:15AM | Edgar (US Regulatory) | Amended Tender Offer Statement by Third Party (sc To-t/a) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 10/23/2017 | 11:11AM | Edgar (US Regulatory) | Amended Statement of Ownership: Solicitation (sc 14d9/a) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |
| 10/17/2017 | 10:38AM | Edgar (US Regulatory) | Amended Statement of Ownership: Solicitation (sc 14d9/a) | NASDAQ:DMTX | Dimension Therapeutics, Inc. |