Collegium Pharmaceutical, Inc. has 16 Schedule 13D or 13G filings on record since 2025-08-07. 6 holders' latest filing reports 5% or more of common stock, par value $0.001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Janus Henderson Group Plc | 5.8% | 1,825,651 | SCHEDULE 13G, 2026-05-15 | 2026-03-31 |
| Millennium Management LLC | 5.6% | 1,820,330 | SCHEDULE 13G, 2026-08-24 | 2026-08-17 |
| Fuller & Thaler Asset Management, Inc. | 5.03% | 1,632,781 | SCHEDULE 13G, 2026-08-14 | 2026-06-30 |
| Vanguard Capital Management | 5.01% | 1,625,821 | SCHEDULE 13G, 2026-07-31 | 2026-06-30 |
| Invesco Ltd. | 5% | 1,591,909 | SCHEDULE 13G, 2026-05-08 | 2026-03-31 |
| Principal Global Investors | 5% | 1,632,360 | SCHEDULE 13G, 2026-08-05 | 2026-06-30 |
| Rubric Capital Management LP | 4.73% | 1,496,436 | SCHEDULE 13G/A, 2026-02-13 | 2025-12-31 |
| Renaissance Technologies LLC | 4.53% | 1,469,449 | SCHEDULE 13G/A, 2026-05-14 | 2026-01-08 |
| Eventide Asset Management, LLC | 4.5% | 1,424,282 | SCHEDULE 13G/A, 2026-05-15 | 2026-03-31 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-26 | 2026-03-13 |
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-07 | Invesco Ltd. | 4.9% | SCHEDULE 13G/A |
| 2025-08-11 | Principal Global Investors | 4.6% | SCHEDULE 13G/A |
| 2025-08-13 | Renaissance Technologies LLC | 4.82% | SCHEDULE 13G/A |
| 2025-11-13 | Renaissance Technologies LLC | 5.06% | SCHEDULE 13G |
| 2026-02-13 | Rubric Capital Management LP | 4.73% | SCHEDULE 13G/A |
| 2026-02-13 | Eventide Asset Management, LLC | 5.9% | SCHEDULE 13G/A |
| 2026-03-26 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-05-08 | Invesco Ltd. | 5% | SCHEDULE 13G |
| 2026-05-12 | Integrated Core Strategies (US) LLC | 4.7% | SCHEDULE 13G |
| 2026-05-14 | Renaissance Technologies LLC | 4.53% | SCHEDULE 13G/A |
| 2026-05-15 | Janus Henderson Group Plc | 5.8% | SCHEDULE 13G |
| 2026-05-15 | Eventide Asset Management, LLC | 4.5% | SCHEDULE 13G/A |
| 2026-07-31 | Vanguard Capital Management | 5.01% | SCHEDULE 13G |
| 2026-08-05 | Principal Global Investors | 5% | SCHEDULE 13G |
| 2026-08-14 | Fuller & Thaler Asset Management, Inc. | 5.03% | SCHEDULE 13G |
| 2026-08-24 | Millennium Management LLC | 5.6% | SCHEDULE 13G |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.