Collegium Pharmaceutical, Inc.
US ˙ NasdaqGS ˙ US19459J1043

SecurityCOLL / Collegium Pharmaceutical, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership833,192 shares
Latest Disclosed Value $ 27,550,723
Dimensional Fund Advisors Lp reports 0.33% increase in ownership of COLL / Collegium Pharmaceutical, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 833,192 shares of Collegium Pharmaceutical, Inc. (US:COLL) valued at $27,553,659 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 830,480 shares of Collegium Pharmaceutical, Inc.. This represents a change in shares of 0.33% during the quarter. The current value of the position is $25,878,944 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 833,192 2,712 0.33 27,551 -28.35 0.0057
2026-02-12 2025-12-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 830,480 -611 -0.07 38,454 32.24 0.0081
2025-11-12 2025-09-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 831,091 -30,100 -3.50 29,078 14.18 0.0062
2025-08-12 2025-06-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 861,191 -47,815 -5.26 25,467 -6.14 0.0059
2025-05-13 2025-03-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 909,006 -66,808 -6.85 27,133 -2.95 0.0067
2025-02-13 2024-12-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 975,814 -72,840 -6.95 27,957 -31.00 0.0067
2024-11-07 2024-09-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 1,048,654 9,630 0.93 40,519 21.11 0.0098
2024-08-09 2024-06-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 1,039,024 19,876 1.95 33,457 -15.43 0.0087
2024-05-10 2024-03-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 1,019,148 -20,070 -1.93 39,563 23.68 0.0107
2024-02-07 2023-12-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 1,039,218 29,529 2.92 31,987 41.74 0.0093
2023-11-09 2023-09-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 1,009,689 27,537 2.80 22,567 6.92 0.0074
2023-08-09 2023-06-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 982,152 25,203 2.63 21,107 -8.06 0.0067
2023-05-12 2023-03-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 956,949 37,546 4.08 22,958 109,223.81 0.0077
2023-02-09 2022-12-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 919,403 69,089 8.13 21 -99.85 0.0063
2022-11-10 2022-09-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 850,314 30,807 3.76 13,621 -6.20 0.0052
2022-08-12 2022-06-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 819,507 -29,510 -3.48 14,521 -15.99 0.0052
2022-05-13 2022-03-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 849,017 50,351 6.30 17,285 15.85 0.0053
2022-02-09 2021-12-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 798,666 42,330 5.60 14,920 -0.07 0.0045
2021-11-12 2021-09-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 756,336 -19,572 -2.52 14,930 -18.61 0.0048
2021-08-12 2021-06-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 775,908 193,468 33.22 18,344 32.55 0.0058
2021-05-14 2021-03-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 582,440 -22,094 -3.65 13,839 14.29 0.0046
2021-03-08 2020-12-31 13F/A-2 COLLEGIUM PHARMACEUTICAL COM 19459J104 604,534 4,266 0.71 12,109 -3.10 0.0044
2021-02-11 2020-12-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 604,534 4,266 12,109 4,373.1272
2020-11-12 2020-09-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 600,268 -5,780 -0.95 12,496 17.83 0.0053
2020-08-13 2020-06-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 606,048 -26,865 -4.24 10,605 2.60 0.0047
2020-05-14 2020-03-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 632,913 20,385 3.33 10,336 -18.00 0.0054
2020-02-14 2019-12-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 612,528 29,037 4.98 12,605 88.19 0.0046
2019-11-12 2019-09-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 583,491 25,873 4.64 6,698 -8.66 0.0026
2019-08-13 2019-06-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 557,618 129,532 30.26 7,333 13.13 0.0028
2019-08-12 2019-03-31 13F/A-2 COLLEGIUM PHARMACEUTICAL COM 19459J104 428,086 255,619 148.21 6,482 118.91 0.0026
2019-05-10 2019-03-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 428,086 255,619 6,482
2019-02-26 2018-12-31 13F/A-1 COLLEGIUM PHARMACEUTICAL COM 19459J104 172,467 156,614 987.91 2,961 1,165.38 0.0013
2019-02-13 2018-12-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 172,467 156,614 2,961
2018-11-13 2018-09-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 15,853 0 0.00 234 -38.10 0.0001
2018-08-10 2018-06-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 15,853 0 0.00 378 -6.67 0.0002
2018-05-11 2018-03-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 15,853 0 0.00 405 38.23 0.0002
2018-02-12 2017-12-31 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 15,853 0 0.00 293 76.51 0.0001
2017-11-13 2017-09-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 15,853 0 0.00 166 -16.16 0.0001
2017-08-11 2017-06-30 13F COLLEGIUM PHARMACEUTICAL COM 19459J104 15,853 15,853 198 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.