Collegium Pharmaceutical, Inc (COLL) Insider Ownership

Historic Insider Ownership Trends

As of April 22, 2026, the three largest insider holders of COLL are Capital Management Lp Rubric (TenPercentOwner, 3.13Mn shares), Joseph Ciaffoni (President And Ceo, 444.87K shares), Vikram Karnani (President And Ceo, 197.86K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Capital Management Lp Rubric - 0 3,132,743 15 Aug, 2025
Joseph Ciaffoni President And Ceo 444,867 0 14 Feb, 2024
Vikram Karnani President And Ceo 197,864 0 12 Feb, 2026
Colleen Tupper Evp Chief Financial Officer 147,282 0 12 Feb, 2026
Alison B Fleming Evp Chief Technical Officer 143,694 0 12 Aug, 2021
Shirley R. Kuhlmann Evp And General Counsel 108,137 0 06 Mar, 2025
Gino Santini - 95,042 0 19 Aug, 2025
Thomas B Smith Evp And Chief Medical Officer 90,651 0 12 Feb, 2026
David Dieter Evp General Counsel 77,071 0 20 Mar, 2026
Scott Dreyer Evp Chief Commercial Officer 71,770 0 05 Mar, 2026
John A. Fallon - 64,634 0 14 Nov, 2025
Garen G Bohlin - 62,259 0 19 May, 2025
Rita J. Balice-Gordon - 52,629 0 09 Dec, 2025
Gwen A Melincoff - 52,468 0 16 May, 2024
Michael Thomas Heffernan Chairman, President And Ceo 50,328 0 12 Feb, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
17 Mar, 2026 David Dieter Common Stock D 8,840 $35.72 68,231 D F
18 Mar, 2026 David Dieter Common Stock D 13,976 $34.92 77,071 D S
09 Mar, 2026 David Dieter Common Stock D 6,224 $36.65 91,047 D S
03 Mar, 2026 Scott Dreyer Common Stock D 46,417 $40.36 75,329 D S
03 Mar, 2026 Scott Dreyer Common Stock D 3,559 $40.99 71,770 D S
10 Feb, 2026 David Dieter Common Stock A 22,194 $0.00 91,047 D A
10 Feb, 2026 Thomas B Smith Common Stock A 14,268 $0.00 85,312 D A
10 Feb, 2026 Scott Dreyer Common Stock A 19,023 $0.00 122,636 D A
10 Feb, 2026 Vikram Karnani Common Stock A 79,264 $0.00 176,629 D A
10 Feb, 2026 Colleen Tupper Common Stock A 26,421 $0.00 153,088 D A
10 Feb, 2026 Vikram Karnani Common Stock A 32,531 $0.00 209,160 D A
10 Feb, 2026 Thomas B Smith Common Stock A 22,774 $0.00 108,086 D A
10 Feb, 2026 Scott Dreyer Common Stock A 30,702 $0.00 153,338 D A
10 Feb, 2026 David Dieter Common Stock A 9,005 $0.00 100,052 D A
10 Feb, 2026 Colleen Tupper Common Stock A 32,734 $0.00 185,822 D A
10 Feb, 2026 Colleen Tupper Common Stock D 11,861 $46.75 173,961 D F
10 Feb, 2026 Thomas B Smith Common Stock D 5,897 $46.75 102,189 D F
10 Feb, 2026 Vikram Karnani Common Stock D 11,296 $46.75 197,864 D F
10 Feb, 2026 David Dieter Common Stock D 2,781 $46.75 97,271 D F
10 Feb, 2026 Scott Dreyer Common Stock D 9,977 $46.75 143,361 D F