Michael Thomas Heffernan
CIK 1448914 · Chairman, President and CEO · last filed 2026-09-17
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
COLL price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
1500 LIBERTY RIDGE DRIVE, SUITE 321
WAYNE, PA 19087
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| TRVI | Director | 6,351 | $13.21 | $83.9K | -$569.2K | 11 | 2026-09-17 |
| ENGNW | Director | — | $0.23 | — | $0 | 2 | 2026-06-17 |
| AVTX | Director | — | $6.79 | — | $0 | 3 | 2026-06-04 |
| BHVN | Director | 15,178 | $14.94 | $226.8K | $0 | 11 | 2025-05-07 |
| COLL | Director | 213,371 | $22.86 | $4.88M | -$15.14M | 17 | 2025-02-12 |
| SYNLOGIC, INC. (SYBX) Delisted | Director | — | $0.69 | — | $0 | 4 | 2023-06-26 |
| AKBA | Director | 48,586 | $0.65 | $31.7K | $0 | 4 | 2021-06-03 |
| COLLEGIUM PHARMACEUTICAL, INC (ESPR) Delisted | Director | 126,623 | $3.18 | $402.7K | -$10.59M | 31 | 2019-08-13 |
| KERYX BIOPHARMACEUTICALS INC (KERX) Delisted | Director | 0 | — | — | $0 | 4 | 2018-12-13 |
| Ocata Therapeutics, Inc. (OCAT) Delisted | Director | 0 | — | — | $0 | 7 | 2016-02-11 |
| CORNERSTONE THERAPEUTICS INC (CRTX) Delisted | Director | — | $1.95 | — | $0 | 7 | 2014-02-04 |
| CORNERSTONE THERAPEUTICS INC (CRTXD) Delisted | Director | — | — | — | $0 | 1 | 2008-11-04 |
Recent Filings · Page 7 of 13
123 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2019-04-17 | COLLEGIUM PHARMACEUTICAL, INC (ESPR) Delisted | Sell (S) | −25,000 | -$377.4K | EDGAR |
| 2019-03-19 | COLLEGIUM PHARMACEUTICAL, INC (ESPR) Delisted | Sell (S) | −25,000 | -$429.3K | EDGAR |
| 2019-02-20 | COLLEGIUM PHARMACEUTICAL, INC (ESPR) Delisted | Sell (S) | −25,000 | -$370.2K | EDGAR |
| 2019-02-11 | COLLEGIUM PHARMACEUTICAL, INC (ESPR) Delisted | Tax (F) | −7,851 | -$113.0K | EDGAR |
| 2019-01-23 | COLLEGIUM PHARMACEUTICAL, INC (ESPR) Delisted | Tax (F) | −787 | -$12.4K | EDGAR |
| 2019-01-17 | COLLEGIUM PHARMACEUTICAL, INC (ESPR) Delisted | Sell (S) | −25,000 | -$389.0K | EDGAR |
| 2018-12-18 | COLLEGIUM PHARMACEUTICAL, INC (ESPR) Delisted | Sell (S) | −25,000 | -$454.5K | EDGAR |
| 2018-12-13 | AKBA | Grant (A) | +7,486 | $0 | EDGAR |
| 2018-12-13 | KERYX BIOPHARMACEUTICALS INC (KERX) Delisted | Disp (D) | −20,000 | $0 | EDGAR |
| 2018-11-16 | COLLEGIUM PHARMACEUTICAL, INC (ESPR) Delisted | Sell (S) | −25,000 | -$415.1K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.