Peter J Barris
CIK 1005561 · last filed 2026-05-26
"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.
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Disclosed Exposure
$21.64B
Companies
60
Total Filings
332
Lifetime Open-Market Net
$288.80M
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
RARX 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
latestOfficerDirector10% owner* stale (no filing in 3 yrs)
Most 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
Reported Address
1119 ST PAUL STREETBALTIMORE, MD 21202
Related Filers
Scott D Sandell — 84 joint filings, latest 2019-11-29
M James Barrett — 74 joint filings, latest 2018-10-24
Groupon, Inc. — 63 joint filings, latest 2022-07-25
Forest Baskett — 50 joint filings, latest 2019-11-29
NEA 12 GP, LLC — 44 joint filings, latest 2019-11-29
NEA Partners 12, Limited Partnership — 44 joint filings, latest 2019-11-29
New Enterprise Associates 12, Limited Partnership — 42 joint filings, latest 2019-11-29
Patrick J Kerins — 40 joint filings, latest 2019-11-29
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses.
View filings on SEC EDGAR.
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| TEM | Director | 121,424 | $72.70 | $8.83M | $0 | 3 | 2026-05-26 |
| SPT | Director | 106,876 | $12.41 | $1.33M | $0 | 11 | 2026-05-21 |
| ZeroFox Holdings, Inc. (ZFOXW) Delisted | Director | 42,918 | $0.09 | $3.9K | $0 | 1 | 2022-12-15 |
| GRPN | Director | 55,175 | $16.96 | $935.8K | -$11.68M | 60 | 2022-07-25 |
| Berkshire Grey, Inc. (BGRYW) Delisted | Director | 156,713 | $0.34 | $53.3K | $0 | 3 | 2022-06-27 |
| NN | Director | 57,282 | $11.70 | $669.9K | $0 | 2 | 2022-06-23 |
| Regulus Therapeutics Inc. (RGLS) Delisted | 10%+ Owner | 205,245 | $8.16 | $1.67M | $1.23M | 2 | 2019-12-26 |
| ARDX | 10%+ Owner | 9,579,210 | $2.99 | $28.59M | $84.96M | 7 | 2019-12-09 |
| MIRM | 10%+ Owner | 4,186,243 | $85.39 | $357.46M | $6.75M | 1 | 2019-07-24 |
| GENOCEA BIOSCIENCES, INC. (GNCA) Delisted | 10%+ Owner | 7,225,676 | $0.00 | $4.3K | $14.69M | 2 | 2019-06-25 |
| TRVI | 10%+ Owner | 4,438,562 | $13.30 | $59.03M | $25.00M | 1 | 2019-05-13 |
| AVEO PHARMACEUTICALS, INC. (AVEO) Delisted | 10%+ Owner | 2,524,386 | $15.00 | $37.87M | $17.12M | 15 | 2019-04-08 |
| TESARO, Inc. (TSRO) Delisted | 10%+ Owner | 0 | — | — | $73.09M | 7 | 2019-01-22 |
| ESTC | 10%+ Owner | 13,864 | $105.60 | $1.46M | $0 | 1 | 2018-10-10 |
| ASND | 10%+ Owner | 82,978,668 | $246.25 | $20.43B | $49.02M | 4 | 2018-09-10 |
| BE | 10%+ Owner | 1,333,333 | $219.51 | $292.69M | $80.00M | 1 | 2018-07-31 |
| CRESCENT BIOPHARMA, INC. (GLYC) Delisted | 10%+ Owner | 49,957 | $15.70 | $784.3K | $7.83M | 3 | 2018-05-11 |
| Surface Oncology, Inc. (SURF) Delisted | 10%+ Owner | 3,179,544 | $1.07 | $3.40M | $2.00M | 1 | 2018-04-23 |
| Oruka Therapeutics, Inc. (ABIO) Delisted | 10%+ Owner | 0 | $28.80 | $0 | -$731.3K | 1 | 2018-02-27 |
| Cascadian Therapeutics, Inc. (CASC) Delisted | 10%+ Owner | 10,882,574 | — | — | $0 | 1 | 2018-02-22 |
| Ra Pharmaceuticals, Inc. (RARX) Delisted | 10%+ Owner | 8,641,684 | — | — | $124.39M | 2 | 2018-02-21 |
| APPN | 10%+ Owner | 1,167 | $49.81 | $58.1K | -$66.07M | 4 | 2018-02-15 |
| SYNLOGIC, INC. (SYBX) Delisted | 10%+ Owner | 281,929 | $0.69 | $194.5K | $0 | 2 | 2018-01-26 |
| SENS | 10%+ Owner | 3,809 | $8.29 | $31.6K | $17.13M | 4 | 2017-12-08 |
| Care.com Inc (CRCM) Delisted | 10%+ Owner | 290 | — | — | $0 | 2 | 2017-11-08 |
| RYTM | 10%+ Owner | 4,359,956 | $92.02 | $401.20M | $9.35M | 1 | 2017-10-10 |
| Mersana Therapeutics, Inc. (MRSN) Delisted | 10%+ Owner | 285,606 | $29.08 | $8.31M | $15.00M | 1 | 2017-07-06 |
| MULESOFT, INC (MULE) Delisted | 10%+ Owner | 2,576,939 | — | — | $0 | 1 | 2017-03-22 |
| Achaogen, Inc. (AKAO) Delisted | 10%+ Owner | 5,215,128 | — | — | $6.75M | 1 | 2016-12-19 |
| XCOM | 10%+ Owner | 971,733 | $29.00 | $28.18M | $4.00M | 4 | 2016-10-13 |
| Roka BioScience, Inc. (ROKA) Delisted | 10%+ Owner | 321,681 | — | — | $4.60M | 3 | 2016-09-30 |
| Epizyme, Inc. (EPZM) Delisted | 10%+ Owner | 5,854,351 | $1.47 | $8.61M | $23.87M | 4 | 2016-01-12 |
| SUPN | 10%+ Owner | 0 | $40.50 | $0 | -$658.7K | 3 | 2015-11-12 |
| Avalo Therapeutics, Inc. (CERC.U) Delisted | 10%+ Owner | 594,245 | — | — | $0 | 1 | 2015-10-20 |
| SYNLOGIC, INC. (MIRN) Delisted | 10%+ Owner | 1,499,166 | — | — | $6.00M | 1 | 2015-10-06 |
| Vitae Pharmaceuticals, Inc (VTAE) Delisted | 10%+ Owner | 3,525,962 | — | — | $32.54M | 2 | 2015-07-02 |
| BOX | 10%+ Owner | 0 | $42.47 | $0 | $0 | 1 | 2015-01-29 |
| BOINGO WIRELESS, INC. (WIFI) Delisted | 10%+ Owner | 3,653,224 | $13.99 | $51.11M | -$15.63M | 5 | 2014-12-18 |
| Tableau Software Inc (DATA) Delisted | 10%+ Owner | 0 | — | — | -$110.31M | 11 | 2014-12-04 |
| CVENT INC (CVT) Delisted | 10%+ Owner | 2,639 | $8.52 | $22.5K | -$46.31M | 5 | 2014-11-28 |
| DERM | 10%+ Owner | 3,433,810 | $4.99 | $17.13M | $1.11M | 1 | 2014-10-08 |
| Viracta Therapeutics, Inc. (SNSS) Delisted | 10%+ Owner | 22,243 | $18.62 | $414.2K | -$6.84M | 2 | 2014-08-29 |
| Loxo Oncology, Inc. (LOXO) Delisted | 10%+ Owner | 1,789,420 | — | — | $3.00M | 1 | 2014-08-06 |
| AUDIENCE INC (ADNC) Delisted | 10%+ Owner | 14,390 | — | — | -$61.5K | 3 | 2013-11-06 |
| XOOM Corp (XOOM) Delisted | 10%+ Owner | 425 | — | — | $0 | 2 | 2013-10-31 |
| Clovis Oncology, Inc. (CLVS) Delisted | 10%+ Owner | 330 | $0.08 | $27 | $17.11M | 2 | 2013-06-05 |
| WDAY | 10%+ Owner | 117 | $205.87 | $24.1K | $0 | 2 | 2013-04-11 |
| Millennial Media Inc. (MM) Delisted | 10%+ Owner | 8,196,614 | — | — | -$21.48M | 2 | 2012-10-30 |
| FUSION-IO, INC. (FIO) Delisted | 10%+ Owner | 0 | — | — | -$44.30M | 14 | 2012-09-06 |
| HYPERION THERAPEUTICS INC (HPTX) Delisted | 10%+ Owner | 2,206,740 | — | — | $5.00M | 1 | 2012-08-02 |
| VG | Director | 262,258 | $13.88 | $3.64M | $0 | 26 | 2012-07-03 |
| INNERWORKINGS INC (WAGE) Delisted | Director | 35,549 | — | — | -$34.9K | 1 | 2012-05-31 |
| ECHO | Director | 5,847 | $91.02 | $532.2K | -$41.0K | 3 | 2012-04-30 |
| INNERWORKINGS INC (INWK) Delisted | Director | 50,549 | — | — | -$12.64M | 12 | 2012-03-30 |
| AMICUS THERAPEUTICS, INC. (FOLD) Delisted | 10%+ Owner | 1,066,029 | $14.49 | $15.45M | $6.40M | 3 | 2012-03-09 |
| TNDM | Director | 2,713 | $19.18 | $52.0K | -$25.80M | 16 | 2011-11-17 |
| Financial Engines, Inc. (FNGN) Delisted | 10%+ Owner | 49,093 | — | — | $0 | 2 | 2010-09-01 |
| INHIBITEX, INC. (INHX) Delisted | 10%+ Owner | 6,898,294 | — | — | $3.00M | 1 | 2009-10-30 |
| DZS INC. (ZHNE) Delisted | 10%+ Owner | 1,788,067 | — | — | $10.44M | 31 | 2008-03-10 |
| GLU MOBILE INC (GLUU) Delisted | 10%+ Owner | 4,794,443 | $12.50 | $59.93M | $0 | 1 | 2008-03-03 |
Recent Filings · Page 11 of 34
332 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2017-03-28 | ASND | Buy (P) | +12,870,000 | $9.01M | EDGAR |
| 2017-03-22 | MULESOFT, INC (MULE) Delisted | Mixed | −320,780 | $0 | EDGAR |
| 2017-03-02 | GRPN | Sell (S) | −187,386 | -$787.4K | EDGAR |
| 2017-03-01 | GRPN | Mixed | −4,724,666 | -$399.9K | EDGAR |
| 2017-02-06 | GRPN | Grant (A) | — | $0 | EDGAR |
| 2016-12-19 | Achaogen, Inc. (AKAO) Delisted | Buy (P) | +500,000 | $6.75M | EDGAR |
| 2016-11-29 | — | Buy (P) | +869,565 | $5.00M | |
| 2016-10-31 | Ra Pharmaceuticals, Inc. (RARX) Delisted | Mixed | +3,490,073 | $4.40M | EDGAR |
| 2016-10-24 | GRPN | Grant (A) | — | $0 | EDGAR |
| 2016-10-13 | XCOM | Buy (P) | — | $0 | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
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.
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.