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Barry D Quart

CIK 1384243 · Chief Executive Officer · last filed 2026-08-21

Barry D Quart is a Chief Executive Officer who has filed 84 SEC Form 4 insider transactions across 4 companies since 2008. The most recent filing, for KNSA, was dated Aug 21, 2026. Across all open-market trades the lifetime net is −$15.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.0M across reported positions.

"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

$1.01M

Companies

4

Total Filings

84

Lifetime Open-Market Net

-$15.37M

Filer Profile

Reported Address
C/O KINIKSA PHARMACEUTICALS
100 HAYDEN AVE.
LEXINGTON, MA 02421
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
KNSA Director 12,745 $75.08 $956.9K -$3.87M 17 2026-08-21
HRTX Chief Executive Officer 183,208 $0.29 $53.9K -$7.45M 29 2023-01-20
SYNAGEVA BIOPHARMA CORP (GEVA) Delisted Director — — — $0 5 2015-06-23
Ardea Biosciences, Inc./DE (RDEA) Delisted President and CEO 2,500 — — -$4.05M 20 2012-06-20

Recent Filings

84 filings
Insider 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
2026-08-21 KNSA Gift (G) −2,600 $0 EDGAR
2026-06-02 KNSA Mixed +2,799 $0 EDGAR
2026-04-29 KNSA Mixed — -$468.6K EDGAR
2026-04-08 KNSA Mixed — -$246.2K EDGAR
2026-04-06 KNSA Notice (144) −20,000 -$1.00M EDGAR
2026-02-12 KNSA Mixed — -$82.7K EDGAR
2026-02-04 KNSA Mixed — -$474.7K EDGAR
2025-12-17 KNSA Mixed — -$627.0K EDGAR
2025-12-15 KNSA Notice (144) −58,889 -$2.44M EDGAR
2025-06-11 KNSA Mixed — -$728.7K EDGAR
Showing 1–10 of 84
Page 1 of 9
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.