Dennis M Lanfear

CIK 1420822 · President & CEO · last filed 2026-06-02

"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

$18.07M

Companies

2

Total Filings

45

Lifetime Open-Market Net

-$17.16M

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
CHRS President & CEO 1,135,200 $1.40 $1.59M -$17.16M 40 2026-06-02
INSM Director 168,404 $97.85 $16.48M $0 5 2010-06-11

Recent Filings · Page 4 of 5

45 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2016-09-22 CHRS Sell (S) −4,060 -$128.9K EDGAR
2016-09-20 CHRS Sell (S) −2,900 -$92.2K EDGAR
2016-05-13 CHRS Grant (A) $0 EDGAR
2015-12-02 CHRS Sell (S) −400 -$12.7K EDGAR
2015-05-26 CHRS Grant (A) $0 EDGAR
2015-04-03 CHRS Grant (A) $0 EDGAR
2015-03-18 CHRS Other (J) +4,303 $0 EDGAR
2015-03-12 CHRS Other (J) +1,631 $0 EDGAR
2014-12-24 CHRS Gift (G) −20,000 $0 EDGAR
2014-11-12 CHRS Mixed +107,875 $0 EDGAR
Showing 3140 of 45
Page 4 of 5
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.