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Who

Mark L. Reisenauer

CEO

Company insider

Files Form 4 as: CEO, Assertio Holdings; SVP, Chief Commercial Officer, Micromet.

Every Form 4 they filed

In numbers

Trades disclosed
50
Buys
0
Sells
5
Bought
$0
Sold
$1.5M
Companies
2
Companies where not an officer
0
First trade
1 Oct 2007
Last trade
16 Jun 2026
Last filed
16 Jun 2026

Companies traded

Where they are an officer
Assertio HoldingsDirector, Officer · Biotechnology · last 16 Jun 20260 buys · 0 sells
MicrometOfficer · last 16 Mar 20110 buys · 5 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
101Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
16 Jun 2026filed 16 Jun 2026Assertio HoldingsBiotechnologySEC FORM 4 Code U—3,583 at $0.00filing
16 Jun 2026filed 16 Jun 2026Assertio Holdingsoption or derivative · BiotechnologySEC FORM 4 Code D—33,333 at $0.00filing
16 Jun 2026filed 16 Jun 2026Assertio Holdingsoption or derivative · BiotechnologySEC FORM 4 Code D—5,415filing
16 Jun 2026filed 16 Jun 2026Assertio Holdingsoption or derivativeSEC FORM 4 Code D—33,333 at $0.00filing
16 Jun 2026filed 16 Jun 2026Assertio Holdingsoption or derivativeSEC FORM 4 Code D—5,415filing
16 Jun 2026filed 16 Jun 2026Assertio Holdingsoption or derivativeSEC FORM 4 Code D—66,666filing
16 Jun 2026filed 16 Jun 2026Assertio Holdingsoption or derivativeSEC FORM 4 Code D—26,667filing
16 Jun 2026filed 16 Jun 2026Assertio Holdingsoption or derivative · BiotechnologySEC FORM 4 Code D—66,666filing
16 Jun 2026filed 16 Jun 2026Assertio Holdingsoption or derivative · BiotechnologySEC FORM 4 Code D—26,667filing
16 Jun 2026filed 16 Jun 2026Assertio HoldingsSEC FORM 4 Code U—3,583 at $0.00filing
2 Mar 2026filed 3 Mar 2026Assertio Holdingsoption or derivative · BiotechnologySEC FORM 4 Code A—26,667 at $0.00filing
2 Mar 2026filed 3 Mar 2026Assertio Holdingsoption or derivativeSEC FORM 4 Code A—26,667 at $0.00filing
13 Nov 2025filed 14 Nov 2025Assertio Holdingsoption or derivativeSEC FORM 4 Code A—500,000 at $0.00filing
13 Nov 2025filed 14 Nov 2025Assertio Holdingsoption or derivativeSEC FORM 4 Code A—1,000,000 at $0.00filing
2 Jan 2025filed 3 Jan 2025Assertio Holdingsoption or derivativeSEC FORM 4 Code A—81,225 at $0.00filing
2 Jan 2025filed 3 Jan 2025Assertio HoldingsSEC FORM 4 Code A—53,750 at $0.00filing
16 Mar 2011filed 18 Mar 2011Micrometoption or derivativeSEC FORM 4 Code M—20,150 at $0.00filing
16 Mar 2011filed 18 Mar 2011Micrometoption or derivativeSEC FORM 4 Code M—19,900 at $0.00filing
16 Mar 2011filed 18 Mar 2011MicrometSEC FORM 4 Code M$40K20,150 at $1.98filing
16 Mar 2011filed 18 Mar 2011MicrometSEC FORM 4 Code M$35K19,900 at $1.75filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Not placed5

Buys in green, sells in red, by the company’s sector.

Related people

William McKeeDirector · Director at Assertio Holdings, filing Form 4 there in the last year
Sigurd KirkDirector · Director at Assertio Holdings, filing Form 4 there in the last year
Heather L. MasonDirector · Director at Assertio Holdings, filing Form 4 there in the last year
David Matthew StarkDirector · Director at Assertio Holdings, filing Form 4 there in the last year
Ajay PatelEVP and CFO · EVP and CFO at Assertio Holdings, filing Form 4 there in the last year