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Who

Jaime Vieser

Director

Company insider

Files Form 4 as: Director, Alaunos Therapeutics; Director, Mountain Lake Acquisition.

In numbers

Trades disclosed
33
Buys
3
Sells
1
Bought
$1.0M
Sold
$6,022
Companies
2
Companies where not an officer
2
First trade
4 Mar 2021
Last trade
6 Oct 2026
Last filed
8 Oct 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
TCRT Alaunos TherapeuticsDirector · Biotechnology · last 6 Oct 20262 buys · 1 sell
Mountain Lake AcquisitionDirector · Funds, Shells & SPACs · last 11 Jun 20261 buy · 0 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
6 Oct 2026filed 8 Oct 2026TCRT Alaunos TherapeuticsBiotechnologySEC FORM 4 Code A$17K22,669 at $0.7444filing
23 Jul 2026filed 27 Jul 2026TCRT Alaunos TherapeuticsBiotechnologySEC FORM 4 Code A$17K8,789 at $1.92filing
23 Jul 2026filed 27 Jul 2026TCRT Alaunos TherapeuticsBiotechnologySEC FORM 4 Code A$17K8,789 at $1.92filing
11 Jun 2026filed 15 Jun 2026Mountain Lake AcquisitionFunds, Shells & SPACsSEC FORM 4 Code D—478,010filing
11 Jun 2026filed 15 Jun 2026Mountain Lake Acquisitionoption or derivative · Funds, Shells & SPACsSEC FORM 4 Code M—478,010filing
11 Jun 2026filed 15 Jun 2026Mountain Lake Acquisitionoption or derivativeSEC FORM 4 Code M—478,010filing
11 Jun 2026filed 15 Jun 2026Mountain Lake AcquisitionSEC FORM 4 Code D—478,010filing
1 Jun 2026filed 4 Jun 2026Mountain Lake Acquisitionoption or derivative · Funds, Shells & SPACsSEC FORM 4 Code J—478,010filing
1 Jun 2026filed 4 Jun 2026Mountain Lake Acquisitionoption or derivativeSEC FORM 4 Code J—478,010filing
29 Apr 2026filed 1 May 2026TCRT Alaunos TherapeuticsBiotechnologySEC FORM 4 Code A$17K6,515 at $2.59filing
29 Apr 2026filed 1 May 2026TCRT Alaunos TherapeuticsBiotechnologySEC FORM 4 Code A$17K6,515 at $2.59filing
12 Jan 2026filed 15 Jan 2026TCRT Alaunos TherapeuticsBiotechnologySEC FORM 4 Code A$17K5,839 at $2.89filing
12 Jan 2026filed 15 Jan 2026TCRT Alaunos TherapeuticsBiotechnologySEC FORM 4 Code A$17K5,839 at $2.89filing
21 Nov 2025filed 26 Nov 2025TCRT Alaunos TherapeuticsBiotechnologySEC FORM 4 Code A$17K5,340 at $3.16filing
3 Jul 2025filed 7 Jul 2025TCRT Alaunos Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code A—6,400 at $0.00filing
3 Jul 2025filed 7 Jul 2025TCRT Alaunos TherapeuticsBiotechnologySEC FORM 4 Code A—3,400 at $0.00filing
24 Jun 2025filed 26 Jun 2025TCRT Alaunos Therapeuticsoption or derivative · BiotechnologySEC FORM 4 Code P$1,123250 at $4.49filing
13 Apr 2025filed 15 Apr 2025TCRT Alaunos TherapeuticsBiotechnologySEC FORM 4 Code A—17,465 at $0.00filing
31 Dec 2024filed 3 Jan 2025TCRT Alaunos TherapeuticsBiotechnologySEC FORM 4 Sold$4,3862,182 at $2.01filing
31 Dec 2024filed 3 Jan 2025TCRT Alaunos TherapeuticsBiotechnologySEC FORM 4 Sold$1,636818 at $2.00filing

News

Sectors

Health Care3
Not placed1

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

Related people

Michael Allen JermanDirector · Director at Alaunos Therapeutics, filing Form 4 there in the last year
Robert W. PostmaDirector · Director at Alaunos Therapeutics, filing Form 4 there in the last year
Holger WeisCEO · CEO at Alaunos Therapeutics, filing Form 4 there in the last year
Mountain Lake Acquisition Sponsor LLC10% owner · 10% owner at Mountain Lake Acquisition, filing Form 4 there in the last year
Paul GrinbergDirector · Chief Executive Officer at Mountain Lake Acquisition, filing Form 4 there in the last year