Soluna Holdings, Inc — Director's Dealing 2007

May 17, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MECHANICAL TECHNOLOGY INC (MKTY)
CIK: 0000064463
Period of Report: 2007-05-15

Reporting Person: ROBB WALTER L (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-05-15	Common Stock	P	14736	$1.30	Acquired	294783.00	Direct
2007-05-16	Common Stock	P	55217	$1.27	Acquired	350000.00	Direct