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MNTS Momentus Inc

NASDAQ

$4.18

Momentus Inc (MNTS) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y

Insider signal Bullish Insiders bought more than they sold over this window — uncommon at any size.

Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 0 sellers in the last 90 days

Insiders buying

2

5 transactions

Insiders selling

0

0 transactions

Purchases

$35.1K

5,850 shares

Sales

$0

0 shares

Net activity

$35.1K

purchases less sales

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: May 21, 2026 , by Hadfield Chris .

Recent open-market activity

Date	Insider	Role	Action	Shares	Price	Value	Held after
May 21, 2026	Hadfield Chris	Director	Buy	2,000	$7.19	$14.4K	3,500
May 20, 2026	Kabot Brian	Director	Buy	250	$5.51	$1.4K	4,708
May 19, 2026	Kabot Brian	Director	Buy	250	$5.62	$1.4K	4,458
May 15, 2026	Kabot Brian	Director	Buy	1,850	$5.40	$10.0K	3,295
May 15, 2026	Hadfield Chris	Director	Buy	1,500	$5.32	$8.0K	1,500

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.