Prime Movers Lab Fund I LP - 07 Sep 2023 Form 4 Insider Report for Momentus Inc. (MNTS)

Role: 10%+ Owner
Signature: /s/ Taylor Frankel, Authorized Person on behalf of the General Partner of each Reporting Person
Issuer symbol: MNTS
Transactions as of: 07 Sep 2023
Net transactions value: -$241,052
Form type: 4
Filing time: 11 Sep 2023, 18:05:46 UTC
Previous filing: 08 Sep 2023
Next filing: 14 Sep 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MNTS	Class A common stock	Sale	$76,450	-11,748	-4.8%	$6.51^*	234,295	07 Sep 2023	Direct	F1, F6, F7
transaction	MNTS	Class A common stock	Sale	$30,299	-4,656	-4.8%	$6.51^*	92,871	07 Sep 2023	Held by Momentus PML SPV 1 LP	F2, F6, F7
transaction	MNTS	Class A common stock	Sale	$5,967	-917	-4.8%	$6.51^*	18,300	07 Sep 2023	Held by Momentus PML SPV 2 LP	F3, F6, F7
transaction	MNTS	Class A common stock	Sale	$14,811	-2,276	-4.8%	$6.51^*	45,387	07 Sep 2023	Held by Momentus PML SPV 3 LP	F4, F6, F7
transaction	MNTS	Class A common stock	Sale	$5,896	-906	-4.8%	$6.51^*	18,080	07 Sep 2023	Held by Prime Movers Growth Fund I LP	F5, F6, F7
transaction	MNTS	Class A common stock	Sale	$36,451	-6,269	-2.7%	$5.81^*	228,026	08 Sep 2023	Direct	F1, F6, F8
transaction	MNTS	Class A common stock	Sale	$14,449	-2,485	-2.7%	$5.81^*	90,386	08 Sep 2023	Held by Momentus PML SPV 1 LP	F2, F6, F8
transaction	MNTS	Class A Common Stock	Sale	$2,849	-490	-2.7%	$5.81^*	17,810	08 Sep 2023	Held by Momentus PML SPV 2 LP	F3, F6, F8
transaction	MNTS	Class A Common Stock	Sale	$7,065	-1,215	-2.7%	$5.81^*	44,172	08 Sep 2023	Held by Momentus PML SPV 3 LP	F4, F6, F8
transaction	MNTS	Class A Common Stock	Sale	$2,814	-484	-2.7%	$5.81^*	17,596	08 Sep 2023	Held by Prime Movers Growth Fund I LP	F5, F6, F8
transaction	MNTS	Class A Common Stock	Sale	$25,208	-4,526	-2%	$5.57^*	223,500	11 Sep 2023	Direct	F1, F6, F9
transaction	MNTS	Class A Common Stock	Sale	$9,992	-1,794	-2%	$5.57^*	88,592	11 Sep 2023	Held by Momentus PML SPV 1 LP	F2, F6, F9
transaction	MNTS	Class A Common Stock	Sale	$1,972	-354	-2%	$5.57^*	17,456	11 Sep 2023	Held by Momentus PML SPV 2 LP	F3, F6, F9
transaction	MNTS	Class A Common Stock	Sale	$4,885	-877	-2%	$5.57^*	43,295	11 Sep 2023	Held by Momentus PML SPV 3 LP	F4, F6, F9
transaction	MNTS	Class A Common Stock	Sale	$1,944	-349	-2%	$5.57^*	17,247	11 Sep 2023	Held by Prime Movers Growth Fund I LP	F5, F6, F9

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.
F2	Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.
F3	Held by Momentus PML SPV 2 LP ("PML SPV 2"). Prime Movers Lab GP II LLC ("PML GP II") is the general partner of PML SPV 2.
F4	Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.
F5	Held by Prime Movers Growth Fund I LP ("PM Growth"). Prime Movers Growth GP I LLC ("PM Growth GP") is the general partner of PM Growth.
F6	Dakin Sloss is the manager of PML GP, PML GP II and PM Growth GP, and may be deemed to beneficially own the securities held by PML, PML SPV 1, PML SPV 2, PML SPV 3 and PM Growth. Mr. Sloss disclaims any beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), except to the extent of its pecuniary interest therein.
F7	The price of $6.5075 per share represents a weighted average of purchase prices ranging from $6.010 to $7.350 per share. The reporting person undertakes to provide upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.
F8	The price of $5.8145 per share represents a weighted average of purchase prices ranging from $5.445 to $6.558 per share. The reporting person undertakes to provide upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.
F9	The price of $5.5697 per share represents a weighted average of purchase prices ranging from $5.271 to $5.81 per share. The reporting person undertakes to provide upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.