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Prime Movers Growth Fund I LP

Disclosed activity across 1 company

Tapewire entity
109451
SEC CIK
0001838981

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Momentus Inc.MNTS · Entity 683410% ownerSeptember 22, 2023September 26, 2023

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class A common stockSEC Table I · non-derivativeDirect77,837 Last balance in matching sequence After 2023-09-25 transaction · row 6 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 1 · 2023-09-22 · Sale · Disposed 13,574 · Balance 109,098

F7: The price of $2.3862 per share represents a weighted average of purchase prices ranging from $2.26 to $2.76 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.

F1: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

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.

Row 6 · 2023-09-25 · Sale · Disposed 31,261 · Balance 77,837

F8: The price of $2.0445 per share represents a weighted average of purchase prices ranging from $1.87 to $2.39 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.

F1: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

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.

Class A common stockSEC Table I · non-derivativeIndirectHeld by Momentus PML SPV 1 LP30,853 Last balance in matching sequence After 2023-09-25 transaction · row 7 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 2 · 2023-09-22 · Sale · Disposed 5,381 · Balance 43,245

F7: The price of $2.3862 per share represents a weighted average of purchase prices ranging from $2.26 to $2.76 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.

F2: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

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.

Row 7 · 2023-09-25 · Sale · Disposed 12,392 · Balance 30,853

F8: The price of $2.0445 per share represents a weighted average of purchase prices ranging from $1.87 to $2.39 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.

F2: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

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.

Class A common stockSEC Table I · non-derivativeIndirectHeld by Momentus PML SPV 2 LP8,520 Reported balance After 2023-09-22 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2023-09-22 · Sale · Disposed 1,060 · Balance 8,520

F7: The price of $2.3862 per share represents a weighted average of purchase prices ranging from $2.26 to $2.76 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.

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.

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.

Class A common stockSEC Table I · non-derivativeIndirectHeld by Momentus PML SPV 3 LP21,133 Reported balance After 2023-09-22 transaction · row 4 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 4 · 2023-09-22 · Sale · Disposed 2,630 · Balance 21,133

F7: The price of $2.3862 per share represents a weighted average of purchase prices ranging from $2.26 to $2.76 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.

F4: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

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.

Class A common stockSEC Table I · non-derivativeIndirectHeld by Prime Movers Growth Fund I LP8,418 Reported balance After 2023-09-22 transaction · row 5 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 5 · 2023-09-22 · Sale · Disposed 1,048 · Balance 8,418

F7: The price of $2.3862 per share represents a weighted average of purchase prices ranging from $2.26 to $2.76 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.

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.

Class A Common StockSEC Table I · non-derivativeIndirectHeld by Momentus PML SPV 2 LP4,734 Last balance in matching sequence After 2023-09-26 transaction · row 13 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 8 · 2023-09-25 · Sale · Disposed 2,442 · Balance 6,078

F8: The price of $2.0445 per share represents a weighted average of purchase prices ranging from $1.87 to $2.39 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.

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.

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.

Row 13 · 2023-09-26 · Sale · Disposed 1,344 · Balance 4,734

F9: The price of $1.9127 per share represents a weighted average of purchase prices ranging from $1.76 to $2.01 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.

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.

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.

Class A Common StockSEC Table I · non-derivativeIndirectHeld by Momentus PML SPV 3 LP11,745 Last balance in matching sequence After 2023-09-26 transaction · row 14 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 9 · 2023-09-25 · Sale · Disposed 6,056 · Balance 15,077

F8: The price of $2.0445 per share represents a weighted average of purchase prices ranging from $1.87 to $2.39 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.

F4: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

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.

Row 14 · 2023-09-26 · Sale · Disposed 3,332 · Balance 11,745

F9: The price of $1.9127 per share represents a weighted average of purchase prices ranging from $1.76 to $2.01 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.

F4: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

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.

Class A Common StockSEC Table I · non-derivativeIndirectHeld by Prime Movers Growth Fund I LP4,679 Last balance in matching sequence After 2023-09-26 transaction · row 15 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 10 · 2023-09-25 · Sale · Disposed 2,412 · Balance 6,006

F8: The price of $2.0445 per share represents a weighted average of purchase prices ranging from $1.87 to $2.39 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.

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.

Row 15 · 2023-09-26 · Sale · Disposed 1,327 · Balance 4,679

F9: The price of $1.9127 per share represents a weighted average of purchase prices ranging from $1.76 to $2.01 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.

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.

Class A Common StockSEC Table I · non-derivativeDirect60,635 Reported balance After 2023-09-26 transaction · row 11 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 11 · 2023-09-26 · Sale · Disposed 17,202 · Balance 60,635

F9: The price of $1.9127 per share represents a weighted average of purchase prices ranging from $1.76 to $2.01 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.

F1: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

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.

Class A Common StockSEC Table I · non-derivativeIndirectHeld by Momentus PML SPV 1 LP24,034 Reported balance After 2023-09-26 transaction · row 12 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 12 · 2023-09-26 · Sale · Disposed 6,819 · Balance 24,034

F9: The price of $1.9127 per share represents a weighted average of purchase prices ranging from $1.76 to $2.01 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.

F2: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

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.

Filing footnotes · ownership attribution and instrument terms

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 $2.3862 per share represents a weighted average of purchase prices ranging from $2.26 to $2.76 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 $2.0445 per share represents a weighted average of purchase prices ranging from $1.87 to $2.39 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 $1.9127 per share represents a weighted average of purchase prices ranging from $1.76 to $2.01 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.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 26, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 1,327 $1.91 $2,538.15
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 15

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Prime Movers Growth Fund I LP

Disclosed balance after: 4,679

F9 · price: The price of $1.9127 per share represents a weighted average of purchase prices ranging from $1.76 to $2.01 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.

F5 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
September 26, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 3,332 $1.91 $6,373.12
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 14

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 3 LP

Disclosed balance after: 11,745

F9 · price: The price of $1.9127 per share represents a weighted average of purchase prices ranging from $1.76 to $2.01 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.

F4 · ownership.nature: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

F6 · ownership.nature: 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.

Read SEC document
September 26, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 1,344 $1.91 $2,570.67
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 13

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 2 LP

Disclosed balance after: 4,734

F9 · price: The price of $1.9127 per share represents a weighted average of purchase prices ranging from $1.76 to $2.01 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.

F3 · ownership.nature: 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.

F6 · ownership.nature: 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.

Read SEC document
September 26, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 6,819 $1.91 $13,042.70
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 12

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 1 LP

Disclosed balance after: 24,034

F9 · price: The price of $1.9127 per share represents a weighted average of purchase prices ranging from $1.76 to $2.01 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.

F2 · ownership.nature: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

F6 · ownership.nature: 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.

Read SEC document
September 26, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 17,202 $1.91 $32,902.27
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 11

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,635

F9 · price: The price of $1.9127 per share represents a weighted average of purchase prices ranging from $1.76 to $2.01 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.

F1 · ownership.direct: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

F6 · ownership.direct: 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.

Read SEC document
September 25, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 2,412 $2.04 $4,931.33
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 10

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Prime Movers Growth Fund I LP

Disclosed balance after: 6,006

F8 · price: The price of $2.0445 per share represents a weighted average of purchase prices ranging from $1.87 to $2.39 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.

F5 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
September 25, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 6,056 $2.04 $12,381.49
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 9

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 3 LP

Disclosed balance after: 15,077

F8 · price: The price of $2.0445 per share represents a weighted average of purchase prices ranging from $1.87 to $2.39 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.

F4 · ownership.nature: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

F6 · ownership.nature: 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.

Read SEC document
September 25, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 2,442 $2.04 $4,992.67
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 8

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 2 LP

Disclosed balance after: 6,078

F8 · price: The price of $2.0445 per share represents a weighted average of purchase prices ranging from $1.87 to $2.39 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.

F3 · ownership.nature: 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.

F6 · ownership.nature: 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.

Read SEC document
September 25, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 12,392 $2.04 $25,335.44
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 7

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 1 LP

Disclosed balance after: 30,853

F8 · price: The price of $2.0445 per share represents a weighted average of purchase prices ranging from $1.87 to $2.39 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.

F2 · ownership.nature: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

F6 · ownership.nature: 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.

Read SEC document
September 25, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 31,261 $2.04 $63,913.11
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 6

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,837

F8 · price: The price of $2.0445 per share represents a weighted average of purchase prices ranging from $1.87 to $2.39 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.

F1 · ownership.direct: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

F6 · ownership.direct: 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.

Read SEC document
September 22, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 1,048 $2.39 $2,500.74
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 5

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Prime Movers Growth Fund I LP

Disclosed balance after: 8,418

F7 · price: The price of $2.3862 per share represents a weighted average of purchase prices ranging from $2.26 to $2.76 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.

F5 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
September 22, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 2,630 $2.39 $6,275.71
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 4

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 3 LP

Disclosed balance after: 21,133

F7 · price: The price of $2.3862 per share represents a weighted average of purchase prices ranging from $2.26 to $2.76 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.

F4 · ownership.nature: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

F6 · ownership.nature: 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.

Read SEC document
September 22, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 1,060 $2.39 $2,529.37
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 3

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 2 LP

Disclosed balance after: 8,520

F7 · price: The price of $2.3862 per share represents a weighted average of purchase prices ranging from $2.26 to $2.76 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.

F3 · ownership.nature: 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.

F6 · ownership.nature: 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.

Read SEC document
September 22, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 5,381 $2.39 $12,840.14
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 2

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 1 LP

Disclosed balance after: 43,245

F7 · price: The price of $2.3862 per share represents a weighted average of purchase prices ranging from $2.26 to $2.76 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.

F2 · ownership.nature: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

F6 · ownership.nature: 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.

Read SEC document
September 22, 2023 Filed Sep 26, 2023 18:18 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 13,574 $2.39 $32,390.28
Disclosure

SEC source: 0001062993-23-018503 · form4.xml · nonDerivative · entry 1

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 109,098

F7 · price: The price of $2.3862 per share represents a weighted average of purchase prices ranging from $2.26 to $2.76 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.

F1 · ownership.direct: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

F6 · ownership.direct: 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.

Read SEC document
September 14, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 6,255 $3.36 $20,990.53
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 15

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Prime Movers Growth Fund I LP

Disclosed balance after: 9,466

F9 · price: The price of $3.3558 per share represents a weighted average of purchase prices ranging from $3.10 to $4.23 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.

F5 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
September 14, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 15,702 $3.36 $52,692.77
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 14

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 3 LP

Disclosed balance after: 23,763

F9 · price: The price of $3.3558 per share represents a weighted average of purchase prices ranging from $3.10 to $4.23 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.

F4 · ownership.nature: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

F6 · ownership.nature: 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.

Read SEC document
September 14, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 6,331 $3.36 $21,245.57
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 13

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 2 LP

Disclosed balance after: 9,580

F9 · price: The price of $3.3558 per share represents a weighted average of purchase prices ranging from $3.10 to $4.23 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.

F3 · ownership.nature: 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.

F6 · ownership.nature: 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.

Read SEC document
September 14, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 32,129 $3.36 $107,818.50
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 12

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 1 LP

Disclosed balance after: 48,626

F9 · price: The price of $3.3558 per share represents a weighted average of purchase prices ranging from $3.10 to $4.23 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.

F2 · ownership.nature: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

F6 · ownership.nature: 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.

Read SEC document
September 14, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 81,055 $3.36 $272,004.37
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 11

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 122,672

F9 · price: The price of $3.3558 per share represents a weighted average of purchase prices ranging from $3.10 to $4.23 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.

F1 · ownership.direct: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

F6 · ownership.direct: 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.

Read SEC document
September 13, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 1,438 $4.51 $6,488.98
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 10

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Prime Movers Growth Fund I LP

Disclosed balance after: 15,721

F8 · price: The price of $4.5125 per share represents a weighted average of purchase prices ranging from $4.05 to $5.00 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.

F5 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
September 13, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 3,610 $4.51 $16,290.13
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 9

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 3 LP

Disclosed balance after: 39,465

F8 · price: The price of $4.5125 per share represents a weighted average of purchase prices ranging from $4.05 to $5.00 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.

F4 · ownership.nature: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

F6 · ownership.nature: 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.

Read SEC document
September 13, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 1,456 $4.51 $6,570.20
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 8

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 2 LP

Disclosed balance after: 15,911

F8 · price: The price of $4.5125 per share represents a weighted average of purchase prices ranging from $4.05 to $5.00 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.

F3 · ownership.nature: 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.

F6 · ownership.nature: 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.

Read SEC document
September 13, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 7,387 $4.51 $33,333.84
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 7

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 1 LP

Disclosed balance after: 80,755

F8 · price: The price of $4.5125 per share represents a weighted average of purchase prices ranging from $4.05 to $5.00 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.

F2 · ownership.nature: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

F6 · ownership.nature: 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.

Read SEC document
September 13, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 18,637 $4.51 $84,099.46
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 6

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 203,727

F8 · price: The price of $4.5125 per share represents a weighted average of purchase prices ranging from $4.05 to $5.00 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.

F1 · ownership.direct: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

F6 · ownership.direct: 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.

Read SEC document
September 12, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 88 $5.19 $456.59
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 5

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Prime Movers Growth Fund I LP

Disclosed balance after: 17,159

F7 · price: The price of $5.1885 per share represents a weighted average of purchase prices ranging from $4.74 to $5.45 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.

F5 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
September 12, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 220 $5.19 $1,141.47
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 4

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 3 LP

Disclosed balance after: 43,075

F7 · price: The price of $5.1885 per share represents a weighted average of purchase prices ranging from $4.74 to $5.45 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.

F4 · ownership.nature: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

F6 · ownership.nature: 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.

Read SEC document
September 12, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 89 $5.19 $461.78
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 3

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 2 LP

Disclosed balance after: 17,367

F7 · price: The price of $5.1885 per share represents a weighted average of purchase prices ranging from $4.74 to $5.45 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.

F3 · ownership.nature: 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.

F6 · ownership.nature: 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.

Read SEC document
September 12, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 450 $5.19 $2,334.83
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 2

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 1 LP

Disclosed balance after: 88,142

F7 · price: The price of $5.1885 per share represents a weighted average of purchase prices ranging from $4.74 to $5.45 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.

F2 · ownership.nature: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

F6 · ownership.nature: 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.

Read SEC document
September 12, 2023 Filed Sep 14, 2023 18:17 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 1,136 $5.19 $5,894.14
Disclosure

SEC source: 0001062993-23-018036 · form4.xml · nonDerivative · entry 1

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 222,364

F7 · price: The price of $5.1885 per share represents a weighted average of purchase prices ranging from $4.74 to $5.45 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.

F1 · ownership.direct: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

F6 · ownership.direct: 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.

Read SEC document
September 11, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 349 $5.57 $1,943.83
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 15

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Prime Movers Growth Fund I LP

Disclosed balance after: 17,247

F9 · price: 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.

F5 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
September 11, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 877 $5.57 $4,884.63
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 14

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 3 LP

Disclosed balance after: 43,295

F9 · price: 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.

F4 · ownership.nature: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

F6 · ownership.nature: 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.

Read SEC document
September 11, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 354 $5.57 $1,971.67
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 13

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 2 LP

Disclosed balance after: 17,456

F9 · price: 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.

F3 · ownership.nature: 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.

F6 · ownership.nature: 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.

Read SEC document
September 11, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 1,794 $5.57 $9,992.04
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 12

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 1 LP

Disclosed balance after: 88,592

F9 · price: 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.

F2 · ownership.nature: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

F6 · ownership.nature: 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.

Read SEC document
September 11, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 4,526 $5.57 $25,208.46
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 11

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 223,500

F9 · price: 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.

F1 · ownership.direct: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

F6 · ownership.direct: 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.

Read SEC document
September 08, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 484 $5.81 $2,814.22
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 10

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Prime Movers Growth Fund I LP

Disclosed balance after: 17,596

F8 · price: 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.

F5 · ownership.nature: 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 · ownership.nature: 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.

Read SEC document
September 08, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 1,215 $5.81 $7,064.62
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 9

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 3 LP

Disclosed balance after: 44,172

F8 · price: 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.

F4 · ownership.nature: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

F6 · ownership.nature: 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.

Read SEC document
September 08, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 490 $5.81 $2,849.11
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 8

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 2 LP

Disclosed balance after: 17,810

F8 · price: 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.

F3 · ownership.nature: 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.

F6 · ownership.nature: 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.

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September 08, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 2,485 $5.81 $14,449.03
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 7

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 1 LP

Disclosed balance after: 90,386

F8 · price: 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.

F2 · ownership.nature: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

F6 · ownership.nature: 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.

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September 08, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 6,269 $5.81 $36,451.10
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 6

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 228,026

F8 · price: 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.

F1 · ownership.direct: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

F6 · ownership.direct: 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.

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September 07, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 906 $6.51 $5,895.80
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 5

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Prime Movers Growth Fund I LP

Disclosed balance after: 18,080

F7 · price: 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.

F5 · ownership.nature: 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 · ownership.nature: 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.

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September 07, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 2,276 $6.51 $14,811.07
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 4

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 3 LP

Disclosed balance after: 45,387

F7 · price: 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.

F4 · ownership.nature: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

F6 · ownership.nature: 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.

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September 07, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 917 $6.51 $5,967.38
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 3

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 2 LP

Disclosed balance after: 18,300

F7 · price: 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.

F3 · ownership.nature: 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.

F6 · ownership.nature: 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.

Read SEC document
September 07, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 4,656 $6.51 $30,298.92
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 2

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 1 LP

Disclosed balance after: 92,871

F7 · price: 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.

F2 · ownership.nature: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

F6 · ownership.nature: 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.

Read SEC document
September 07, 2023 Filed Sep 11, 2023 18:05 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 11,748 $6.51 $76,450.11
Disclosure

SEC source: 0001062993-23-017915 · form4.xml · nonDerivative · entry 1

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 234,295

F7 · price: 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.

F1 · ownership.direct: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

F6 · ownership.direct: 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.

Read SEC document
June 08, 2023 Filed Jun 9, 2023 16:14 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 722,301 $0.27 $192,059.84
Disclosure

SEC source: 0001062993-23-013266 · form4.xml · nonDerivative · entry 4

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 1 LP

Disclosed balance after: 4,876,327

F8 · price: The price of $0.2659 per share represents a weighted average of purchase prices ranging from $0.2610 to $0.3100 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.

F2 · ownership.nature: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

F6 · ownership.nature: 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.

Read SEC document
June 08, 2023 Filed Jun 9, 2023 16:14 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 1,822,239 $0.27 $484,533.35
Disclosure

SEC source: 0001062993-23-013266 · form4.xml · nonDerivative · entry 3

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,302,114

F8 · price: The price of $0.2659 per share represents a weighted average of purchase prices ranging from $0.2610 to $0.3100 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.

F1 · ownership.direct: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

F6 · ownership.direct: 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.

Read SEC document
June 07, 2023 Filed Jun 9, 2023 16:14 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 413,152 $0.31 $126,796.35
Disclosure

SEC source: 0001062993-23-013266 · form4.xml · nonDerivative · entry 2

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Momentus PML SPV 1 LP

Disclosed balance after: 5,598,628

F7 · price: The price of $0.3069 per share represents a weighted average of purchase prices ranging from $0.30000 to $0.35035 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.

F2 · ownership.nature: Held by Momentus PML SPV 1 LP ("PML SPV 1"). PML GP is the general partner of PML SPV 1.

F6 · ownership.nature: 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.

Read SEC document
June 07, 2023 Filed Jun 9, 2023 16:14 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A common stock 1,042,308 $0.31 $319,884.33
Disclosure

SEC source: 0001062993-23-013266 · form4.xml · nonDerivative · entry 1

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,124,353

F7 · price: The price of $0.3069 per share represents a weighted average of purchase prices ranging from $0.30000 to $0.35035 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.

F1 · ownership.direct: Held by Prime Movers Lab Fund I LP ("PML"). Prime Movers Lab GP I LLC ("PML GP") is the general partner of PML.

F6 · ownership.direct: 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.

Read SEC document
June 09, 2022 Filed Jun 10, 2022 17:52 UTC Momentus Inc. MNTS · Entity 6834 SaleClass A Common Stock 5,345 $3.10 $16,594.62
Disclosure

SEC source: 0001062993-22-014678 · form4.xml · nonDerivative · entry 8

Prime Movers Lab Fund I LP · CIK 0001751631 · 10% owner

Prime Movers Growth Fund I LP · CIK 0001838981 · 10% owner

Sloss Dakin · CIK 0001875411 · 10% owner

Momentus PML SPV 1 LP · CIK 0001780632 · 10% owner

MOMENTUS PML SPV 2 LP · CIK 0001819327 · 10% owner

Momentus PML SPV 3 LP · CIK 0001853076 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by Momentus PML SPV 3 LP

Disclosed balance after: 2,383,123

F8 · price: The price of $3.1047 per share represents a weighted average of purchase prices ranging from $3.03 to $3.20 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.

F4 · ownership.nature: Held by Momentus PML SPV 3 LP ("PML SPV 3"). PML GP II is the general partner of PML SPV 3.

F6 · ownership.nature: 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.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.