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Pfanstiel Steven

Disclosed activity across 2 companies

Tapewire entity
45172
SEC CIK
0001856059

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Reported relationships

Latest disclosed role at each company.

No relationships currently tracked through insider filings.

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.

No balances currently tracked through insider filings.

Past disclosures · reporting ended (2)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

MARINUS PHARMACEUTICALS, INC.

Report date February 07, 2025 · Filed February 11, 2025

Section 16 reporting ended · disclosed 2025-02-11. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect0 Ending reported balance After 2025-02-11 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2025-02-07 · Disposition to issuer · Disposed 17,303 · Balance 62,470

F1: On December 29, 2024, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with Immedica Pharma AB, a corporation organized and existing under the laws of Sweden ("Parent"), and Matador Subsidiary, Inc. a Delaware corporation and a wholly owned subsidiary of Parent ("Purchaser"). Pursuant to the terms of the Merger Agreement and the Offer (as defined in the Merger Agreement), each share of the Issuer's common stock (the "Common Stock") held by the Reporting Person was acquired, subject to adjustment, at a purchase price of $0.55 per share (the "Offer Price") in cash.

Row 2 · 2025-02-11 · Disposition to issuer · Disposed 62,470 · Balance 0

F1: On December 29, 2024, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with Immedica Pharma AB, a corporation organized and existing under the laws of Sweden ("Parent"), and Matador Subsidiary, Inc. a Delaware corporation and a wholly owned subsidiary of Parent ("Purchaser"). Pursuant to the terms of the Merger Agreement and the Offer (as defined in the Merger Agreement), each share of the Issuer's common stock (the "Common Stock") held by the Reporting Person was acquired, subject to adjustment, at a purchase price of $0.55 per share (the "Offer Price") in cash.

F2: Represents 62,470 shares underlying Restricted Stock Units (the "RSUs"). Pursuant to the terms of the Merger Agreement, at the effective time of the merger (the "Effective Time"), each outstanding RSU was terminated in exchange for a lump sum cash payment equal to (i) the Offer Price multiplied by (ii) the number of shares of Common Stock underlying the RSU.

Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $1.40 · Expires 2034-06-18Direct0 Reported balance After 2025-02-11 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2025-02-11 · Disposition to issuer · Disposed 57,300 · Balance 0

F3: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $9.74 · Expires 2034-01-18Direct0 Reported balance After 2025-02-11 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2025-02-11 · Disposition to issuer · Disposed 114,600 · Balance 0

F3: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $5.94 · Expires 2033-01-26Direct0 Reported balance After 2025-02-11 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2025-02-11 · Disposition to issuer · Disposed 126,585 · Balance 0

F3: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $10.40 · Expires 2032-02-04Direct0 Reported balance After 2025-02-11 transaction · row 6 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 6 · 2025-02-11 · Disposition to issuer · Disposed 74,475 · Balance 0

F3: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $13.99 · Expires 2031-04-12Direct0 Reported balance After 2025-02-11 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2025-02-11 · Disposition to issuer · Disposed 220,000 · Balance 0

F3: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

Filing footnotes · ownership attribution and instrument terms

F1: On December 29, 2024, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with Immedica Pharma AB, a corporation organized and existing under the laws of Sweden ("Parent"), and Matador Subsidiary, Inc. a Delaware corporation and a wholly owned subsidiary of Parent ("Purchaser"). Pursuant to the terms of the Merger Agreement and the Offer (as defined in the Merger Agreement), each share of the Issuer's common stock (the "Common Stock") held by the Reporting Person was acquired, subject to adjustment, at a purchase price of $0.55 per share (the "Offer Price") in cash.

F2: Represents 62,470 shares underlying Restricted Stock Units (the "RSUs"). Pursuant to the terms of the Merger Agreement, at the effective time of the merger (the "Effective Time"), each outstanding RSU was terminated in exchange for a lump sum cash payment equal to (i) the Offer Price multiplied by (ii) the number of shares of Common Stock underlying the RSU.

F3: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

Neuronetics, Inc.

Report date March 19, 2026 · Filed May 21, 2026 · Amendment

Section 16 reporting ended · disclosed 2026-05-21. Current position is not established by this disclosure.

Amendment: balances below belong to this corrected disclosure, not necessarily a complete replacement of earlier positions.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect836,643 Reported balance After 2026-03-19 transaction · row 1 Amendment: may correct only part of an earlier disclosure.
1 source row

Row 1 · 2026-03-19 · Sale · Disposed 8,569 · Balance 836,643

F1: The Form 4 filed on March 24, 2026 inadvertently reported the disposition of 16,431 shares of common stock in connection with non-discretionary sales to satisfy the Reporting Person's tax withholding obligation upon vesting of a portion of a performance restricted stock unit award. However, the correct amount is 8,569 shares of common stock.

F2: The price reported is a weighted average price. These shares were sold in multiple transactions at per share prices ranging from $1.48 to $1.20. The Reporting Person undertakes to provide upon request to the SEC staff, the Issuer, or any stockholder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Filing footnotes · ownership attribution and instrument terms

F1: The Form 4 filed on March 24, 2026 inadvertently reported the disposition of 16,431 shares of common stock in connection with non-discretionary sales to satisfy the Reporting Person's tax withholding obligation upon vesting of a portion of a performance restricted stock unit award. However, the correct amount is 8,569 shares of common stock.

F2: The price reported is a weighted average price. These shares were sold in multiple transactions at per share prices ranging from $1.48 to $1.20. The Reporting Person undertakes to provide upon request to the SEC staff, the Issuer, or any stockholder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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
March 19, 2026 Filed Mar 24, 2026 21:52 UTC Neuronetics, Inc. STIM · Entity 6248 SaleCommon Stock 16,431 $1.34 $22,017.54
Disclosure

SEC source: 0001193125-26-122298 · ownership.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · EVP, CFO and Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 828,781

F1 · shares: The sales reported in this Form 4 were non-discretionary sales to satisfy the Reporting Person's tax withholding obligation upon vesting of a portion of a performance restricted stock unit award.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at per share prices ranging from $1.48 to $1.20. The Reporting Person undertakes to provide upon request to the SEC staff, the Issuer, or any stockholder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
March 19, 2026 Filed May 21, 2026 20:05 UTC Amendment Neuronetics, Inc. STIM · Entity 6248 SaleCommon Stock 8,569 $1.34 $11,482.46
Disclosure

SEC source: 0001856059-26-000002 · ownership.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · Former EVP, CFO and Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 836,643

F1 · shares: The Form 4 filed on March 24, 2026 inadvertently reported the disposition of 16,431 shares of common stock in connection with non-discretionary sales to satisfy the Reporting Person's tax withholding obligation upon vesting of a portion of a performance restricted stock unit award. However, the correct amount is 8,569 shares of common stock.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at per share prices ranging from $1.48 to $1.20. The Reporting Person undertakes to provide upon request to the SEC staff, the Issuer, or any stockholder of the Issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
March 17, 2026 Filed Mar 18, 2026 20:33 UTC Neuronetics, Inc. STIM · Entity 6248 GrantCommon Stock 25,000 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-114111 · ownership.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · EVP, CFO and Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 845,212

F1 · shares: Represents a restricted stock unit ("RSU") award that vests in three equal annual installments beginning on March 17, 2027, in each case subject to continuous service of the Reporting Person through such date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
February 23, 2026 Filed Feb 25, 2026 21:30 UTC Neuronetics, Inc. STIM · Entity 6248 GrantCommon Stock 250,000 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-071774 · ownership.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · EVP, CFO and Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 820,212

F1 · shares: Represents a restricted stock unit ("RSU") award that vests in three equal annual installments beginning on February 23, 2027, in each case subject to continuous service of the Reporting Person through such date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
December 30, 2025 Filed Dec 31, 2025 22:05 UTC Neuronetics, Inc. STIM · Entity 6248 GrantCommon Stock 170,212 $0.00 $0.00
Disclosure

SEC source: 0001193125-25-338392 · ownership.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · EVP, CFO and Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 570,212

F1 · shares: Represents a restricted stock unit ("RSU") award that vests on the earlier of (i) June 30, 2027 and (ii) the termination of Mr. Pfanstiel's employment from the Issuer without cause.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
July 15, 2025 Filed Jul 15, 2025 21:00 UTC Neuronetics, Inc. STIM · Entity 6248 GrantCommon Stock 200,000 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-095914 · ownership.xml · nonDerivative · entry 2

Pfanstiel Steven · CIK 0001856059 · EVP, CFO and Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 400,000

F3 · shares: Represents a RSU award that vests in three equal annual installments beginning on July 15, 2027, in each case subject to continuous service of the Reporting Person through such date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
July 15, 2025 Filed Jul 15, 2025 21:00 UTC Neuronetics, Inc. STIM · Entity 6248 GrantCommon Stock 200,000 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-095914 · ownership.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · EVP, CFO and Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,000

F1 · shares: Represents a restricted stock unit ("RSU") award that vests in three equal annual installments beginning on July 15, 2026, in each case subject to continuous service of the Reporting Person through such date.

F2 · price: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

Read SEC document
February 11, 2025 Filed Feb 11, 2025 09:13 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 Disposition to issuerStock Option (Right to Buy) · Derivative 220,000 $0.00 Strike: $13.99 $0.00
Disclosure

SEC source: 0001104659-25-011241 · tm255946-4_4seq1.xml · derivative · entry 7

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 220,000 shares

Expires 2031-04-12

F3 · kind: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

F3 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

Read SEC document
February 11, 2025 Filed Feb 11, 2025 09:13 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 Disposition to issuerStock Option (Right to Buy) · Derivative 74,475 $0.00 Strike: $10.40 $0.00
Disclosure

SEC source: 0001104659-25-011241 · tm255946-4_4seq1.xml · derivative · entry 6

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 74,475 shares

Expires 2032-02-04

F3 · kind: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

F3 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

Read SEC document
February 11, 2025 Filed Feb 11, 2025 09:13 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 Disposition to issuerStock Option (Right to Buy) · Derivative 126,585 $0.00 Strike: $5.94 $0.00
Disclosure

SEC source: 0001104659-25-011241 · tm255946-4_4seq1.xml · derivative · entry 5

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 126,585 shares

Expires 2033-01-26

F3 · kind: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

F3 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

Read SEC document
February 11, 2025 Filed Feb 11, 2025 09:13 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 Disposition to issuerStock Option (Right to Buy) · Derivative 114,600 $0.00 Strike: $9.74 $0.00
Disclosure

SEC source: 0001104659-25-011241 · tm255946-4_4seq1.xml · derivative · entry 4

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 114,600 shares

Expires 2034-01-18

F3 · kind: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

F3 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

Read SEC document
February 11, 2025 Filed Feb 11, 2025 09:13 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 Disposition to issuerStock Option (Right to Buy) · Derivative 57,300 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001104659-25-011241 · tm255946-4_4seq1.xml · derivative · entry 3

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 57,300 shares

Expires 2034-06-18

F3 · kind: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

F3 · derivative.exercise_date: Pursuant to the terms of the Merger Agreement, at the Effective Time, each outstanding out-of-the-money stock option (i.e., a stock option that has an exercise price per share that is greater than the Offer Price) was terminated and the Reporting Person was not entitled to any payment in respect thereof.

Read SEC document
February 11, 2025 Filed Feb 11, 2025 09:13 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 Disposition to issuerCommon Stock 62,470 $0.55 $34,358.50
Disclosure

SEC source: 0001104659-25-011241 · tm255946-4_4seq1.xml · nonDerivative · entry 2

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · kind: On December 29, 2024, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with Immedica Pharma AB, a corporation organized and existing under the laws of Sweden ("Parent"), and Matador Subsidiary, Inc. a Delaware corporation and a wholly owned subsidiary of Parent ("Purchaser"). Pursuant to the terms of the Merger Agreement and the Offer (as defined in the Merger Agreement), each share of the Issuer's common stock (the "Common Stock") held by the Reporting Person was acquired, subject to adjustment, at a purchase price of $0.55 per share (the "Offer Price") in cash.

F2 · shares: Represents 62,470 shares underlying Restricted Stock Units (the "RSUs"). Pursuant to the terms of the Merger Agreement, at the effective time of the merger (the "Effective Time"), each outstanding RSU was terminated in exchange for a lump sum cash payment equal to (i) the Offer Price multiplied by (ii) the number of shares of Common Stock underlying the RSU.

F1 · price: On December 29, 2024, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with Immedica Pharma AB, a corporation organized and existing under the laws of Sweden ("Parent"), and Matador Subsidiary, Inc. a Delaware corporation and a wholly owned subsidiary of Parent ("Purchaser"). Pursuant to the terms of the Merger Agreement and the Offer (as defined in the Merger Agreement), each share of the Issuer's common stock (the "Common Stock") held by the Reporting Person was acquired, subject to adjustment, at a purchase price of $0.55 per share (the "Offer Price") in cash.

Read SEC document
February 07, 2025 Filed Feb 11, 2025 09:13 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 Disposition to issuerCommon Stock 17,303 $0.55 $9,516.65
Disclosure

SEC source: 0001104659-25-011241 · tm255946-4_4seq1.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,470

F1 · kind: On December 29, 2024, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with Immedica Pharma AB, a corporation organized and existing under the laws of Sweden ("Parent"), and Matador Subsidiary, Inc. a Delaware corporation and a wholly owned subsidiary of Parent ("Purchaser"). Pursuant to the terms of the Merger Agreement and the Offer (as defined in the Merger Agreement), each share of the Issuer's common stock (the "Common Stock") held by the Reporting Person was acquired, subject to adjustment, at a purchase price of $0.55 per share (the "Offer Price") in cash.

F1 · price: On December 29, 2024, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with Immedica Pharma AB, a corporation organized and existing under the laws of Sweden ("Parent"), and Matador Subsidiary, Inc. a Delaware corporation and a wholly owned subsidiary of Parent ("Purchaser"). Pursuant to the terms of the Merger Agreement and the Offer (as defined in the Merger Agreement), each share of the Issuer's common stock (the "Common Stock") held by the Reporting Person was acquired, subject to adjustment, at a purchase price of $0.55 per share (the "Offer Price") in cash.

Read SEC document
August 05, 2024 Filed Aug 7, 2024 16:05 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 SaleCommon Stock 4,657 $1.13 $5,262.41
Disclosure

SEC source: 0001415889-24-020898 · form4-08072024_040810.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,773

F1 · kind: The sales reported on this Form 4 represent shares of common stock of Marinus Pharmaceuticals, Inc. (the "Company") sold by the reporting person pursuant to a Rule 10b5-1 Plan adopted on May 16, 2022 to cover tax obligations in connection with the vesting of restricted stock units.

F2 · price: The price reported in column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $1.11 to $1.16, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4.

Read SEC document
June 18, 2024 Filed Jun 20, 2024 16:21 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 GrantStock Option (Right to Buy) · Derivative 57,300 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001415889-24-017629 · form4-06202024_080659.xml · derivative · entry 2

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,300

Underlying: Common Stock · 57,300 shares

Expires 2034-06-18

F2 · derivative.exercise_date: The option vests and becomes exercisable in full on July 15, 2025, subject to the reporting person's continued service with the Issuer.

Read SEC document
June 18, 2024 Filed Jun 20, 2024 16:21 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 GrantCommon Stock 12,733 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-017629 · form4-06202024_080659.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,430

F1 · shares: Represents the grant of restricted stock units (RSUs). The RSUs vest in full on July 15, 2025, subject to the reporting person's continued service with Marinus Pharmaceuticals, Inc. (the Issuer). Each RSU represents the right to receive one share of common stock of the Issuer.

Read SEC document
February 16, 2024 Filed Feb 21, 2024 16:05 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 SaleCommon Stock 3,092 $9.97 $30,827.24
Disclosure

SEC source: 0001415889-24-004576 · form4-02212024_040204.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,697

F1 · kind: The sales reported on this Form 4 represent shares of common stock of Marinus Pharmaceuticals, Inc. (the "Company") sold by the reporting person pursuant to a Rule 10b5-1 Plan adopted on May 16, 2022 to cover tax obligations in connection with the vesting of restricted stock units.

F2 · price: The price reported in column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $9.96 to $9.98, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4.

Read SEC document
January 18, 2024 Filed Jan 19, 2024 16:19 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 GrantStock Option (Right to Buy) · Derivative 114,600 $0.00 Strike: $9.74 $0.00
Disclosure

SEC source: 0001415889-24-001591 · form4-01192024_090127.xml · derivative · entry 2

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,600

Underlying: Common Stock · 114,600 shares

Expires 2034-01-18

F2 · derivative.exercise_date: The option vests and becomes exercisable in 36 equal monthly installments beginning on February 18, 2024, subject to the reporting person's continued service with the Issuer.

Read SEC document
January 18, 2024 Filed Jan 19, 2024 16:19 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 GrantCommon Stock 25,465 $0.00 $0.00
Disclosure

SEC source: 0001415889-24-001591 · form4-01192024_090127.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,789

F1 · shares: Represents the grant of restricted stock units (RSUs). The RSUs vest in three equal installments, with the first installment vesting on February 15, 2025, the second installment vesting on February 15, 2026, and the third installment vesting on February 15, 2027, subject to the reporting person's continued service with Marinus Pharmaceuticals, Inc. (the Issuer). Each RSU represents the right to receive one share of common stock of the Issuer.

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August 08, 2023 Filed Aug 8, 2023 21:05 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 SaleCommon Stock 14 $8.93 $125.02
Disclosure

SEC source: 0001415889-23-011950 · form4-08082023_090805.xml · nonDerivative · entry 2

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 49,324

F1 · kind: The sales reported on this Form 4 represent shares of common stock of Marinus Pharmaceuticals, Inc. (the "Company") sold by the reporting person pursuant to a Rule 10b5-1 Plan adopted on May 16, 2022 to cover tax obligations in connection with the vesting of restricted stock units.

F3 · price: The price reported in column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $8.58 to $8.96, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (3) to this Form 4.

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August 07, 2023 Filed Aug 8, 2023 21:05 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 SaleCommon Stock 2,790 $9.54 $26,616.60
Disclosure

SEC source: 0001415889-23-011950 · form4-08082023_090805.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · CFO AND COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 49,338

F1 · kind: The sales reported on this Form 4 represent shares of common stock of Marinus Pharmaceuticals, Inc. (the "Company") sold by the reporting person pursuant to a Rule 10b5-1 Plan adopted on May 16, 2022 to cover tax obligations in connection with the vesting of restricted stock units.

F2 · price: The price reported in column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $9.38 to $9.83, inclusive. The reporting person undertakes to provide to the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2) to this Form 4.

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January 26, 2023 Filed Jan 30, 2023 16:33 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 GrantStock Option (Right to Buy) · Derivative 126,585 $0.00 Strike: $5.94 $0.00
Disclosure

SEC source: 0001415889-23-001581 · form4-01302023_090151.xml · derivative · entry 2

Pfanstiel Steven · CIK 0001856059 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 126,585

Underlying: Common Stock · 126,585 shares

Expires 2033-01-26

F2 · derivative.exercise_date: The option vests and becomes exercisable in 36 equal monthly installments beginning on February 26, 2023, subject to the reporting person's continued service with the Issuer.

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January 26, 2023 Filed Jan 30, 2023 16:33 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 GrantCommon Stock 28,130 $0.00 $0.00
Disclosure

SEC source: 0001415889-23-001581 · form4-01302023_090151.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 52,128

F1 · shares: Represents the grant of restricted stock units (RSUs). The RSUs vest in three equal installments, with the first installment vesting on February 15, 2024, the second installment vesting on February 15, 2025, and the third installment vesting on February 15, 2026, subject to the reporting person's continued service with Marinus Pharmaceuticals, Inc. (the Issuer). Each RSU represents the right to receive one share of common stock of the Issuer.

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May 24, 2022 Filed May 26, 2022 16:01 UTC MARINUS PHARMACEUTICALS, INC. MRNS] · Entity 83359 GrantCommon Stock 7,448 $0.00 $0.00
Disclosure

SEC source: 0001104659-22-065237 · tm2216988-2_4seq1.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,998

F1 · shares: Represents the grant of restricted stock units (RSUs). The RSUs vest in two equal installments, with the first installment vesting on August 4, 2023, and the second installment vesting on August 4, 2024, subject to the reporting person's continued service with Marinus Pharmaceuticals, Inc. (the Issuer). Each RSU represents the right to receive one share of common stock of the Issuer.

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February 04, 2022 Filed Feb 7, 2022 16:13 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 GrantStock Option (Right to Buy) · Derivative 74,475 $0.00 Strike: $10.40 $0.00
Disclosure

SEC source: 0001104659-22-012794 · tm225605-11_4seq1.xml · derivative · entry 2

Pfanstiel Steven · CIK 0001856059 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,475

Underlying: Common Stock · 74,475 shares

Expires 2032-02-04

F2 · derivative.exercise_date: The option vests and becomes exercisable in 36 equal monthly installments beginning on March 4, 2022.

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February 04, 2022 Filed Feb 7, 2022 16:13 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 GrantCommon Stock 16,550 $0.00 $0.00
Disclosure

SEC source: 0001104659-22-012794 · tm225605-11_4seq1.xml · nonDerivative · entry 1

Pfanstiel Steven · CIK 0001856059 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,550

F1 · shares: Represents the grant of restricted stock units (RSUs). The RSUs vest in three equal installments, with the first installment vesting on August 4, 2023, the second installment vesting on August 4, 2024, and the third installment vesting on August 4, 2025, subject to the reporting person's continued service with Marinus Pharmaceuticals, Inc. (the Issuer). Each RSU represents the right to receive one share of common stock of the Issuer.

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April 12, 2021 Filed Apr 13, 2021 21:59 UTC MARINUS PHARMACEUTICALS, INC. MRNS · Entity 83359 GrantStock option (right to buy) · Derivative 220,000 $0.00 Strike: $13.99 $0.00
Disclosure

SEC source: 0001104659-21-049910 · tm2112857-2_4seq1.xml · derivative · entry 1

Pfanstiel Steven · CIK 0001856059 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 220,000

Underlying: Common Stock · 220,000 shares

Expires 2031-04-12

F1 · derivative.exercise_date: Options to purchase shares of common stock vest 25% on 4/12/22, and the remainder in 36 equal monthly installments, commencing on 4/30/22.

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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.