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person · Reporting owner

Melkote Rajesh Ramaswamy

Disclosed activity across 1 company

Tapewire entity
74038
SEC CIK
0002064133

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
374Water Inc.SCWO · Entity 7200Chief Technology OfficerOctober 09, 2025October 23, 2025

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.

374Water Inc.

Report date October 09, 2025 · Filed October 23, 2025

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock options (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.60Direct500,000 Reported balance After 2025-10-09 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2025-10-09 · Grant · Acquired 500,000 · Balance 500,000

F1: Represents stock options granted to the Reporting Person as a special retention incentive award in connection with his continued service as Chief Technology Officer of 374Water Inc. (the "Company"). 50% of the stock options vest and become exercisable on the first anniversary of the grant date and the remaining 50% of the stock options vest and become exercisable on the second anniversary of the grant date, subject to the Reporting Person's continuous service through each vesting date. In the event of an involuntary termination of the Reporting Person without cause, all remaining unvested stock options will vest and become exercisable immediately. Upon vesting, each stock option gives the Reporting Person the right to purchase one share of the Company's Common Stock at the exercise price. The stock options expire on the date which is ten years from the grant date, unless earlier terminated in accordance with the stock option grant agreement.

Filing footnotes · ownership attribution and instrument terms

F1: Represents stock options granted to the Reporting Person as a special retention incentive award in connection with his continued service as Chief Technology Officer of 374Water Inc. (the "Company"). 50% of the stock options vest and become exercisable on the first anniversary of the grant date and the remaining 50% of the stock options vest and become exercisable on the second anniversary of the grant date, subject to the Reporting Person's continuous service through each vesting date. In the event of an involuntary termination of the Reporting Person without cause, all remaining unvested stock options will vest and become exercisable immediately. Upon vesting, each stock option gives the Reporting Person the right to purchase one share of the Company's Common Stock at the exercise price. The stock options expire on the date which is ten years from the grant date, unless earlier terminated in accordance with the stock option grant agreement.

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
October 09, 2025 Filed Oct 23, 2025 20:26 UTC 374Water Inc. SCWO · Entity 7200 GrantStock options (right to buy) · Derivative 500,000 $0.00 Strike: $0.60 $0.00
Disclosure

SEC source: 0001654954-25-012143 · section16.xml · derivative · entry 1

Melkote Rajesh Ramaswamy · CIK 0002064133 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 500,000

Underlying: Common Stock · 500,000 shares

Expires not disclosed

F1 · shares: Represents stock options granted to the Reporting Person as a special retention incentive award in connection with his continued service as Chief Technology Officer of 374Water Inc. (the "Company"). 50% of the stock options vest and become exercisable on the first anniversary of the grant date and the remaining 50% of the stock options vest and become exercisable on the second anniversary of the grant date, subject to the Reporting Person's continuous service through each vesting date. In the event of an involuntary termination of the Reporting Person without cause, all remaining unvested stock options will vest and become exercisable immediately. Upon vesting, each stock option gives the Reporting Person the right to purchase one share of the Company's Common Stock at the exercise price. The stock options expire on the date which is ten years from the grant date, unless earlier terminated in accordance with the stock option grant agreement.

F1 · derivative.exercise_date: Represents stock options granted to the Reporting Person as a special retention incentive award in connection with his continued service as Chief Technology Officer of 374Water Inc. (the "Company"). 50% of the stock options vest and become exercisable on the first anniversary of the grant date and the remaining 50% of the stock options vest and become exercisable on the second anniversary of the grant date, subject to the Reporting Person's continuous service through each vesting date. In the event of an involuntary termination of the Reporting Person without cause, all remaining unvested stock options will vest and become exercisable immediately. Upon vesting, each stock option gives the Reporting Person the right to purchase one share of the Company's Common Stock at the exercise price. The stock options expire on the date which is ten years from the grant date, unless earlier terminated in accordance with the stock option grant agreement.

F1 · derivative.expiration_date: Represents stock options granted to the Reporting Person as a special retention incentive award in connection with his continued service as Chief Technology Officer of 374Water Inc. (the "Company"). 50% of the stock options vest and become exercisable on the first anniversary of the grant date and the remaining 50% of the stock options vest and become exercisable on the second anniversary of the grant date, subject to the Reporting Person's continuous service through each vesting date. In the event of an involuntary termination of the Reporting Person without cause, all remaining unvested stock options will vest and become exercisable immediately. Upon vesting, each stock option gives the Reporting Person the right to purchase one share of the Company's Common Stock at the exercise price. The stock options expire on the date which is ten years from the grant date, unless earlier terminated in accordance with the stock option grant agreement.

F1 · derivative.underlying_shares: Represents stock options granted to the Reporting Person as a special retention incentive award in connection with his continued service as Chief Technology Officer of 374Water Inc. (the "Company"). 50% of the stock options vest and become exercisable on the first anniversary of the grant date and the remaining 50% of the stock options vest and become exercisable on the second anniversary of the grant date, subject to the Reporting Person's continuous service through each vesting date. In the event of an involuntary termination of the Reporting Person without cause, all remaining unvested stock options will vest and become exercisable immediately. Upon vesting, each stock option gives the Reporting Person the right to purchase one share of the Company's Common Stock at the exercise price. The stock options expire on the date which is ten years from the grant date, unless earlier terminated in accordance with the stock option grant agreement.

Read SEC document
August 28, 2025 Filed Sep 3, 2025 01:38 UTC 374Water Inc. SCWO · Entity 7200 GrantCommon Stock (restricted stock units) 125,000 $0.00 $0.00
Disclosure

SEC source: 0001654954-25-010326 · section16.xml · nonDerivative · entry 1

Melkote Rajesh Ramaswamy · CIK 0002064133 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 882,756

F1 · shares: The restricted stock unit vests in equal monthly installments over 36 months, on the last day of each month, beginning on March 31, 2025, subject to the Reporting Person's continuous service through each vesting date

Read SEC document
April 30, 2025 Filed May 2, 2025 21:07 UTC 374Water Inc. SCWO · Entity 7200 GrantStock options (right to buy) · Derivative 757,576 $0.00 Strike: $0.33 $0.00
Disclosure

SEC source: 0001654954-25-005061 · section16.xml · derivative · entry 2

Melkote Rajesh Ramaswamy · CIK 0002064133 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 757,756

Underlying: Common Stock · 757,576 shares

Expires 2035-04-29

F1 · shares: Vesting commencement date is March 31, 2025. 25% of the shares vest and become exercisable on the first annual anniversary of the vesting commencement date and the balance vest and become exercisable equally on the last day of every month thereafter over the following 36 months, subject to the Reporting Person's continuous service through each vesting date.

F1 · derivative.exercise_date: Vesting commencement date is March 31, 2025. 25% of the shares vest and become exercisable on the first annual anniversary of the vesting commencement date and the balance vest and become exercisable equally on the last day of every month thereafter over the following 36 months, subject to the Reporting Person's continuous service through each vesting date.

Read SEC document
April 30, 2025 Filed May 2, 2025 21:07 UTC 374Water Inc. SCWO · Entity 7200 GrantCommon Stock (restricted stock units) 757,756 $0.00 $0.00
Disclosure

SEC source: 0001654954-25-005061 · section16.xml · nonDerivative · entry 1

Melkote Rajesh Ramaswamy · CIK 0002064133 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 757,756

F1 · shares: Vesting commencement date is March 31, 2025. 25% of the shares vest and become exercisable on the first annual anniversary of the vesting commencement date and the balance vest and become exercisable equally on the last day of every month thereafter over the following 36 months, subject to the Reporting Person's continuous service through each vesting date.

Read SEC document

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