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person · Reporting owner

Meisner Derek M

Disclosed activity across 3 companies

Tapewire entity
61758
SEC CIK
0001752461

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Acumen Pharmaceuticals, Inc.ABOS · Entity 6281Chief Legal Officer & Corp SecMarch 06, 2026March 10, 2026
GENOCEA BIOSCIENCES, INC.GNCA · Entity 12635SENIOR VP AND GENERAL COUNSELFebruary 07, 2019February 11, 2019
X4 Pharmaceuticals, IncXFOR · Entity 5638Chief Legal OfficerAugust 17, 2022August 19, 2022

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.

Acumen Pharmaceuticals, Inc.

Report date March 06, 2026 · Filed March 10, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect173,999 Ending reported balance After 2026-03-06 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-03-06 · Exercise / conversion · Acquired 2,090 · Balance 176,089

Row 2 · 2026-03-06 · Sale · Disposed 2,090 · Balance 173,999

F1: The reported sales occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 29, 2025.

Employee Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $1.85 · Expires 2035-01-06Direct71,048 Reported balance After 2026-03-06 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2026-03-06 · Exercise / conversion · Disposed 2,090 · Balance 71,048

F2: The shares subject to the option will vest in 48 equal monthly installments such that the option is fully vested on the fourth anniversary of the date of grant, subject to the Reporting Person's continuous service through each such vesting date.

Filing footnotes · ownership attribution and instrument terms

F1: The reported sales occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 29, 2025.

F2: The shares subject to the option will vest in 48 equal monthly installments such that the option is fully vested on the fourth anniversary of the date of grant, subject to the Reporting Person's continuous service through each such vesting date.

GENOCEA BIOSCIENCES, INC.

Report date February 07, 2019 · Filed February 11, 2019

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.54 · Expires 2029-02-07Direct200,000 Reported balance After 2019-02-07 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2019-02-07 · Grant · Acquired 200,000 · Balance 200,000

F1: The Stock Option will vest as to 1/4th of the shares subject to the option on the first anniversary of the Grant Date and thereafter as to 1/36th of the shares on each subsequent monthly anniversary of February 7, 2020 (rounded down to the nearest whole share, except for the final vesting period, with respect to which all remaining shares will vest).

Filing footnotes · ownership attribution and instrument terms

F1: The Stock Option will vest as to 1/4th of the shares subject to the option on the first anniversary of the Grant Date and thereafter as to 1/36th of the shares on each subsequent monthly anniversary of February 7, 2020 (rounded down to the nearest whole share, except for the final vesting period, with respect to which all remaining shares will vest).

X4 Pharmaceuticals, Inc

Report date August 17, 2022 · Filed August 19, 2022

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect145,155 Reported balance After 2022-08-17 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2022-08-17 · Sale · Disposed 8,334 · Balance 145,155

F1: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.155 to $1.215, inclusive. The Reporting Person undertakes to provide 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 range.

F3: Represents unvested restricted stock units.

Filing footnotes · ownership attribution and instrument terms

F1: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.155 to $1.215, inclusive. The Reporting Person undertakes to provide 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 range.

F3: Represents unvested restricted stock units.

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
November 26, 2019 Filed Nov 27, 2019 16:10 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantStock Option (right to buy) · Derivative 55,000 $0.00 Strike: $11.03 $0.00
Disclosure

SEC source: 0001628280-19-014580 · wf-form4_157488901181061.xml · derivative · entry 1

Meisner Derek M · CIK 0001752461 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,000

Underlying: Common Stock · 55,000 shares

Expires 2029-11-25

F1 · derivative.exercise_date: 25% of the shares subject to the option shall vest on November 26, 2020, with the remainder vesting in equal installments of 2.0833% of the shares subject to the option on the last day of each successive month thereafter for a period of 36 months, subject to the Reporting Person continuing to provide services through each such date.

Read SEC document
February 07, 2019 Filed Feb 11, 2019 20:59 UTC GENOCEA BIOSCIENCES, INC. GNCA · Entity 12635 GrantStock Option (Right to Buy) · Derivative 200,000 $0.00 Strike: $0.54 $0.00
Disclosure

SEC source: 0001457612-19-000013 · wf-form4_154993672902137.xml · derivative · entry 1

Meisner Derek M · CIK 0001752461 · SENIOR VP AND GENERAL COUNSEL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200,000

Underlying: Common Stock · 200,000 shares

Expires 2029-02-07

F1 · derivative.exercise_date: The Stock Option will vest as to 1/4th of the shares subject to the option on the first anniversary of the Grant Date and thereafter as to 1/36th of the shares on each subsequent monthly anniversary of February 7, 2020 (rounded down to the nearest whole share, except for the final vesting period, with respect to which all remaining shares will vest).

Read SEC document
September 20, 2018 Filed Sep 21, 2018 16:03 UTC GENOCEA BIOSCIENCES, INC. GNCA · Entity 12635 GrantStock Option (Right to Buy) · Derivative 200,000 $0.00 Strike: $0.51 $0.00
Disclosure

SEC source: 0001457612-18-000086 · wf-form4_153756019707841.xml · derivative · entry 1

Meisner Derek M · CIK 0001752461 · SENIOR VP AND GENERAL COUNSEL

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200,000

Underlying: Common Stock · 200,000 shares

Expires 2028-09-20

F1 · derivative.exercise_date: The Stock Option shall become exercisable as to 25% of the maximum number of shares on September 10, 2019, and as to an additional 2.0833% of the total number of shares on each monthly anniversary thereafter

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.