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person · Reporting owner

Mostafa Adam S.

Disclosed activity across 2 companies

Tapewire entity
83195
SEC CIK
0001738081

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Abpro CorpABP · Entity 166815Chief Financial OfficerMay 10, 2018May 10, 2018
X4 Pharmaceuticals, IncXFOR · Entity 5638Chief Financial OfficerFebruary 12, 2025February 14, 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.

Abpro Corp

Report date May 10, 2018 · Filed May 10, 2018

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $2.22 · Expires 2026-12-05DirectNot disclosed Reported balance Holding disclosure · report date 2018-05-10 · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · Balance Not disclosed

F1: (i) 41,637 of the shares underlying the option vested and became exercisable on September 6, 2017 and (ii) the remaining shares shall vest and become exercisable in 36 substantially equal monthly installments thereafter, subject to the Reporting Person providing continuous service to the Issuer on each such date.

Filing footnotes · ownership attribution and instrument terms

F1: (i) 41,637 of the shares underlying the option vested and became exercisable on September 6, 2017 and (ii) the remaining shares shall vest and become exercisable in 36 substantially equal monthly installments thereafter, subject to the Reporting Person providing continuous service to the Issuer on each such date.

X4 Pharmaceuticals, Inc

Report date February 12, 2025 · Filed February 14, 2025

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect850,000 Reported balance After 2025-02-12 transaction · row 1
1 source row

Row 1 · 2025-02-12 · Grant · Acquired 850,000 · Balance 850,000

F1: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in three equal annual installments on February 12, 2026, February 12, 2027 and February 12, 2028, subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

Filing footnotes · ownership attribution and instrument terms

F1: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in three equal annual installments on February 12, 2026, February 12, 2027 and February 12, 2028, subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

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
February 12, 2025 Filed Feb 14, 2025 16:08 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantCommon Stock 850,000 $0.00 $0.00
Disclosure

SEC source: 0001628280-25-005702 · wk-form4_1739567322.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 850,000

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in three equal annual installments on February 12, 2026, February 12, 2027 and February 12, 2028, subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

Read SEC document
January 24, 2025 Filed Jan 27, 2025 18:15 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 74,773 $0.45 $33,946.94
Disclosure

SEC source: 0001628280-25-002708 · wk-form4_1738019736.xml · nonDerivative · entry 2

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F2 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 28, 2024.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $0.447 to $0.47, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, 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 set forth in this footnote.

Read SEC document
January 23, 2025 Filed Jan 27, 2025 18:15 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantCommon Stock 74,773 $0.00 $0.00
Disclosure

SEC source: 0001628280-25-002708 · wk-form4_1738019736.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,773

F1 · shares: Represents shares earned upon the vesting of performance-based restricted stock units. The Compensation Committee of the Board of Directors of the Issuer certified the achievement of a performance condition, which occurred upon the acceptance by the European Medicines Agency of the Issuer's Marketing Authorization Application for mavorixafor for the treatment of WHIM syndrome.

Read SEC document
October 07, 2024 Filed Oct 8, 2024 16:44 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 230,645 $0.55 $126,900.88
Disclosure

SEC source: 0001628280-24-042545 · wk-form4_1728420276.xml · nonDerivative · entry 2

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F2 · shares: These transactions were made pursuant to a rule 10b5-1 trading plan adopted by the Reporting Person on June 28, 2024.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $0.5144 to $0.6036, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, 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 set forth in this footnote.

Read SEC document
October 04, 2024 Filed Oct 8, 2024 16:44 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantCommon Stock 230,645 $0.00 $0.00
Disclosure

SEC source: 0001628280-24-042545 · wk-form4_1728420276.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 230,645

F1 · shares: Represents shares earned upon the vesting of performance-based restricted stock units. The Compensation Committee of the Board of Directors of the Issuer certified the achievement of the performance condition.

Read SEC document
March 11, 2024 Filed Mar 11, 2024 17:19 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 52,500 $0.88 $46,347.00
Disclosure

SEC source: 0001628280-24-010279 · wk-form4_1710191979.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $0.8649 to $0.9147, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, 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 set forth in this footnote.

Read SEC document
February 13, 2024 Filed Feb 16, 2024 17:10 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantStock Appreciation Right · Derivative 523,414 $0.00 Strike: $0.92 $0.00
Disclosure

SEC source: 0001628280-24-005384 · wk-form4_1708121388.xml · derivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 523,414

Underlying: Common Stock · 523,414 shares

Expires 2034-02-13

F1 · derivative.exercise_date: The Stock Appreciation Right will vest and become exercisable in equal annual installments (rounding down to the nearest whole share, except for the last installment) on the first, second, and third anniversaries of February 13, 2024, subject to the Reporting Person remaining an employee of the Issuer through and including each applicable vesting date.

Read SEC document
February 12, 2024 Filed Feb 12, 2024 17:03 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 27,721 $1.01 $27,973.26
Disclosure

SEC source: 0001628280-24-004263 · wk-form4_1707775417.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,500

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 23, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $0.97 to $1.07, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, 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 set forth in this footnote.

Read SEC document
November 01, 2023 Filed Nov 3, 2023 16:42 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 230,645 $0.73 $168,370.85
Disclosure

SEC source: 0001628280-23-036758 · wk-form4_1699044122.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 80,221

F1 · kind: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 23, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.6835 to $0.7911, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, 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 set forth in this footnote.

Read SEC document
October 31, 2023 Filed Nov 2, 2023 17:04 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantCommon Stock 230,645 $0.00 $0.00
Disclosure

SEC source: 0001628280-23-036471 · wk-form4_1698959058.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 310,866

F1 · shares: Represents shares earned upon the vesting of performance-based restricted stock units. The Compensation Committee of the Board of Directors of the Issuer certified the achievement of a performance condition, which occurs upon FDA acceptance of a new drug application for mavorixafor.

Read SEC document
June 30, 2023 Filed Jul 5, 2023 16:04 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 2,641 $1.89 $4,991.49
Disclosure

SEC source: 0001628280-23-024228 · wk-form4_1688587453.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,221

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.84 to $1.95 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 · balance_after: Represents restricted stock units.

Read SEC document
June 23, 2023 Filed Jun 26, 2023 16:13 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 5,417 $1.93 $10,454.81
Disclosure

SEC source: 0001628280-23-023443 · wk-form4_1687810394.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,862

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.90 to $1.96 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 · balance_after: Represents restricted stock units.

Read SEC document
June 15, 2023 Filed Jun 16, 2023 16:17 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 5,417 $2.22 $12,025.74
Disclosure

SEC source: 0001628280-23-022473 · wk-form4_1686946623.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,279

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $2.14 to $2.39, 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 · balance_after: Represents restricted stock units.

Read SEC document
March 10, 2023 Filed Mar 13, 2023 16:50 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 52,500 $0.84 $44,100.00
Disclosure

SEC source: 0001628280-23-007722 · wf-form4_167874064200077.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,696

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $0.82 to $0.90, 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 · balance_after: Represents restricted stock units.

Read SEC document
February 13, 2023 Filed Feb 15, 2023 17:12 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 27,721 $0.93 $25,780.53
Disclosure

SEC source: 0001628280-23-003757 · wf-form4_167649914450211.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 146,196

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $0.91 to $0.98, 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 · balance_after: Represents restricted stock units.

Read SEC document
November 07, 2022 Filed Nov 9, 2022 16:22 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantStock Appreciation Right · Derivative 1,350,000 $0.00 Strike: $1.80 $0.00
Disclosure

SEC source: 0001628280-22-029261 · wf-form4_166802894353588.xml · derivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,350,000

Underlying: Common Stock · 1,350,000 shares

Expires 2032-11-07

F1 · derivative.exercise_date: The Stock Appreciation Right will vest and become exercisable in equal annual installments (rounding down to the nearest whole share, except for the last installment) on the first, second, and third anniversaries of November 7, 2022, subject to the Reporting Person remaining an employee of the Issuer through and including each applicable vesting date.

Read SEC document
August 17, 2022 Filed Aug 19, 2022 13:04 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 10,834 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-22-023323 · wf-form4_166092864529306.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 173,917

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.150 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 · balance_after: Represents unvested restricted stock units.

Read SEC document
June 30, 2022 Filed Jul 1, 2022 17:01 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 2,641 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-22-018400 · wf-form4_165670924581616.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 184,751

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $0.88 to $0.92, 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 · balance_after: Represents unvested restricted stock units.

Read SEC document
June 24, 2022 Filed Jun 27, 2022 16:14 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 5,416 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-22-018047 · wf-form4_165636087288621.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 187,392

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.06 to $1.11, 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 · balance_after: Represents unvested restricted stock units.

Read SEC document
June 16, 2022 Filed Jun 17, 2022 16:22 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 5,416 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-22-017438 · wf-form4_165549734296466.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 192,808

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.03 to $1.13, 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 · balance_after: Represents unvested restricted stock units.

Read SEC document
March 01, 2022 Filed Mar 1, 2022 16:09 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantCommon Stock 105,000 $0.00 $0.00
Disclosure

SEC source: 0001628280-22-004497 · wf-form4_164616893696670.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 198,224

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in two equal annual installments on March 1, 2023 and March 1, 2024, subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Represents unvested restricted stock units.

Read SEC document
February 11, 2022 Filed Feb 14, 2022 16:23 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 27,721 Not disclosed Not disclosed
Disclosure

SEC source: 0001628280-22-002511 · wf-form4_164487375572326.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,224

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $1.52 to $1.74, 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 · balance_after: Represents unvested restricted stock units.

Read SEC document
August 17, 2021 Filed Aug 19, 2021 16:26 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 10,832 $5.10 $55,243.20
Disclosure

SEC source: 0001628280-21-017333 · wf-form4_162940478600346.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 120,945

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $4.98 to $5.35, 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 · balance_after: Represents unvested restricted stock units.

Read SEC document
June 30, 2021 Filed Jul 1, 2021 08:18 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 2,641 $6.64 $17,536.24
Disclosure

SEC source: 0001628280-21-013299 · wf-form4_162514188426351.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 131,777

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $6.50 to $6.78, 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 · balance_after: Represents unvested restricted stock units.

Read SEC document
June 24, 2021 Filed Jun 25, 2021 16:03 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 5,417 $7.01 $37,973.17
Disclosure

SEC source: 0001628280-21-012933 · wf-form4_162465141949892.xml · nonDerivative · entry 2

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 134,418

F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $6.89 to $7.28, 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.

F4 · balance_after: Represents unvested restricted stock units.

Read SEC document
June 23, 2021 Filed Jun 25, 2021 16:03 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantCommon Stock 16,250 $0.00 $0.00
Disclosure

SEC source: 0001628280-21-012933 · wf-form4_162465141949892.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 139,835

F1 · shares: Represents restricted stock units issued to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer and has no expiration date. One third of the shares underlying the restricted stock unit award vested on June 23, 2021. One third of the shares will vest on June 23, 2022, and one third of the shares will vest on June 23, 2023, subject to the Reporting Person providing continuous service to the Issuer on such dates. Shares in respect of the vested portion of the award must be delivered no later than March 15 of the calendar year following the year in which vesting occurs.

Read SEC document
June 15, 2021 Filed Jun 17, 2021 17:13 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 5,417 $7.84 $42,469.28
Disclosure

SEC source: 0001628280-21-012477 · wf-form4_162396433610629.xml · nonDerivative · entry 2

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 123,585

F2 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $7.74 to $8.20, 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.

F4 · balance_after: Represents unvested restricted stock units.

Read SEC document
June 15, 2021 Filed Jun 17, 2021 17:13 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantCommon Stock 16,250 $0.00 $0.00
Disclosure

SEC source: 0001628280-21-012477 · wf-form4_162396433610629.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,002

F1 · shares: Represents restricted stock units issued to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer and has no expiration date. One third of the shares underlying the restricted stock unit award vested on June 15, 2021. One third of the shares will vest on June 15, 2022, and one third of the shares will vest on June 15, 2023, subject to the Reporting Person providing continuous service to the Issuer on such dates. Shares in respect of the vested portion of the award must be delivered no later than March 15 of the calendar year following the year in which vesting occurs.

Read SEC document
March 24, 2021 Filed Mar 25, 2021 17:09 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantCommon Stock 83,163 $0.00 $0.00
Disclosure

SEC source: 0001628280-21-005667 · wf-form4_161670655632254.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,752

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's Amended and Restated 2017 Equity Incentive Plan with each restricted stock unit representing the right to receive one share of common stock on the applicable vesting date. No amount was paid upon the grant of the restricted stock units. The restricted stock units vest in three equal annual installments on February 11, 2022, February 11, 2023 and February 11, 2024 subject to the Reporting Person continuing to provide service as an employee of the Issuer through such date.

F2 · balance_after: Represents unvested restricted stock units.

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September 21, 2020 Filed Sep 22, 2020 16:11 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 10,834 $7.08 $76,704.72
Disclosure

SEC source: 0001628280-20-013832 · wf-form4_160080547296478.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,589

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $7.01 to $7.18, 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 · balance_after: Represents unvested restricted stock units.

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August 17, 2020 Filed Aug 18, 2020 20:16 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantCommon Stock 16,250 $0.00 $0.00
Disclosure

SEC source: 0001628280-20-012846 · wf-form4_159779615491282.xml · nonDerivative · entry 2

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,423

F3 · shares: Represents restricted stock units issued to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer and has no expiration date. One third of the shares underlying the restricted stock unit award vested on August 17, 2020. One third of the shares will vest on August 17, 2021, and one third of the shares will vest on August 17, 2022, subject to the Reporting Person providing continuous service to the Issuer on such dates. Shares in respect of the vested portion of the award must be delivered no later than March 15 of the calendar year following the year in which vesting occurs.

F4 · balance_after: Of the shares of common stock reported, 29,589 shares represent unvested restricted stock units.

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August 14, 2020 Filed Aug 18, 2020 20:16 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantCommon Stock 16,250 $0.00 $0.00
Disclosure

SEC source: 0001628280-20-012846 · wf-form4_159779615491282.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,173

F1 · shares: Represents restricted stock units issued to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer and has no expiration date. One third of the shares underlying the restricted stock unit award vested on August 14, 2020. One third of the shares will vest on August 14, 2021, and one third of the shares will vest on August 14, 2022, subject to the Reporting Person providing continuous service to the Issuer on such dates. Shares in respect of the vested portion of the award must be delivered no later than March 15 of the calendar year following the year in which vesting occurs.

F2 · balance_after: Of the shares of common stock reported, 18,756 Shares represent unvested restricted stock units.

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June 30, 2020 Filed Jul 1, 2020 16:10 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 Tax withholdingCommon Stock 916 $9.32 $8,537.12
Disclosure

SEC source: 0001628280-20-010103 · wf-form4_159363420470551.xml · nonDerivative · entry 2

Mostafa Adam S. · CIK 0001738081 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,923

F3 · shares: Shares withheld by X4 Pharmaceuticals Inc. to satisfy taxes payable in connection with the vesting of previously awarded restricted stock units.

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June 30, 2020 Filed Jul 1, 2020 16:10 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 SaleCommon Stock 1,725 $9.04 $15,594.00
Disclosure

SEC source: 0001628280-20-010103 · wf-form4_159363420470551.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,839

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

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $8.54 to $9.19, 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.

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June 17, 2019 Filed Jun 19, 2019 16:16 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantStock Option (right to buy) · Derivative 15,847 $0.00 Strike: $14.75 $0.00
Disclosure

SEC source: 0000899243-19-017421 · doc4.xml · derivative · entry 2

Mostafa Adam S. · CIK 0001738081 · CFO and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,847

Underlying: Common Stock · 15,847 shares

Expires 2029-06-17

F3 · derivative.exercise_date: 25% of the shares subject to the option shall vest on June 17, 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.

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June 17, 2019 Filed Jun 19, 2019 16:16 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantCommon Stock 10,564 $0.00 $0.00
Disclosure

SEC source: 0000899243-19-017421 · doc4.xml · nonDerivative · entry 1

Mostafa Adam S. · CIK 0001738081 · CFO and Treasurer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,564

F1 · shares: Grant of restricted stock units to the Reporting Person under the Issuer's 2017 Equity Incentive Plan, with each restricted stock unit representing the contingent right to receive one share of common stock on the applicable vesting date. No amount was paid upon grant of the units. The restricted stock units vest in four equal annual installments on June 30, 2020, June 30, 2021, June 30, 2022 and June 30, 2023, subject to the Reporting Person continuing to provide services through each such date.

F2 · balance_after: Represents unvested restricted stock units.

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March 13, 2019 Filed Mar 14, 2019 21:28 UTC X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantStock Option (right to buy) · Derivative 62,633 Not disclosed Strike: $10.44 Not disclosed
Disclosure

SEC source: 0000899243-19-007821 · doc4.xml · derivative · entry 1

Mostafa Adam S. · CIK 0001738081 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 62,633

Underlying: Common Stock · 62,633 shares

Expires 2028-10-03

F2 · price: Reflects the Reporting Person's stock option to acquire 659,067 shares of X4 common stock for $0.99 per share that was assumed by the Issuer in the merger of Artemis AC Corp., a wholly-owned subsidiary of the Issuer, with and into X4 Therapeutics, Inc. (formerly X4 Pharmaceuticals, Inc.) ("X4") on March 13, 2019 (the "Merger").

F1 · derivative.exercise_date: Twenty-five percent (25%) of the shares subject to the option vested on October 4, 2019, and one thirty-sixth (1/36th) of the remaining shares subject to the option shall vest each month thereafter, subject to the Reporting Person continuing to provide service through each such date.

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March 13, 2019 Filed Mar 15, 2019 16:39 UTC Amendment X4 Pharmaceuticals, Inc XFOR · Entity 5638 GrantStock Option (right to buy) · Derivative 62,633 Not disclosed Strike: $10.44 Not disclosed
Disclosure

SEC source: 0000899243-19-007975 · doc4a.xml · derivative · entry 1

Mostafa Adam S. · CIK 0001738081 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 62,633

Underlying: Common Stock · 62,633 shares

Expires 2028-10-03

F2 · price: Reflects the Reporting Person's stock option to acquire 659,067 shares of X4 common stock for $0.99 per share that was assumed by the Issuer in the merger of Artemis AC Corp., a wholly-owned subsidiary of the Issuer, with and into X4 Therapeutics, Inc. (formerly X4 Pharmaceuticals, Inc.) ("X4") on March 13, 2019 (the "Merger").

F1 · derivative.exercise_date: Twenty-five percent (25%) of the shares subject to the option shall vest on September 5, 2019, and one thirty-sixth (1/36th) of the remaining shares subject to the option shall vest each month thereafter, subject to the Reporting Person continuing to provide service through each such date. This amendment is being filed solely to correct the vesting schedule of the option included in the Form 4 filed on March 14, 2019.

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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.