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Sievers Eric

Disclosed activity across 1 company

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SEC CIK
0001835116

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
BioAtla, Inc.BCAB · Entity 879Chief Medical OfficerAugust 31, 2026September 02, 2026

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.

BioAtla, Inc.

Report date August 31, 2026 · Filed September 02, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect11,346 Reported balance After 2026-08-31 transaction · row 1
1 source row

Row 1 · 2026-08-31 · Tax withholding · Disposed 134 · Balance 11,346

F1: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Filing footnotes · ownership attribution and instrument terms

F1: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported 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
August 31, 2026 Filed Sep 2, 2026 21:28 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 134 $1.69 $226.46
Disclosure

SEC source: 0001193125-26-380486 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,346

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
May 31, 2026 Filed Jun 5, 2026 20:30 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 134 $3.93 $526.62
Disclosure

SEC source: 0001193125-26-259689 · ownership.xml · nonDerivative · entry 2

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,840

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

F2 · balance_after: Effective on April 6, 2026, the Issuer effected a 50-for-1 share consolidation of its common stock (the "Share Consolidation"). The amount of securities reported on this Form 4 has been adjusted to reflect the Share Consolidation.

Read SEC document
March 11, 2026 Filed Jun 5, 2026 20:30 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 360 $0.17 $60.84
Disclosure

SEC source: 0001193125-26-259689 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,614

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

F2 · balance_after: Effective on April 6, 2026, the Issuer effected a 50-for-1 share consolidation of its common stock (the "Share Consolidation"). The amount of securities reported on this Form 4 has been adjusted to reflect the Share Consolidation.

Read SEC document
March 10, 2026 Filed Mar 12, 2026 20:08 UTC BioAtla, Inc. BCAB · Entity 879 GrantCommon Stock 240,000 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-104136 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 598,705

F1 · shares: Represents shares of Common Stock underlying a time-based restricted stock unit award ("RSU"). The RSU will vest as to 25% of the total number of shares on March 10, 2027, and thereafter, 6.25% of the total number of shares subject to the RSU shall vest on the last day of each May, August, November and February, subject to the reporting person's continued service through the applicable vesting date.

Read SEC document
February 28, 2026 Filed Mar 2, 2026 23:13 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 3,140 $0.25 $775.58
Disclosure

SEC source: 0001193125-26-085966 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 358,705

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
November 30, 2025 Filed Dec 1, 2025 23:35 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 2,729 $0.90 $2,467.02
Disclosure

SEC source: 0001193125-25-304173 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 361,845

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
August 31, 2025 Filed Sep 2, 2025 23:08 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 2,729 $0.46 $1,243.06
Disclosure

SEC source: 0000950170-25-112615 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 364,574

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
May 31, 2025 Filed Jun 3, 2025 20:31 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 2,729 $0.41 $1,116.16
Disclosure

SEC source: 0000950170-25-080990 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 367,303

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
March 11, 2025 Filed Mar 13, 2025 20:11 UTC BioAtla, Inc. BCAB · Entity 879 GrantCommon Stock 175,000 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-038741 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 370,032

F1 · shares: Represents shares of Common Stock underlying a time-based restricted stock unit award ("RSU"). The RSU will vest as to 25% of the total number of shares on March 11, 2026, and thereafter, 6.25% of the total number of shares subject to the RSU shall vest on the last day of each May, August, November and February so long as the reporting person remains a service provider.

Read SEC document
February 15, 2025 Filed Feb 25, 2025 01:31 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 12,530 $0.46 $5,763.80
Disclosure

SEC source: 0000950170-25-025968 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 195,032

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
August 31, 2024 Filed Sep 3, 2024 21:14 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 572 $1.77 $1,012.44
Disclosure

SEC source: 0000950170-24-102924 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 207,562

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
July 31, 2024 Filed Aug 1, 2024 21:09 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 572 $1.81 $1,035.32
Disclosure

SEC source: 0000950170-24-089419 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 208,134

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
June 30, 2024 Filed Jul 2, 2024 00:39 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 572 $1.37 $783.64
Disclosure

SEC source: 0000950170-24-079915 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 208,706

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
May 31, 2024 Filed Jun 1, 2024 00:07 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 572 $1.51 $863.72
Disclosure

SEC source: 0000950170-24-067577 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 209,278

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
April 30, 2024 Filed May 2, 2024 00:46 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 572 $2.26 $1,292.72
Disclosure

SEC source: 0000950170-24-051521 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 209,850

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
March 31, 2024 Filed Apr 1, 2024 21:01 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 572 $3.44 $1,967.68
Disclosure

SEC source: 0000950170-24-039478 · ownership.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,422

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
February 29, 2024 Filed Mar 1, 2024 21:19 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 572 $2.70 $1,544.40
Disclosure

SEC source: 0001209191-24-004156 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,994

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
February 15, 2024 Filed Feb 20, 2024 21:20 UTC BioAtla, Inc. BCAB · Entity 879 GrantCommon Stock 122,000 $0.00 $0.00
Disclosure

SEC source: 0001209191-24-003508 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,566

F1 · shares: Represents shares of Common Stock underlying a time-based restricted stock unit award ("RSU"). The RSU will vest as to 25% of the total number of shares on February 15, 2025, and the remainder in equal quarterly installments over the three years thereafter, subject to the reporting person's continued service through the applicable vesting date.

Read SEC document
January 31, 2024 Filed Feb 2, 2024 01:30 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 657 $1.92 $1,261.44
Disclosure

SEC source: 0001209191-24-002592 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,566

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
December 31, 2023 Filed Jan 4, 2024 01:17 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 555 $2.46 $1,365.30
Disclosure

SEC source: 0001209191-24-000596 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,223

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
November 30, 2023 Filed Dec 1, 2023 21:45 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 554 $1.77 $980.58
Disclosure

SEC source: 0001209191-23-057084 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,778

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
October 31, 2023 Filed Nov 2, 2023 01:17 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 555 $1.47 $815.85
Disclosure

SEC source: 0001209191-23-054063 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,332

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
September 30, 2023 Filed Oct 2, 2023 22:02 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 554 $1.70 $941.80
Disclosure

SEC source: 0001209191-23-051178 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,887

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
August 31, 2023 Filed Sep 2, 2023 00:02 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 555 $2.51 $1,393.05
Disclosure

SEC source: 0001209191-23-048032 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,441

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
July 31, 2023 Filed Aug 1, 2023 21:42 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 554 $2.99 $1,656.46
Disclosure

SEC source: 0001209191-23-044049 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,996

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

F2 · balance_after: Includes shares purchased under the Issuer's ESPP Plan.

Read SEC document
June 30, 2023 Filed Jul 3, 2023 21:43 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 555 $3.00 $1,665.00
Disclosure

SEC source: 0001209191-23-040664 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,527

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
May 31, 2023 Filed Jun 2, 2023 00:25 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 554 $3.15 $1,745.10
Disclosure

SEC source: 0001209191-23-033471 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,082

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
April 30, 2023 Filed May 2, 2023 22:02 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 555 $3.37 $1,870.35
Disclosure

SEC source: 0001209191-23-026659 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,636

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
March 31, 2023 Filed Apr 4, 2023 00:02 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 555 $2.68 $1,487.40
Disclosure

SEC source: 0001209191-23-022428 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,191

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
February 28, 2023 Filed Mar 1, 2023 23:30 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 554 $2.98 $1,650.92
Disclosure

SEC source: 0001209191-23-014288 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 92,746

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
February 09, 2023 Filed Mar 1, 2023 23:30 UTC BioAtla, Inc. BCAB · Entity 879 GrantEmployee Stock Option (right to buy) · Derivative 240,000 $0.00 Strike: $3.95 $0.00
Disclosure

SEC source: 0001209191-23-014288 · doc4.xml · derivative · entry 2

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 240,000

Underlying: Common Stock · 240,000 shares

Expires 2033-02-09

F2 · derivative.exercise_date: The option vests over a period of four years, with 25% of the shares underlying the option vesting on the first anniversary of the date of grant, and the remainder vesting in 36 substantially equal monthly installments thereafter, subject to the reporting person's continued service to the company through the applicable vesting dates.

Read SEC document
January 31, 2023 Filed Feb 3, 2023 00:08 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 654 $3.79 $2,478.66
Disclosure

SEC source: 0001209191-23-006430 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,300

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
December 31, 2022 Filed Jan 3, 2023 22:04 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 554 $8.25 $4,570.50
Disclosure

SEC source: 0001209191-23-000311 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,954

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
November 30, 2022 Filed Dec 2, 2022 02:00 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 555 $11.01 $6,110.55
Disclosure

SEC source: 0001209191-22-059265 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 94,508

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

F2 · balance_after: Includes shares purchased under the Issuer's ESPP Plan.

Read SEC document
October 31, 2022 Filed Nov 1, 2022 23:56 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 554 $6.89 $3,817.06
Disclosure

SEC source: 0001209191-22-055167 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,063

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
September 30, 2022 Filed Oct 4, 2022 23:56 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 555 $7.70 $4,273.50
Disclosure

SEC source: 0001209191-22-052565 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,617

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
August 31, 2022 Filed Sep 1, 2022 22:46 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 555 $8.71 $4,834.05
Disclosure

SEC source: 0001209191-22-048362 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,172

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
July 31, 2022 Filed Aug 1, 2022 22:22 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 554 $3.40 $1,883.60
Disclosure

SEC source: 0001209191-22-043740 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 86,727

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
June 30, 2022 Filed Jul 1, 2022 21:22 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 555 $2.85 $1,581.75
Disclosure

SEC source: 0001209191-22-040318 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,281

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

Read SEC document
May 31, 2022 Filed Jun 3, 2022 22:02 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 554 $2.41 $1,335.14
Disclosure

SEC source: 0001209191-22-034296 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,836

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

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April 30, 2022 Filed May 6, 2022 20:57 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 555 $3.48 $1,931.40
Disclosure

SEC source: 0001209191-22-027627 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,390

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

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March 31, 2022 Filed Apr 5, 2022 01:12 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 554 $5.00 $2,770.00
Disclosure

SEC source: 0001209191-22-022742 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,945

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

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February 28, 2022 Filed Mar 4, 2022 22:01 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 555 $6.48 $3,596.40
Disclosure

SEC source: 0001209191-22-016363 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,499

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

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February 21, 2022 Filed Feb 25, 2022 02:15 UTC BioAtla, Inc. BCAB · Entity 879 GrantEmployee Stock Option (right to buy) · Derivative 122,000 $0.00 Strike: $6.75 $0.00
Disclosure

SEC source: 0001209191-22-012938 · doc4.xml · derivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 122,000

Underlying: Common Stock · 122,000 shares

Expires 2032-02-21

F1 · derivative.exercise_date: The option vests over a period of four years, with 25% of the shares underlying the option vesting on February 21, 2023, the first anniversary of the date of grant, and the remainder vesting in 36 substantially equal monthly installments thereafter, subject to the reporting person's continued employment through the applicable vesting dates.

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January 31, 2022 Filed Feb 2, 2022 22:41 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 657 $9.56 $6,280.92
Disclosure

SEC source: 0001209191-22-006497 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,054

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

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December 31, 2021 Filed Jan 6, 2022 01:31 UTC BioAtla, Inc. BCAB · Entity 879 Tax withholdingCommon Stock 795 $19.63 $15,605.85
Disclosure

SEC source: 0001209191-22-002039 · doc4.xml · nonDerivative · entry 1

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 90,711

F1 · kind: This transaction is not a sale of shares by the Reporting Person. Instead, this represents shares that have been withheld by the Issuer to satisfy its income tax and withholding and remittance obligations in connection with the vesting and net settlement of previously reported restricted stock units.

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December 02, 2021 Filed Dec 7, 2021 22:41 UTC BioAtla, Inc. BCAB · Entity 879 SaleCommon Stock 16 $22.47 $359.54
Disclosure

SEC source: 0001209191-21-068384 · doc4.xml · nonDerivative · entry 8

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,506

F1 · kind: Represents shares of the Issuer's common stock sold by the reporting person to cover taxes due upon the release and settlement of the vested RSUs.

F9 · price: The range of prices for the shares of Common Stock is from $22.40 to $22.51. The reporting person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, full information regarding the number of securities sold at each separate price.

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December 02, 2021 Filed Dec 7, 2021 22:41 UTC BioAtla, Inc. BCAB · Entity 879 SaleCommon Stock 804 $21.74 $17,479.76
Disclosure

SEC source: 0001209191-21-068384 · doc4.xml · nonDerivative · entry 7

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,522

F1 · kind: Represents shares of the Issuer's common stock sold by the reporting person to cover taxes due upon the release and settlement of the vested RSUs.

F8 · price: The range of prices for the shares of Common Stock is from $21.40 to $22.37. The reporting person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, full information regarding the number of securities sold at each separate price.

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December 01, 2021 Filed Dec 7, 2021 22:41 UTC BioAtla, Inc. BCAB · Entity 879 SaleCommon Stock 21 $24.22 $508.70
Disclosure

SEC source: 0001209191-21-068384 · doc4.xml · nonDerivative · entry 6

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 92,326

F1 · kind: Represents shares of the Issuer's common stock sold by the reporting person to cover taxes due upon the release and settlement of the vested RSUs.

F7 · price: The range of prices for the shares of Common Stock is from $23.80 to $24.68. The reporting person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, full information regarding the number of securities sold at each separate price.

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December 01, 2021 Filed Dec 7, 2021 22:41 UTC BioAtla, Inc. BCAB · Entity 879 SaleCommon Stock 96 $23.27 $2,233.54
Disclosure

SEC source: 0001209191-21-068384 · doc4.xml · nonDerivative · entry 5

Sievers Eric · CIK 0001835116 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 92,347

F1 · kind: Represents shares of the Issuer's common stock sold by the reporting person to cover taxes due upon the release and settlement of the vested RSUs.

F6 · price: The range of prices for the shares of Common Stock is from $22.79 to $23.77. The reporting person undertakes that he will provide, upon request by the staff of the U.S. Securities and Exchange Commission, full information regarding the number of securities sold at each separate price.

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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.