![Donald Seibel](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Donald Seibel
Director/Board Member at
ACNB CORPORATION
Net worth: 1 M $ as of 2026-05-30
Profile
Donald Arthur Seibel is currently Director at ACNB Corp.
since 2017.
He is also Director, EVP, Chief Lending & Revenue Officer at ACNB Bank since 2017.
Additionally, he serves as Chief Financial Officer at INEOS Pigments USA, Inc. Formerly, Mr. Seibel was Chairman at New Windsor Bancorp, Inc. and New Windsor State Bank from 2001 to 2017.
He was Non-Executive Director at Tronox Mining Australia Ltd. from 2011 to 2012.
He served as Managing Director at Banque CIC (Suisse) AG and Cristal Inorganic Chemicals Schweiz AG from 2011 to 2014.
Other former roles include Principal at Lyondell Petrochemical LP, Inc. and Pricewaterhouse LLP, Chief Financial Officer at The National Titanium Dioxide Co. Ltd. and Cristal Global, and Chief Operating Officer at Springdale Preparatory School LLC.
Education includes undergraduate studies at Gettysburg College and an MBA from the University of Houston.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
ACNB CORPORATION 0.19% | 2026-03-12 | 19,177 ( 0.19% ) | 1 M $ | 2026-05-30 |
Donald Seibel active positions
| Companies | Position | Start |
|---|---|---|
| ACNB CORPORATION | Director/Board Member | 2017-06-30 |
INEOS Pigments USA, Inc.
 INEOS Pigments USA, Inc. Chemicals: SpecialtyProcess Industries Manufactures and distributes inorganic chemical products | Director of Finance/CFO | 2011-07-25 |
ACNB Bank
 ACNB Bank Regional BanksFinance State chartered commercial bank | Director/Board Member | 2017-06-30 |
Former positions of Donald Seibel
| Companies | Position | End |
|---|---|---|
Springdale Preparatory School LLC
 Springdale Preparatory School LLC Other Consumer ServicesConsumer Services Springdale Preparatory School LLC is a fully accredited coeducational boarding and day school serving grades six through twelve. The private company is based in New Windsor, MD. The school emphasizes individualized instruction, small class sizes, and a supportive community among a diverse international student body. It offers over 130 courses, including AP, honors, dual enrollment, and independent study options, along with cultural outings and student services such as college counseling, SAT preparation, and scholarship assistance. Athletics are included with programs in basketball, soccer, cross country, track, cheerleading, and more, focusing on sportsmanship and safety. Graduation requirements include community service and a senior capstone project. | Chief Operating Officer | 2019-12-31 |
New Windsor State Bank
 New Windsor State Bank Regional BanksFinance Provides banking services | Chairman | 2016-12-31 |
New Windsor Bancorp, Inc.
 New Windsor Bancorp, Inc. Regional BanksFinance Operates as a bank holding company whose subsidiary provides banking services | Chairman | 2016-12-31 |
Banque CIC (Suisse) AG
 Banque CIC (Suisse) AG Investment ManagersFinance Banque CIC SA (Suisse) is a conservative investment manager focused on long-term capital preservation. The bank customizes their investment approach to their clients' profile. Focused on market trends, their investment strategy is defined by a committee and revised periodically. The bank's own assets are invested in fixed-income, hedging interest risks with swaps and futures. Their investment processes are either active or passive. Their CIC/CIAL family of funds tracks the indexes of major stock and bond markets. Banque CIC SA (Suisse) manages multi-manager portfolios invested in their own funds, in third-party structured products and funds (equity, bond and money-market funds), as well as in alternative investments and ETFs. Some of the bank's multi-manager portfolios exclude in-house products. Research is performed in-house and supplemented with third-party analysis. | Corporate Officer/Principal | 2013-12-31 |
Cristal Inorganic Chemicals Schweiz AG
 Cristal Inorganic Chemicals Schweiz AG Wholesale DistributorsDistribution Services Provides distribution, accounting, procurement, and sales services to Cristal Group | Director of Finance/CFO | 2013-12-31 |
Training of Donald Seibel
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
42
1st degree connections
15
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 15 |
|---|---|
ACNB Corp.
 ACNB Corp. Regional BanksFinance Operates as a bank holding company through its subsidiary provides banking services | Finance |
Lyondell Petrochemical LP, Inc.
 Lyondell Petrochemical LP, Inc. Chemicals: SpecialtyProcess Industries Engages in the manufacture of basic organic chemicals | Process Industries |
Tronox Mining Australia Ltd.
 Tronox Mining Australia Ltd. Other Metals/MineralsNon-Energy Minerals Explores and develops placer heavy mineral sands | Non-Energy Minerals |
Pricewaterhouse LLP
 Pricewaterhouse LLP Miscellaneous Commercial ServicesCommercial Services Provides accounting services | Commercial Services |
Banque CIC (Suisse) AG
Banque CIC (Suisse) AG Investment ManagersFinance Banque CIC SA (Suisse) is a conservative investment manager focused on long-term capital preservation. The bank customizes their investment approach to their clients' profile. Focused on market trends, their investment strategy is defined by a committee and revised periodically. The bank's own assets are invested in fixed-income, hedging interest risks with swaps and futures. Their investment processes are either active or passive. Their CIC/CIAL family of funds tracks the indexes of major stock and bond markets. Banque CIC SA (Suisse) manages multi-manager portfolios invested in their own funds, in third-party structured products and funds (equity, bond and money-market funds), as well as in alternative investments and ETFs. Some of the bank's multi-manager portfolios exclude in-house products. Research is performed in-house and supplemented with third-party analysis. | Finance |
Gettysburg College
 Gettysburg College Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of Houston
 University of Houston Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
New Windsor Bancorp, Inc.
New Windsor Bancorp, Inc. Regional BanksFinance Operates as a bank holding company whose subsidiary provides banking services | Finance |
The National Titanium Dioxide Co. Ltd.
 The National Titanium Dioxide Co. Ltd. Chemicals: SpecialtyProcess Industries Manufactures titanium dioxide | Process Industries |
ACNB Bank
ACNB Bank Regional BanksFinance State chartered commercial bank | Finance |
Cristal Global
 Cristal Global Other Metals/MineralsNon-Energy Minerals Produces titanium dioxide and titanium chemicals | Non-Energy Minerals |
New Windsor State Bank
New Windsor State Bank Regional BanksFinance Provides banking services | Finance |
INEOS Pigments USA, Inc.
INEOS Pigments USA, Inc. Chemicals: SpecialtyProcess Industries Manufactures and distributes inorganic chemical products | Process Industries |
Cristal Inorganic Chemicals Schweiz AG
Cristal Inorganic Chemicals Schweiz AG Wholesale DistributorsDistribution Services Provides distribution, accounting, procurement, and sales services to Cristal Group | Distribution Services |
Springdale Preparatory School LLC
Springdale Preparatory School LLC Other Consumer ServicesConsumer Services Springdale Preparatory School LLC is a fully accredited coeducational boarding and day school serving grades six through twelve. The private company is based in New Windsor, MD. The school emphasizes individualized instruction, small class sizes, and a supportive community among a diverse international student body. It offers over 130 courses, including AP, honors, dual enrollment, and independent study options, along with cultural outings and student services such as college counseling, SAT preparation, and scholarship assistance. Athletics are included with programs in basketball, soccer, cross country, track, cheerleading, and more, focusing on sportsmanship and safety. Graduation requirements include community service and a senior capstone project. | Consumer Services |
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