INDEMNIFICATION AGREEMENT

Exhibit 10.16

INDEMNIFICATION AGREEMENT

     THIS INDEMNIFICATION AGREEMENT (“Agreement”) is made and entered into as of the ______ day of _________, 20___, by and between A. M. Castle & Co., a Maryland corporation (the “Company”), and _____________________ (“Indemnitee”).

     WHEREAS, at the request of the Company, Indemnitee currently serves as a [director] [and] [officer] of the Company and may, therefore, be subjected to claims, suits or proceedings arising as a result of his service; and

     WHEREAS, as an inducement to Indemnitee to continue to serve as such [director] [and] [officer], the Company has agreed to indemnify and to advance expenses and costs incurred by Indemnitee in connection with any such claims, suits or proceedings, to the maximum extent permitted by law; and

     WHEREAS, the parties by this Agreement desire to set forth their agreement regarding indemnification and advance of expenses;

     NOW, THEREFORE, in consideration of the premises and the covenants contained herein, the Company and Indemnitee do hereby covenant and agree as follows:

     Section 1. Definitions . For purposes of this Agreement:

     (a) “Change in Control” means a change in control of the Company occurring after the Effective Date of a nature that would be required to be reported in response to Item 6(e) of Schedule 14A of Regulation 14A (or in response to any similar item on any similar schedule or form) promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), whether or not the Company is then subject to such reporting requirement; provided, however, that, without limitation, such a Change in Control shall be deemed to have occurred if, after the Effective Date (i) any “person” (as such term is used in Sections 13(d) and 14(d) of the Exchange Act) other than Simpson Estates is or becomes the “beneficial owner” (as defined in Rule 13d-3 under the Exchange Act), directly or indirectly, of securities of the Company representing more than 25% of the combined voting power of all of the Company’s then-outstanding securities entitled to vote generally in the election of directors, without the prior approval of at least a majority of the members of the Board of Directors in office immediately prior to such person’s attaining such percentage interest; (ii) the Company is a party to a merger, consolidation, sale of assets, plan of liquidation or other reorganization not approved by at least a majority of the members of the Board of Directors then in office, as a consequence of which members of the Board of Directors in office immediately prior to such transaction or event constitute less than a majority of the Board of Directors thereafter; or (iii) at any time, a majority of the members of the Board of Directors are not individuals (A) who were directors as of the Effective Date or (B) whose election by the Board of Directors or nomination for election by the Company’s stockholders was approved by the affirmative vote of at least a majority of the directors then in office who

were directors as of the Effective Date or whose election for nomination for election was previously so approved.

     (b) “Corporate Status” means the status of a person as a present or former director, officer, employee or agent of the Company or as a director, trustee, officer, partner, manager, managing member, fiduciary, employee or agent of any other foreign or domestic corporation, partnership, limited liability company, joint venture, trust, employee benefit plan or other enterprise that such person is or was serving in such capacity at the request of the Company. As a clarification and without limiting the circumstances in which Indemnitee may be serving at the request of the Company, service by Indemnitee shall be deemed to be at the request of the Company if Indemnitee serves or served as a director, trustee, officer, partner, manager, managing member, fiduciary, employee or agent of any corporation, partnership, limited liability company, joint venture, trust, employee benefit plan or other enterprise (i) of which a majority of the voting power or equity interest is owned directly or indirectly by the Company or (ii) the management of which is controlled directly or indirectly by the Company.

     (c) “Disinterested Director” means a director of the Company who is not and was not a party to the Proceeding in respect of which indemnification and/or advance of Expenses is sought by Indemnitee.

     (d) “Effective Date” means the date set forth in the first paragraph of this Agreement.

     (e) “Expenses” means any and all reasonable and out-of-pocket attorneys’ fees and costs, retainers, court costs, transcript costs, fees of experts, witness fees, travel expenses, duplicating costs, printing and binding costs, telephone charges, postage, delivery service fees, federal, state, local or foreign taxes imposed on Indemnitee as a result of the actual or deemed receipt of any payments under this Agreement, ERISA excise taxes and penalties and any other disbursements or expenses incurred in connection with prosecuting, defending, preparing to prosecute or defend, investigating, being or preparing to be a witness in or otherwise participating in a Proceeding. Expenses shall also include Expenses incurred in connection with any appeal resulting from any Proceeding including, without limitation, the premium, security for and other costs relating to any cost bond supersede as bond or other appeal bond or its equivalent.

     (f) “Independent Counsel” means a law firm, or a member of a law firm, that is experienced in matters of corporation law and neither is, nor in the past five years has been, retained to represent: (i) the Company or Indemnitee in any matter material to either such party (other than with respect to matters concerning Indemnitee under this Agreement or of other indemnitees under similar indemnification agreements), or (ii) any other party to or participant or witness in the Proceeding giving rise to a claim for indemnification or advance of Expenses hereunder. Notwithstanding the foregoing, the term “Independent Counsel” shall not include any person who, under the applicable standards of professional conduct then prevailing, would have a conflict of interest in representing either the Company or Indemnitee in an action to determine Indemnitee’s rights under this Agreement.

     (g) “Proceeding” means any threatened, pending or completed action, suit, arbitration, alternate dispute resolution mechanism, investigation, inquiry, administrative hearing or any other proceeding, whether brought by or in the right of the Company or otherwise and whether of a civil (including intentional or unintentional tort claims), criminal, administrative or investigative (formal or informal) nature, including any appeal therefrom, except one pending or completed on or before the Effective Date, unless otherwise specifically agreed in writing by the Company and Indemnitee. If Indemnitee reasonably believes that a given situation may lead to or culminate in the institution of a Proceeding, such situation shall also be considered a Proceeding.

     Section 2. Services by Indemnitee . Indemnitee will serve as a [director] [and] [officer] of the Company. However, this Agreement shall not impose any independent obligation on Indemnitee or the Company to continue Indemnitee’s service to the Company. This Agreement shall not be deemed an employment contract between the Company (or any other entity) and Indemnitee.

     Section 3. General . The Company shall indemnify, and advance Expenses to, Indemnitee (a) as provided in this Agreement and (b) otherwise to the maximum extent permitted by Maryland law in effect on the Effective Date and as amended from time to time; provided, however, that no change in Maryland law shall have the effect of reducing the benefits available to Indemnitee hereunder based on Maryland law as in effect on the Effective Date. The rights of Indemnitee provided in this Section 3 shall include, without limitation, the rights set forth in the other sections of this Agreement, including any additional indemnification permitted by Section 2-418(g) of the Maryland General Corporation Law (the “MGCL”) and any additional indemnification provided in the Company’s Bylaws.

     Section 4. Standard for Indemnification . If, by reason of Indemnitee’s Corporate Status, Indemnitee is, or is threatened to be, made a party to any Proceeding, Indemnitee shall be indemnified against all judgments, penalties, fines and amounts paid in settlement and all Expenses actually and reasonably incurred by him or on his behalf in connection with any such Proceeding unless it is established that (a) the act or omission of Indemnitee was material to the matter giving rise to the Proceeding and (i) was committed in bad faith or (ii) was the result of active and deliberate dishonesty, (b) Indemnitee actually received an improper personal benefit in money, property or services or (c) in the case of any criminal Proceeding, Indemnitee had reasonable cause to believe that his conduct was unlawful.

     Section 5. Certain Limits on Indemnification. Notwithstanding any other provision of this Agreement (other than Section 6), Indemnitee shall not be entitled to:

     (a) indemnification hereunder if the Proceeding was one by or in the right of the Company and Indemnitee is adjudged to be liable to the Company;

     (b) indemnification hereunder if Indemnitee is adjudged to be liable on the basis that personal benefit was improperly received in any Proceeding charging improper personal benefit to Indemnitee, whether or not involving action in the Indemnitee’s Corporate Status; or

     (c) indemnification or advance of Expenses hereunder if the Proceeding was brought by Indemnitee unless: (i) the Proceeding was brought to enforce indemnification

under this Agreement, and then only to the extent in accordance with and as authorized by Section 12 of this Agreement, or (ii) the Company’s charter or Bylaws, a resolution of the stockholders entitled to vote generally in the election of directors or of the Board of Directors or an agreement approved by the Board of Directors to which the Company is a party expressly provide otherwise.

     Section 6. Court-Ordered Indemnification . Notwithstanding any other provision of this Agreement, a court of appropriate jurisdiction, upon application of Indemnitee and such notice as the court shall require, may order indemnification in the following circumstances:

     (a) if it determines Indemnitee is entitled to reimbursement under Section 2-418(d)(1) of the MGCL, the court shall order indemnification, in which case Indemnitee shall be entitled to recover the Expenses of securing such reimbursement; or

     (b) if it determines that Indemnitee is fairly and reasonably entitled to indemnification in view of all the relevant circumstances, whether or not Indemnitee (i) has met the standards of conduct set forth in Section 2-418(b) of the MGCL or (ii) has been adjudged liable for receipt of an improper personal benefit under Section 2-418(c) of the MGCL, the court may order such indemnification as the court shall deem proper. However, indemnification with respect to any Proceeding by or in the right of the Company or in which liability shall have been adjudged in the circumstances described in Section 2-418(c) of the MGCL shall be limited to Expenses.

     Section 7. Indemnification for Expenses of a Party Who is Wholly or Partly Successful . Notwithstanding any other provision of this Agreement, and without limiting any such provision, to the extent that Indemnitee was or is, by reason of his Corporate Status, made a party to (or otherwise becomes a participant in) any Proceeding and is successful, on the merits or otherwise, in the defense of such Proceeding, Indemnitee shall be indemnified for all Expenses actually and reasonably incurred by him or on his behalf in connection therewith. If Indemnitee is not wholly successful in such Proceeding but is successful, on the merits or otherwise, as to one or more but less than all claims, issues or matters in such Proceeding, the Company shall indemnify Indemnitee under this Section 7 for all Expenses actually and reasonably incurred by him or on his behalf in connection with each such claim, issue or matter, allocated on a reasonable and proportionate basis. For purposes of this Section 7 and, without limitation, the termination of any claim, issue or matter in such a Proceeding by dismissal, with or without prejudice, shall be deemed to be a successful result as to such claim, issue or matter.

     Section 8. Advance of Expenses for a Party . If, by reason of Indemnitee’s Corporate Status, Indemnitee is, or is threatened to be, made a party to any Proceeding, the Company shall, without requiring a preliminary determination of Indemnitee’s ultimate entitlement to indemnification hereunder, advance all reasonable Expenses incurred by or on behalf of Indemnitee in connection with such Proceeding within ten days after the receipt by the Company of a statement or statements requesting such advance or advances from time to time, whether prior to or after final disposition of such Proceeding. Such statement or statements shall reasonably evidence the Expenses incurred by Indemnitee and shall include or be preceded or accompanied by a written affirmation by Indemnitee of Indemnitee’s good faith belief that the standard of conduct necessary for indemnification by the Company as authorized by law and by this

Agreement has been met and a written undertaking by or on behalf of Indemnitee, in substantially the form attached hereto as Exhibit A or in such form as may be required under applicable law as in effect at the time of the execution thereof, to reimburse the portion of any Expenses advanced to Indemnitee relating to claims, issues or matters in the Proceeding as to which it shall ultimately be established that the standard of conduct has not been met by Indemnitee and which have not been successfully resolved as described in Section 7 of this Agreement. To the extent that Expenses advanced to Indemnitee do not relate to a specific claim, issue or matter in the Proceeding, such Expenses shall be allocated on a reasonable and proportionate basis. The undertaking required by this Section 8 shall be an unlimited general obligation by or on behalf of Indemnitee and shall be accepted without reference to Indemnitee’s financial ability to repay such advanced Expenses and without any requirement to post security therefor.

     Section 9. Indemnification and Advance of Expenses of a Witness . Notwithstanding any other provision of this Agreement, to the extent that Indemnitee is or may be, by reason of his Corporate Status, made a witness or otherwise asked to participate in any Proceeding, whether instituted by the Company or any other party, and to which Indemnitee is not a party, he shall be advanced all reasonable Expenses and indemnified against all Expenses actually and reasonably incurred by him or on his behalf in connection therewith within ten days after the receipt by the Company of a statement or statements requesting such advance or advances from time to time, whether prior to or after final disposition of such Proceeding. Such statement or statements shall reasonably evidence the Expenses incurred by Indemnitee.

     Section 10. Procedure for Determination of Entitlement to Indemnification .

     (a) To obtain indemnification under this Agreement, Indemnitee shall submit to the Company a written request, including therein or therewith such documentation and information as is reasonably available to Indemnitee and is reasonably necessary to determine whether and to what extent Indemnitee is entitled to indemnification. Indemnitee may submit one or more such requests from time to time and at such time(s) as Indemnitee deems appropriate in his sole discretion. The officer of the Company receiving any such request from Indemnitee shall, promptly upon receipt of such a request for indemnification, advise the Board of Directors in writing that Indemnitee has requested indemnification.

     (b) Upon written request by Indemnitee for indemnification pursuant to Section 10(a) above, a determination, if required by applicable law, with respect to Indemnitee’s entitlement thereto shall promptly be made in the specific case: (i) if a Change in Control shall have occurred, by Independent Counsel, in a written opinion to the Board of Directors, a copy of which shall be delivered to Indemnitee, which Independent Counsel shall be selected by the Indemnitee and approved by the Board of Directors in accordance with Section 2-418(e)(2)(ii) of the MGCL, which approval will not be unreasonably withheld; or (ii) if a Change in Control shall not have occurred, (A) by the Board of Directors by a majority vote of a quorum consisting of Disinterested Directors or, if such a quorum cannot be obtained,