FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * SAFEGUARD SCIENTIFICS INC   2. Issuer Name and Ticker or Trading Symbol TENGION INC [TNGN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 435 DEVON PARK DRIVE, BLDG. 800 3. Date of Earliest Transaction (Month/Day/Year) 04/14/2010 (Street) WAYNE, PA 19087-1945 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 04/14/2010   C   284,198 A (1) 589,198 I By SDI (2)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Series C Convertible Preferred Stock

(1)

04/14/2010

C

4,120,879

(3)

(3)

Common Stock

284,198

(1)

0

I

By SDI (2)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SAFEGUARD SCIENTIFICS INC 435 DEVON PARK DRIVE, BLDG. 800 WAYNE, PA 19087-1945	X

Signatures

By: Brian J. Sisko SVP & General Counsel For: Safeguard Scientifics, Inc.		04/15/2010
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Subject to certain conditions, immediately prior to the closing of the Issuer's initial public offering, each share of Series C Convertible Preferred Stock automatically converted into shares of Common Stock on a 14.5-to-1 basis, for no additional consideration.
(2)	The securities are indirectly owned by reporting person and are directly owned by Safeguard Delaware, Inc. ("SDI"), a wholly owned subsidiary of the reporting person. Reporting person may be deemed a director by virtue of the fact that Gary Kurtzman, Vice President and Managing Director, Life Sciences of reporting person, serves as reporting person's representative on Issuer's board.
(3)	These securities are Series C Convertible Preferred Stock of the Issuer and do not have an expiration date. Subject to certain conditions, immediately prior to the closing of the Issuer's initial public offering, each share of Series C Convertible Preferred Stock automatically converted into shares of Common Stock on a 14.5-to-1 basis.

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