------------------------------ OMB APPROVAL ------------------------------ OMB Number: 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response.........0.5 ------------------------------ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP 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 |_| Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). (Print of Type Responses) -------------------------------------------------------------------------------- 1. Name and Address of Reporting Person* Hummel Brad A. -------------------------------------------------------------------------------- (Last) (First) (Middle) 1301 Capital of Texas Highway, Suite C-300 -------------------------------------------------------------------------------- (Street) Austin Texas 78746 -------------------------------------------------------------------------------- (City) (State) (Zip) -------------------------------------------------------------------------------- 2. Issuer Name and Ticker or Trading Symbol Prime Medical Services, Inc. (PMSI) -------------------------------------------------------------------------------- 3. I.R.S. Identification Number of Reporting Person, if an entity (voluntary) -------------------------------------------------------------------------------- 4. Statement for Month/Day/Year October 31, 2002 -------------------------------------------------------------------------------- 5. If Amendment, Date of Original (Month/Day/Year) -------------------------------------------------------------------------------- 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) |X| Director |_| 10% Owner |X| Officer (give title below) |_| Other (specify below) Chief Executive Officer ------------------------------------------------------------------- -------------------------------------------------------------------------------- 7. Individual or Joint/Group Filing (Check Applicable line) |X| Form Filed by One Reporting Person |_| Form Filed by More than One Reporting Person -------------------------------------------------------------------------------- ================================================================================ Table I -- Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned ================================================================================

5. Amount of 6. 4. 5.Securities Owner- Securities Acquired (A) or ~~Amount~~Beneficially of ship 2A. 3. Disposed of (D) ~~Securities~~Owned Form: 7. 2. Deemed Transaction (Instr. 3, 4 and 5) ~~Beneficially~~Following Direct Nature of 2.Trans- Execution Code ------------------------------- ~~Owned~~Reported ~~at End~~ (D) or Indirect 1. ~~Transaction~~action Date, if (Instr. 8) (A) ofTransaction(s) ~~Month~~ Indirect Beneficial Title of Security Date any ------------ ~~Amount~~ or ~~Price~~ (Instr. 3 & (I) Ownership (Instr. 3) (mm/dd/yy) (mm/dd/yy) Code V Amount (D) ~~and~~Price Instr.4) (Instr.4) (Instr. 4) ------------------------------------------------------------------------------------------------------------------------------------ Common ~~stock~~Stock 810/2731/02 SP 151,000 DA 10$8.5400 52,666 D ------------------------------------------------------------------------------------------------------------------------------------ ~~Common stock 8/28/02 S 15,000 D 10.21 29,773 D~~ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ====================================================================================================================================

FORM 4 (continued) Table II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) ================================================================================

9. Number 10. ~~Number~~of Owner- ofderiv- ship ative Form 2. ~~Deriv~~Secur- of Conver- 5. 7. ~~ative~~ities Deriv- 11. sion Number of Title and Amount ~~Secur~~Bene- ative Nature ofor Derivative 6. of Underlying 8. ~~ities~~ficially Secur- of Exer- 3A. 4. Securities Date Securities Price ~~Bene-~~Owned ity: In- cise 3.Deemed Trans- Acquired (A) Exercisable and (Instr. 3 and 4) of ~~ficially~~Follow- Direct direct Price ~~Trans~~3. Execut- action or Disposed Expiration Date ---------------- Deriv- ~~Owned~~ing (D) or Bene- 1. of ~~action~~Trans- ion Code of(D) (Month/Day/Year) Amount ative atReported ~~End~~ In- ficial Title of Deriv- action Date if (Instr. (Instr. 3, ---------------- or Secur- ofTrans- direct Owner- Derivative ative ~~(Month/~~Date any 8) 4 and 5) Date Expira- Number ity ~~Month~~action(s) (I) ship Security Secur- ~~Day~~(mm/dd/ (mm/dd/ ------ ------------ Exer- tion of (Instr. (Instr. (Instr. (Instr. (Instr. 3) ity ~~Year~~yy) yy) Code V (A) (D) cisable Date Title Shares 5) 4) 4) 4) ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ ====================================================================================================================================

Explanation of Responses: /s/:Brad A. Hummel 10/31/02 --------------------------------------------- ----------------------- **Signature of Reporting Person Date Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. * 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). Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. Page 2

Filing Compare · PRIME MEDICAL SERVICES INC /TX/