Document:

<Page>

                                                                    Exhibit 4.1

                                 PLANETCAD INC.

               CERTIFICATE OF DESIGNATIONS, PREFERENCES AND RIGHTS

                                       OF

                      SERIES B CONVERTIBLE PREFERRED STOCK

                                  MAY 23, 2002

     PlanetCAD Inc., a Delaware corporation (the "CORPORATION"), does hereby
certify that pursuant to the authority contained in Article IV of the
Corporation's Restated Certificate of Incorporation (its "CERTIFICATE OF
INCORPORATION") and in accordance with the provisions of Section 151 of the
General Corporation Law of the State of Delaware, the Board of Directors of
the Corporation duly adopted the following resolution, which resolution
remains in full force and effect on the date hereof:

     RESOLVED, that, pursuant to the authority expressly granted to and
vested in the Board of Directors of the Corporation in accordance with the
provisions of its Certificate of Incorporation, a series of Preferred Stock
of the Corporation be and hereby is established, consisting of 1,202,463
shares, $0.01 par value per share, to be designated the "Series B Convertible
Preferred Stock" (the "SERIES B PREFERRED"); and that, subject to the
limitations provided by law and by the Certificate of Incorporation, the
voting powers, preferences and relative, participating, optional and other
special rights, and qualifications, limitations and restrictions thereof
shall be as follows:

     1.   CERTAIN DEFINITIONS

          (a)  "AVATECH MERGER" shall mean the proposed merger with Avatech
Solutions, Inc. pursuant to that certain Agreement and Plan of Merger dated May
1, 2002.

          (b)  "BOARD" shall mean the Board of Directors of the Corporation.

          (c)  "COMMON STOCK" shall mean the Common Stock, $.01 par value, of
the Corporation.

          (d)  "CORPORATION" shall mean PlanetCAD Inc., a Delaware corporation.

          (e)  "LIQUIDITY EVENT" shall mean (i) the liquidation, dissolution or
winding up of the Corporation, either voluntary or involuntary, (ii) the sale of
all or substantially all of the Corporation's assets or (iii) the participation
by the Corporation in any merger or consolidation with any other entity that
results in the holders of the Common Stock immediately before such transaction
(assuming the conversion of all convertible securities and the exercise of all
outstanding options) owning less than 51% of the combined entities (assuming the
conversion of

                                       1
<Page>

all convertible securities and the exercise of all outstanding options),
unless such transaction has been approved by holders of more than 50% of the
Series B Preferred; PROVIDED, HOWEVER, that under no circumstances will the
Avatech Merger be deemed a Liquidity Event.

          (f)  "ORIGINAL ISSUANCE DATE" for any share of the Series B Preferred
shall mean the date on which such share of the Series B Preferred was originally
issued.

          (g)  "ORIGINAL SERIES B ISSUANCE PRICE" shall mean $0.36 per share for
the Series B Preferred, as adjusted to reflect any stock splits, stock dividends
or other recapitalizations involving the Series B Preferred.

     2.   DIVIDENDS. Except as otherwise provided in SECTION 5 hereof, the
holders of Series B Preferred shall be entitled to receive, out of any funds
legally available therefor, dividends when, as and if declared by the Board,
at the rate of seven percent (7%) per annum of the Original Series B Issuance
Price, from the Original Issuance Date. Such dividends are (i) prior and in
preference to any declaration or payment of any dividend or other
distribution on Common Stock (other than a dividend payable in shares of
Common Stock) or on any other class or series of capital stock ranking junior
to the Series B Preferred with respect to dividends, (ii) PARI PASSU with any
other shares of Preferred Stock entitled to participate PARI PASSU with the
Series B Preferred with respect to dividends and (iii) subject to the rights
of any series of Preferred Stock that ranks, with respect to dividends,
senior to the Series B Preferred. Except as otherwise provided in SECTION 5
hereof, such dividends shall accrue on each share of Series B Preferred on a
daily basis from the Original Issuance Date whether or not earned or declared
and whether or not there shall be net assets or profits of the Corporation
legally available for the payment of such dividends. Such dividends shall be
cumulative, so that if such dividends with respect to any previous or current
dividend period at the rate provided for herein have not been paid on all
shares of Series B Preferred at the time outstanding, the deficiency shall be
fully paid on such shares before any distribution shall be paid on, or
declared and set apart for, Common Stock or any other class or series of
capital stock ranking junior to the Series B Preferred with respect to
dividends.

     3.   LIQUIDATION RIGHTS.

          (a)  In the event of a Liquidity Event, after payment or provision
for payment of the debts and other liabilities and obligations of the
Corporation, the holders of Series B Preferred shall be entitled to receive
for each share of Series B Preferred, prior and in preference to any
distribution of any of the assets or surplus funds of the Corporation to the
holders of Common Stock, and subject to the rights of any series of Preferred
Stock that ranks, on liquidation, senior to the Series B Preferred ("SENIOR
SECURITIES"), but PARI PASSU with any other shares of Preferred Stock under
the terms of which shall be entitled to participate PARI PASSU with the
Series B Preferred upon liquidation, by reason of their ownership thereof, an
amount equal to the Original Series B Issuance Price, plus an amount equal to
all accumulated but unpaid dividends thereon to and including the date full
payment is tendered to the Series B Preferred holders (collectively, the
"SERIES B PREFERENCE AMOUNT"). If upon the occurrence of such event the
assets and funds thus distributed among the holders of Series B Preferred and
any other shares of Preferred Stock entitled to participate PARI PASSU with
the Series B Preferred upon liquidation are insufficient to permit the
payment to such holders of their full preferential amount

                                       2
<Page>

described herein, then the entire assets and funds of the Corporation legally
available for distribution, after satisfaction of the rights of any Senior
Securities, shall be distributed ratably among the holders of the then
outstanding Series B Preferred and any other shares of Preferred Stock
entitled to participate PARI PASSU with the Series B Preferred upon
liquidation, in proportion to the preferential amount that each such holder
is otherwise entitled to receive.

          (b)  The Corporation shall not consummate any transaction deemed to
constitute a Liquidity Event until the provisions of this SECTION 3 have been
satisfied.

     4.   VOTING RIGHTS. Except as otherwise expressly provided herein or as
required by Delaware law, the holders of shares of Series B Preferred shall
be entitled to vote on all matters upon which holders of Common Stock have
the right to vote, and with respect to such vote shall be entitled to notice
of any stockholders' meeting in accordance with the bylaws of the Corporation
and applicable law, and shall be entitled to a number of votes equal to the
largest number of full shares of Common Stock into which such shares of
Series B Preferred could be converted, pursuant to the provisions of SECTION
5 hereof, at the record date for the determination of stockholders entitled
to vote on such matters or, if no such record date is established, at the
date such vote is taken or any written consent of stockholders is solicited.
Except as otherwise expressly provided herein or to the extent class or
series voting is otherwise required by law or agreement, the holders of
shares of the Series B Preferred and the Common Stock shall vote together as
a single class and not as separate classes on all matters. The Series B
Preferred shall not have cumulative voting rights.

     5.   CONVERSION. The outstanding shares of Series B Preferred shall be
convertible into Common Stock as follows:

          (a)  VOLUNTARY AND AUTOMATIC CONVERSION.

               (i)  VOLUNTARY CONVERSION. Each share of Series B Preferred
shall be convertible, at the option of the holder thereof, at any time after
the date of issuance of such share at the office of the Corporation or any
transfer agent for the Series B Preferred, into such number of fully paid and
nonassessable shares of Common Stock as is determined by dividing (A) the
Original Series B Issuance Price by (B) the Series B Conversion Price (as
hereinafter defined), as of the date of conversion.

               (ii) AUTOMATIC CONVERSION. Each share of Series B Preferred
shall be automatically converted into fully paid and nonassessable shares of
Common Stock, as provided herein, upon (A) the closing of the Avatech Merger
or (B) the Corporation's receipt of the written consent of the holders of not
less a majority of the then outstanding shares of Series B Preferred to the
conversion of all then outstanding Series B Preferred under this subsection.
Upon the occurrence of either such event, each share of Series B Preferred
shall be automatically converted into the number of fully paid and
nonassessable shares of Common Stock as is determined by dividing (A) the
Original Series B Issuance Price by (B) the Series B Conversion Price (as
hereinafter defined), as of the date of conversion. In the event of
conversion upon the Avatech Merger, the person(s) entitled to receive the
Common Stock issuable upon such

                                       3
<Page>

conversion of Series B Preferred shall be deemed to have converted such
Series B Preferred immediately prior to the closing of the Avatech Merger.

               (iii) CONVERSION PRICE. The "SERIES B CONVERSION PRICE" for
each share of Series B Preferred shall initially be the product of one-half
multiplied by the Original Series B Issuance Price, and shall be adjusted
from time to time as provided in this SECTION 5.

               (iv) NONACCRUAL OF DIVIDENDS. Notwithstanding anything to the
contrary in this Agreement, dividends that would have otherwise accrued on
each share of the Series B Preferred pursuant to SECTION 2 hereof shall not
accrue and shall not be paid to the holders of Series B Preferred upon
conversion thereof pursuant to this SECTION 5.

          (b)  MECHANICS OF CONVERSION.

               (i)  NO FRACTIONAL SHARES. No fractional shares of Common
Stock shall be issued upon conversion of shares of Series B Preferred. In
lieu of any fractional shares to which the holder would otherwise be
entitled, the holder shall be paid an amount in cash, rounded to the nearest
cent, determined by multiplying (i) the closing price per share of the Common
Stock as quoted on the American Stock Exchange on the conversion date by (ii)
the fractional interest to which such holder would otherwise be entitled.
Whether or not fractional shares are issuable upon such conversion shall be
determined on the basis of the total number of shares of Series B Preferred
the holder is at the time converting into Common Stock and the number of
shares of Common Stock issuable upon such aggregate conversion.

               (ii) VOLUNTARY CONVERSION. Each holder of Series B Preferred
who elects to convert the same into shares of Common Stock shall surrender
the certificate or certificates therefor, duly endorsed, or written notice of
the loss or destruction thereof and an executed indemnity agreement
reasonably satisfactory to the Corporation, at the office of the Corporation
or any transfer agent for the Series B Preferred or Common Stock, and shall
give written notice to the Corporation at such office that such holder elects
to convert the same and shall state therein the number of shares of Series B
Preferred being converted and the name or names in which the certificate or
certificates for shares of Common Stock are to be issued. The Corporation
shall, as soon as practicable thereafter, issue and deliver to such holder of
Series B Preferred, or to the nominee of such holder, a certificate or
certificates for the number of shares of Common Stock to which such holder is
entitled and a check payable to such holder in an amount equal to the amount,
if any, payable in lieu of the issuance of fractional shares of Common Stock.
Such conversion shall be deemed to have been made immediately prior to the
close of business on the date of such surrender of the Series B Preferred to
be converted, and the person or persons entitled to receive the shares of
Common Stock issuable upon such conversion shall be treated for all purposes
as the record holder or holders of such shares of Common Stock on such date.

               (iii) AUTOMATIC CONVERSION. Upon occurrence of any event
specified in SECTION 5(a)(ii)(A) or (B), the outstanding shares of Series B
Preferred shall be converted into Common Stock automatically without the need
for any further action by the holder of such shares and whether or not the
certificates representing such shares are surrendered to the

                                       4
<Page>

Corporation or its transfer agent; PROVIDED, HOWEVER, that the Corporation
shall not be obligated to issue certificates evidencing the shares of Common
Stock issuable upon such conversion unless the certificates evidencing such
shares of Series B Preferred, or written notice of the loss or destruction
thereof and an executed indemnity agreement reasonably satisfactory to the
Corporation, are delivered to the Corporation or its transfer agent as
provided below. Upon the surrender of certificates representing such shares,
or such written notice and executed indemnity agreement, at the office of the
Corporation or any transfer agent for the Series B Preferred or Common Stock,
the Corporation shall, as soon as practicable thereafter, issue and deliver
to such holder of Series B Preferred, or to the nominee of such holder, a
certificate or certificates for the number of shares of Common Stock to which
such holder is entitled and a check payable to such holder in an amount equal
to the amount, if any, payable in lieu of the issuance of fractional shares
of Common Stock. All rights with respect to shares of Series B Preferred
shall forthwith terminate upon occurrence of the event specified in SECTION
5(a)(ii)(A) or (B), except only the right of the holders of such shares to
receive Common Stock and the cash payment, if any, upon surrender of their
certificates for such shares of Series B Preferred.

          (c)  ADJUSTMENT FOR STOCK SPLITS AND COMBINATIONS. If the
Corporation shall at any time or from time to time after the Original
Issuance Date effect a subdivision of the outstanding shares of Common Stock
into a greater number of shares of Common Stock, the applicable Series B
Conversion Price then in effect immediately before that subdivision shall be
proportionately decreased; conversely, if the Corporation shall at any time
or from time to time after the Original Issuance Date effect a combination of
the outstanding shares of Common Stock into a smaller number of shares of
Common Stock, the applicable Series B Conversion Price then in effect
immediately before the combination shall be proportionately increased. Any
adjustment under this SECTION 5(C) shall become effective at the time the
subdivision or combination becomes effective.

          (d)  ADJUSTMENT FOR CERTAIN DIVIDENDS AND DISTRIBUTIONS. In the
event the Corporation at any time or from time to time after the Original
Issuance Date shall make or issue, or fix a record date for the determination
of holders of Common Stock entitled to receive, a dividend or other
distribution payable in additional shares of Common Stock, then and in each
such event the applicable Series B Conversion Price then in effect shall be
decreased as of the time of such issuance or, in the event such a record date
shall have been fixed, as of the close of business on such record date, by
multiplying the applicable Series B Conversion Price then in effect by a
fraction;

               (1)  the numerator of which shall be the total number of
shares of Common Stock issued and outstanding immediately prior to the time
of such issuance or at the close of business on such record date; and

               (2)  the denominator of which shall be the total number of
shares of Common Stock issued and outstanding immediately prior to the time
of such issuance or at the close of business on such record date, plus the
number of shares of Common Stock issuable in payment of such dividend or
distribution;

                                       5
<Page>

PROVIDED, HOWEVER, that if such record date shall have been fixed and such
dividend is not fully paid or if such distribution is not fully made on the
date fixed therefor, the applicable Series B Conversion Price shall be
recomputed accordingly as of the close of business on such record date and
thereafter the Series B Conversion Price shall be adjusted pursuant to this
SECTION 5(d) as of the time of actual payment of such dividends or
distributions.

          (e)  ADJUSTMENT FOR RECLASSIFICATION, EXCHANGE OR SUBSTITUTION. If
the Common Stock shall be changed into or exchanged for the same or different
number of shares of any class or classes of stock of the Corporation, whether
by capital reorganization, reclassification or otherwise (other than a
subdivision or combination of shares of Common Stock provided for in SECTION
5(c)), then and in each such event the holder of each share of Series B
Preferred shall have the right thereafter to convert such share into the kind
and amounts of shares of stock and other securities and property receivable
upon such reorganization, reclassification or other change, by holders of the
numbers of shares of Common Stock into which such shares of Series B
Preferred might have been converted immediately prior to such reorganization,
reclassification or change, all subject to further adjustment as provided
herein or with respect to such other securities or property by the terms
thereof.

          (f)  ISSUANCE, TRANSFER OR SALE OF SHARES BELOW CONVERSION PRICE.

               (i)  SPECIAL DEFINITIONS. For purposes of this SECTION 5(f),
the following definitions shall apply:

                    (A)  "ADDITIONAL SHARES OF COMMON STOCK" shall mean all
shares of Common Stock issued (or, pursuant to SECTION 5(f)(iii) below,
deemed to be issued) by the Corporation after the Original Issuance Date,
other than:

                         (1)  shares of Common Stock issued or issuable upon
conversion of Preferred Stock or any other Convertible Security that was
issued on or before the date hereof or upon the exercise of any Option that
was issued on or before the date hereof;

                         (2)  shares of Common Stock issued or issuable as
compensation to employees, consultants, officers or directors of the Corporation
pursuant to any stock option, restricted stock or other equity compensation
plans or agreements, as approved by the Board;

                         (3)  shares of Common Stock issued upon a subdivision
or combination of shares of Common Stock as provided in SECTION 5(c) above or as
a dividend as provided in SECTION 5(d) above or securities issued pursuant to a
recapitalization or other event specified in SECTION 5(e) above;

                         (4)  shares of Common Stock issued or issuable in a
registered public offering;

                                       6

<Page>

                         (5)  shares of Common Stock or instruments
convertible or exercisable into shares of Common Stock issued to a financial
institution in connection with a credit facility or other debt financing, as
approved by the Board; and

                         (6)  shares of Common Stock or instruments
convertible or exercisable into shares of Common Stock of the Company issued
in connection with a merger, consolidation, acquisition or similar business
combination that has been approved by at least a majority of the then
outstanding Series B Preferred shares.

                    (B)  "CONVERTIBLE SECURITIES" shall mean any evidence of
indebtedness, shares or other securities convertible into or exchangeable for
Additional Shares of Common Stock.

                    (C)  "OPTIONS" shall mean rights, options or warrants to
subscribe for, purchase or otherwise acquire either Additional Shares of
Common Stock or Convertible Securities.

               (ii) ADJUSTMENT OF SERIES B CONVERSION PRICE UPON ISSUANCE OF
ADDITIONAL SHARES OF COMMON STOCK. If the Corporation issues Additional
Shares of Common Stock before conversion or redemption of the Series B
Preferred (including Additional Shares of Common Stock deemed to be issued
pursuant to SECTION 5(f)(iii) below) for a consideration per share less than
the Series B Conversion Price of any outstanding share of Series B Preferred
in effect on the date of and immediately prior to such issuance, then, in
each such event, the Series B Conversion Price of such share then in effect
shall be reduced, concurrently with such issuance, to a price determined by
multiplying such Series B Conversion Price by a fraction, (A) the numerator
of which shall be (1) the number of shares of Common Stock outstanding
immediately prior to such issuance plus (2) the number of shares of Common
Stock which the aggregate consideration received by the Corporation for the
total number of Additional Shares of Common Stock so issued would purchase at
such Series B Conversion Price in effect immediately prior to such issuance,
and (B) the denominator of which shall be (1) the number of shares of Common
Stock outstanding immediately prior to such issuance plus (2) the number of
such Additional Shares of Common Stock so issued. For the purpose of the
above calculation, the number of shares of Common Stock outstanding
immediately prior to such issuance shall be calculated as if all shares of
Series B Preferred and any other Convertible Securities had been fully
converted into shares of Common Stock immediately prior to such issuance and
all outstanding Options had been exercised.

               (iii) DEEMED ISSUANCE OF ADDITIONAL SHARES OF COMMON STOCK.

                     (A)  OPTIONS AND CONVERTIBLE SECURITIES. If the
Corporation, at any time or from time to time after the Original Issuance
Date, issues any Options or Convertible Securities or fixes a record date for
the determination of holders of any class of securities entitled to receive
any such Options or Convertible Securities, then the Corporation shall be
deemed to have issued Additional Shares of Common Stock as of the time of
such issuance or, if such a record date has been fixed, as of the close of
business on such record date, in the amount and for the consideration per
share provided herein.

                                       7
<Page>

                         (1)  NUMBER OF ADDITIONAL SHARES. The number of
shares of Additional Shares of Common Stock deemed issued with respect to
such Options or Convertible Securities shall be the maximum number of shares
(as set forth in the instrument relating thereto without regard to any
provisions contained therein for a subsequent adjustment of such number) of
Common Stock issuable upon the exercise of such Options and/or the conversion
or exchange of such Convertible Securities.

                         (2)  CONSIDERATION PER SHARE. The consideration per
share received by the Corporation for Additional Shares of Common Stock
deemed to have been issued pursuant to Options and Convertible Securities,
shall be determined by dividing: (1) the total amount, if any, received or
receivable by the Corporation as consideration for the issuance of such
Options or Convertible Securities, plus the minimum aggregate amount of
additional consideration (as set forth in the instruments relating thereto,
without regard to any provision contained therein for a subsequent adjustment
of such consideration) payable to the Corporation upon the exercise of such
Options or the conversion or exchange of such Convertible Securities, or in
the case of Options for Convertible Securities, the exercise of such Options
for Convertible Securities and the conversion or exchange of such Convertible
Securities, by (2) the maximum number of shares of Common Stock (as set forth
in the instruments relating thereto, without regard to any provision
contained therein for a subsequent adjustment of such number) issuable upon
the exercise of such Options or the conversion or exchange of such
Convertible Securities.

                    (B)  ADJUSTMENTS. In any such case in which Additional
Shares of Common Stock are deemed to be issued:

                         (1)  no further adjustment in the Series B
Conversion Price shall be made upon (a) the subsequent issue of Convertible
Securities or shares of Common Stock upon the exercise of such Options or (b)
the conversion or exchange of such Convertible Securities;

                         (2)  if such Options or Convertible Securities by
their terms provide, with the passage of time or otherwise, for any decrease
in the consideration payable to the Corporation, or increase in the number of
shares of Common Stock issuable upon the exercise, conversion or exchange
thereof, then the Series B Conversion Price computed upon the original
issuance thereof (or upon the occurrence of a record date with respect
thereto) and any subsequent adjustments based thereon shall, upon any such
increase or decrease becoming effective, be recomputed to reflect such
increase or decrease insofar as it affects such Options or the rights of
conversion or exchange under such Convertible Securities;

                         (3)  if such Options or Convertible Securities by
their terms provide, with the passage of time or otherwise, for any increase
in the consideration payable to the Corporation, or decrease in the number of
shares of Common Stock issuable, upon the exercise, conversion or exchange
thereof, then the Series B Conversion Price computed upon the original
issuance thereof (or upon the occurrence of a record date with respect
thereto) and any subsequent adjustments based thereon shall, upon any such
increase or decrease becoming effective, be recomputed to reflect such
increase or decrease insofar as it affects such Options or the rights of
conversion or exchange under such Convertible Securities;

                                       8
<Page>

                         (4)  if the conversion privilege or similar right
represented by any such Convertible Securities shall expire or be cancelled
or terminated without having been exercised, the Series B Conversion Price as
adjusted upon the original issuance of such Convertible Securities shall be
readjusted to the Series B Conversion Price that would have been in effect
had an adjustment been made on the basis that the only Additional Shares of
Common Stock deemed to be issued were the Additional Shares of Common Stock,
if any, actually issued or sold on the exercise of such conversion or similar
right with respect to such Convertible Securities, and such Additional Shares
of Common Stock, if any, were issued or sold for the consideration actually
received by the Corporation upon such exercise, plus the consideration, if
any, actually received by the Corporation, whether or not converted, for
issuing or selling the Convertible Securities; and

                         (5)  no readjustment pursuant to clause B above
shall have the effect of increasing the Series B Conversion Price above the
Series B Conversion Price that would be in effect if such Option or
Convertible Securities had not been issued.

               (iv) DETERMINATION OF CONSIDERATION. For purposes of this
SECTION 5(f), the consideration received by the Corporation for the issuance
of any Additional Shares of Common Stock shall:

                    (A)  insofar as it consists of cash, be computed at the
aggregate amount of cash received by the Corporation excluding amounts paid
or payable for accrued interest or accrued dividends;

                    (B)  insofar as it consists of property other than cash,
be computed at the fair value thereof at the time of such issuance, as
determined in good faith by the Board; and

                    (C)  if Additional Shares of Common Stock are issued
together with other shares or securities or other assets of the Corporation
for consideration that covers both, be the proportion of such consideration
so received, computed as provided in clauses (A) and (B) above, as determined
in good faith by the Board.

          (g)  CERTIFICATE AS TO ADJUSTMENTS. Upon the occurrence of each
adjustment or readjustment of the Series B Conversion Price pursuant to this
SECTION 5, the Corporation at its expense shall promptly compute such
adjustment or readjustment in accordance with the terms of this SECTION 5 and
furnish to each holder of Series B Preferred a certificate setting forth such
adjustment or readjustment and showing in detail the facts upon which such
adjustment or readjustment is based, including a statement of (i) the
consideration received or to be received by the Corporation for any
Additional Shares of Common Stock issued or sold or deemed to have been
issued or sold, (ii) the Series B Conversion Price at the time in effect for
the Series B Preferred, and (iii) the number of shares of Common Stock and
the type and amount, if any, or other property that at the time would be
received upon conversion of the Series B Preferred. Upon the written request
of any holder of Series B Preferred, the Corporation will as soon as
reasonably practicable provide to such holder a written statement of the
Series B Conversion

                                       9

<Page>

Price at the time in effect for the Series B Preferred and the number of
shares of Common Stock which at the time would be received upon conversion of
the Series B Preferred.

          (h)  RESERVATION OF STOCK ISSUABLE UPON CONVERSION. The Corporation
shall at all times reserve and keep available out of its authorized but
unissued shares of Common Stock, solely for the purpose of effecting the
conversion of the shares of the Series B Preferred, such number of its shares
of Common Stock as shall from time to time be sufficient to effect the
conversion of all outstanding shares of Series B Preferred. As a condition
precedent to the taking of any action which would cause an adjustment to the
Series B Conversion Price, the Corporation will take such corporate action as
may, in the opinion of its counsel, be necessary to increase its authorized
but unissued shares of Common Stock to such number of shares as shall be
sufficient in order that it may validly and legally issue the shares of its
Common Stock issuable based upon such adjusted Series B Conversion Price.

          (i)  PAYMENT OF TAXES. The Corporation will pay all taxes and other
governmental charges (other than taxes measured by the revenue or income of
the holders of the Series B Preferred) that may be imposed in respect of the
issue or delivery of shares of Common Stock upon conversion of the shares of
Series B Preferred.

          (j)  MINIMUM ADJUSTMENT. No adjustment of the Series B Conversion
Price shall be made in an amount less than $.001 per share; PROVIDED,
HOWEVER, that any adjustments which are not required to be made as a result
of the operation of this subsection shall be carried forward and shall be
taken into account in any subsequent adjustment.

     6.   REDEMPTION RIGHTS.

          (a)  On or after December 31, 2002, any holder of then outstanding
shares of Series B Preferred shall have the right to require that the
Corporation redeem up to all of such holder's then outstanding shares of
Series B Preferred. The redemption price per share of Series B Preferred
shall be the sum of (i) the Original Series B Issuance Price of such share
and (ii) all accrued but unpaid dividends on such share (the "REDEMPTION
PRICE"). If a holder of such Series B Preferred elects to exercise its rights
under this SECTION 6(a), such holder shall provide notice to the Corporation
of such election in accordance with SECTION 9. The notice to the Corporation
shall specify the number of shares to be redeemed by the Corporation and
shall include the original certificate(s) representing the shares of Series B
Preferred to be redeemed. Within thirty (30) days after receipt of the
foregoing, the Corporation shall pay the appropriate redemption amount by
check or wire transfer and shall return a certificate representing the number
of shares of Series B Preferred, if any, that were not redeemed.

          (b)  The Corporation shall redeem at the Redemption Price all shares
of Series B Preferred, if any, that are outstanding as of December 31, 2003. The
Corporation will pay the appropriate redemption amount by check or wire transfer
within thirty (30) days after the receipt of the certificate(s) representing the
shares of Series B Preferred then outstanding.

          (c)  If on the date that a redemption is requested or required to be
made the funds of the Corporation legally available for the redemption of shares
of Series B Preferred are

                                      10
<Page>

insufficient to redeem all of the shares of Series B Preferred to be redeemed
on such date, the holders of the shares to be redeemed shall share ratably in
any funds legally available for redemption of such shares.

          (d)  From and after the payment of the Redemption Price for shares
of Series B Preferred to be redeemed, all rights of the holders of Series B
Preferred with respect to such shares of Series B Preferred for which the
Redemption Price has been paid shall cease and such shares shall cease to be
outstanding, whether or not the certificate(s) representing such shares have
been received by the Corporation.

     7.   PROTECTIVE PROVISIONS. So long as any shares of Series B Preferred
remain outstanding, the Corporation shall not, without the vote or written
consent of the holders of at least a majority of the then outstanding shares
of Series B Preferred, voting as a single class:

          (a)  amend the Certificate of Incorporation or the bylaws of the
Corporation in any manner that would alter, change or repeal any of the
designations, powers, preferences and relative, participating, optional or
other special rights, and the qualifications, limitations and restrictions
thereof, of the Series B Preferred;

          (b)  create, authorize, issue, transfer or sell any equity security
(including without limitation any indebtedness convertible into or
exercisable for any equity security) senior to or on a parity with the Series
B Preferred as to any material terms, including without limitation dividend
rights, redemption rights or liquidation preferences; or

          (c)  effect any Liquidity Event.

     8.   NO REISSUANCE OF SERIES B PREFERRED. No share or shares of Series B
Preferred acquired by the Corporation by reason of redemption, purchase,
conversion or otherwise shall be reissued, and all such shares shall be
canceled, retired and eliminated from the shares which the Corporation shall
be authorized to issue.

     9.   NOTICES. Unless otherwise specified, any notice required by the
provisions of these designations shall be deemed given upon the earlier of
the following events: (a) personal delivery to the party to be notified, (b)
facsimile transmission to the party to be notified (with written or facsimile
confirmation of receipt), (c) delivery by an overnight express courier
service to the party to be notified (delivery, postage or freight charges
prepaid), or (d) on the third business day following deposit in the United
States Post Office (if sent by registered or certified mail, return receipt
requested, with delivery, postage or freight charges prepaid), addressed in
the case of notice to the holders of record of Series B Preferred to each
holder at such holder's address appearing on the books of the Corporation and
in the case of notice to the Corporation to the President at the principal
executive offices of the Corporation.

     10.  EXCLUSION OF OTHER RIGHTS. Except as may otherwise be required by
law, the shares of Series B Preferred shall not have any voting powers,
preferences and relative, participating, optional or other special rights,
other than those specifically set forth in this

                                      11

<Page>

resolution (as such resolution may be amended from time to time) and in the
Certificate of Incorporation of the Corporation.

     11.  HEADINGS OF SUBDIVISIONS. The headings of the various subdivisions
hereof are for convenience of reference only and shall not affect the
interpretation of any of the provisions hereof.

     12.  SEVERABILITY OF PROVISIONS.

          If any voting powers, preferences and relative, participating,
optional and other special rights of the Series B Preferred and
qualifications, limitations and restrictions thereof set forth in this
resolution (as such resolution may be amended from time to time) is held
invalid, unlawful or incapable of being enforced by reason of any rule of law
or public policy, all other voting powers, preferences and relative,
participating, optional and other special rights of Series B Preferred and
qualifications, limitations and restrictions thereof set forth in this
resolution (as so amended) that can be given effect without the invalid,
unlawful or unenforceable voting powers, preferences and relative,
participating, optional and other special rights of Series B Preferred and
qualifications, limitations and restrictions thereof shall, nevertheless,
remain in full force and effect, and no voting powers, preferences and
relative, participating, optional or other special rights of Series B
Preferred and qualifications, limitations and restrictions thereof herein set
forth shall be deemed dependent upon any other such voting powers,
preferences and relative, participating, optional or other special rights of
Series B Preferred and qualifications, limitations and restrictions thereof
unless so expressed herein.

                            [SIGNATURE PAGE FOLLOWS]

                                       12

<Page>

     IN WITNESS WHEREOF, this certificate is executed to be effective as of
the date first written above.

                                        PLANETCAD INC.

                                        By: /s/ Joy M. Godesiabois
                                            --------------------------
                                            Name: Joy M. Godesiabois
                                            Title: Chief Financial Officer,
                                                   Vice President and Secretary

                                       13<Page>

                                                                   Exhibit 10.1

            SERIES B PREFERRED STOCK PURCHASE AND EXCHANGE AGREEMENT

                                 PLANETCAD INC.

     This Series B Preferred Stock Purchase and Exchange Agreement (this
"AGREEMENT") is made and entered into as of the 24th day of May, 2002, by and
among PlanetCAD Inc., a Delaware corporation (the "COMPANY"), and each of the
entities identified on SCHEDULE 1 hereto (the "PURCHASERS").

                                    RECITALS

     A.   The Company and Purchasers are parties to that certain Registration
Rights Agreement dated February 18, 2000, pursuant to which the Company
agreed to register with the Securities and Exchange Commission (the "SEC")
under the Securities Act of 1933, as amended (the "SECURITIES ACT"), shares
of the Company's common stock, par value $0.01 per share ("COMMON STOCK"),
then held by Purchasers and shares of Common Stock issuable upon the exercise
of warrants then held by Purchasers (the "REGISTRATION RIGHTS AGREEMENT").

     B.   Section 2(c) of the Registration Rights Agreement provides that the
Company will pay Purchasers certain monetary penalties if agreed upon
milestones related to the registration of the covered securities are not
achieved.

     C.   The Purchasers have demanded, in the aggregate, payment of $432,888
from the Company pursuant to Section 2(c) of the Registration Rights
Agreement (the "PENALTY AMOUNT").

     D.   In exchange for the (i) Company's debt, if any, owed to the
Purchasers under Section 2(c) of the Registration Rights Agreement, (ii)
Purchasers' waiver of payment of the Penalty Amount, whether or not owed, and
(iii) Purchasers' release of the Company from any claims arising from or
related to Section 2(c) of the Registration Rights Agreement, the Company has
agreed to issue to Purchasers shares of the Company's Series B Convertible
Preferred Stock (the "SHARES"), pursuant to the terms and conditions
contained herein.

                                    AGREEMENT

     NOW THEREFORE, in consideration of the mutual covenants, agreements,
conditions, representations, and warranties contained in this Agreement, the
Company and Purchasers hereby each agree as follows:

<Page>

SECTION 1. THE EXCHANGE.

     1.1 AUTHORIZATION OF SHARES.

     1.2 On or prior to the Closing (as defined in Section 2 below), the
Company shall have authorized (a) the issuance of the Shares to Purchasers
and (b) the reservation of the shares of Common Stock issuable upon
conversion of the Shares (the "CONVERSION SHARES"). The Shares shall have the
rights, preferences, privileges and restrictions set forth in a certificate
of designations filed with the Secretary of State of the State of Delaware,
substantially in the form attached hereto as Exhibit A (the "CERTIFICATE").

     1.3 ISSUANCE AND EXCHANGE.

     Subject to the terms and conditions hereof, at the Closing the Company
hereby agrees to issue to each Purchaser that number of Shares set forth
opposite such Purchaser's name on SCHEDULE 1 hereto, at a purchase price
equal to the amount determined by multiplying two by the average of the
closing prices of the Common Stock on the American Stock Exchange for the ten
days prior to May 1, 2002, the day on which the parties agreed to enter into
and approved the transactions described herein, rounded to the nearest whole
number (which amount equals $0.36). In exchange for the issuance of the
Shares, each Purchaser agrees to (i) mark paid and canceled the Company's
debt, if any, owed to Purchaser under Section 2(c) of the Registration Rights
Agreement, (ii) waive payment of its portion of the Penalty Amount, whether
or not owed, (which amount is set forth opposite each Purchaser's name on
SCHEDULE 1) and (iii) release the Company from any claims arising from or
related to Section 2(c) of the Registration Rights Agreement, as set forth in
SECTION 6.3 hereof.

SECTION 2. CLOSING.

     The closing of the issuance and exchange of the Shares under this Agreement
(the "CLOSING") shall take place at 9:00 a.m. on May 24, 2002, at the offices of
Hogan & Hartson L.L.P., 1470 Walnut Street, Suite 200, Boulder Colorado 80302,
or at such other time or place as the Company and Purchasers may mutually agree
(such date is hereinafter referred to as the "CLOSING DATE"). At the Closing,
subject to the terms and conditions hereof, the Company will deliver to each
Purchaser a certificate representing the number of Shares set forth opposite
such Purchaser's name on SCHEDULE 1, against delivery to the Company of this
executed Agreement.

SECTION 3. REPRESENTATIONS AND WARRANTIES OF THE COMPANY.

     The Company hereby represents and warrants to each Purchaser as follows:

                                       2
<Page>

     3.1 ORGANIZATION, GOOD STANDING AND QUALIFICATION. The Company is a
corporation duly organized, validly existing and in good standing under the
laws of the State of Delaware. The Company has all requisite corporate power
and authority to own and operate its properties and assets, to execute and
deliver this Agreement and to file the Certificate (collectively, the
"FINANCING DOCUMENTS"), to issue and sell the Shares, to carry out the
provisions of the Financing Documents, and to carry on its business as
presently conducted. The Company is duly qualified and is authorized to do
business and is in good standing in each jurisdiction in which the nature of
its activities and of its properties (both owned and leased) makes such
qualification necessary, except for those jurisdictions in which failure to
do so would not have a material adverse effect on the Company or its business.

     3.2 CAPITALIZATION. The authorized capital stock of the Company, as of
the date hereof and immediately prior to the Closing, consists of (a)
22,500,000 shares of Common Stock, of which 12,443,545 (does not include
50,000 shares of Common Stock held in escrow) shares are issued and
outstanding, of which 4,120,101 shares are reserved for issuance to
employees, directors and consultants pursuant to the Company's equity
incentive plans, and of which 1,807,500 shares are reserved for issuance
pursuant to warrant rights, prior acquisitions and other matters and (b)
2,500,000 shares of Preferred Stock, of which 100,000 shares are designated
Series A Junior Participating Preferred Stock, none of which are issued and
outstanding, and 1,202,463 are designated Series B Preferred Stock, none of
which are issued and outstanding. All issued and outstanding shares of the
Company's Common Stock (i) have been duly authorized and validly issued, (ii)
are fully paid and nonassessable, and (iii) were issued in compliance with
all applicable state and federal laws concerning the issuance of securities.
The rights, preferences, privileges and restrictions of the Shares are as
stated in the Certificate. The Conversion Shares have been duly and validly
reserved for issuance. When issued in compliance with the provisions of this
Agreement and the Certificate, and upon receipt of the consideration
therefor, the Shares and the Conversion Shares will be validly issued, fully
paid and nonassessable, and will be free of any liens or encumbrances;
PROVIDED, HOWEVER, that the Shares and the Conversion Shares may be subject
to restrictions on transfer under state and federal securities laws.

     3.3 AUTHORIZATION. All corporate action on the part of the Company, its
officers, directors and stockholders necessary for the authorization of the
Financing Documents, the performance of all obligations of the Company
thereunder, and the authorization, sale, issuance and delivery of the Shares
and Conversion Shares thereto have been taken or will be taken prior to the
Closing. This Agreement, when executed and delivered, will be a valid and
binding obligation of the Company enforceable against the Company in
accordance with its terms, except as limited by (a) applicable bankruptcy,
insolvency, reorganization, moratorium or other laws of general application
affecting enforcement of creditors' rights, (b) general principles of equity
that restrict the availability of equitable remedies, and (c) applicable law
related to the enforceability of the indemnification provisions set forth in
SECTION 6 of this Agreement. The sale of the Shares and the subsequent
conversion of the Shares into Conversion Shares are not and will not be
subject to any preemptive rights or rights of first refusal that have not
been properly waived or complied with.

                                       3
<Page>

     3.4 SEC DOCUMENTS AND OTHER REPORTS. The Company has timely filed as of
the date hereof all documents required to be filed with the SEC since January
1, 2001 (the "COMPANY SEC DOCUMENTS"). As of their respective dates, the
Company SEC Documents complied in all material respects with the requirements
of the Securities Act or the Securities Exchange Act of 1934, as amended (the
"EXCHANGE ACT"), as the case may be, and, at the respective times they were
filed, none of the Company SEC Documents contained any untrue statement of a
material fact or omitted to state a material fact required to be stated
therein or necessary to make the statements therein, in light of the
circumstances under which they were made, not misleading. The consolidated
financial statements (including, in each case, any notes thereto) of Company
included in the Company SEC Documents complied as to form in all material
respects with applicable accounting requirements and the published rules and
regulations of the SEC with respect thereto, were prepared in accordance with
United States generally accepted accounting principles ("GAAP") (except, in
the case of the unaudited statements, as permitted by Form 10-QSB of the SEC)
applied on a consistent basis during the periods involved (except as may be
indicated therein or in the notes thereto) and fairly presented in all
material respects the consolidated financial position of Company and its
consolidated subsidiaries as at the respective dates thereof and the
consolidated results of their operations and their consolidated cash flows
for the periods then ended (subject, in the case of unaudited statements, to
normal year-end audit adjustments and to any other adjustments described
therein). Except as disclosed in the Company SEC Documents or as required by
GAAP, Company has not, since December 31, 2001, made any material change in
the accounting practices or policies applied in the preparation of financial
statements.

     3.5 COMPLIANCE WITH OTHER INSTRUMENTS. The Company is not in violation
of or default under (i) any term of its certificate of incorporation or
bylaws, (ii) any material provision of any mortgage, indenture, contract,
agreement, instrument or contract to which it is party or by which it is
bound, (iii) any judgment, decree, order, writ or, to the Company's
knowledge, or (iv) any statute, rule or regulation applicable to the Company,
which violation of or default under would materially and adversely affect the
business, assets, liabilities, financial condition, operations or prospects
of the Company. The execution, delivery, and performance of and compliance
with the Financing Documents, and the issuance and sale of the Shares and the
Conversion Shares pursuant thereto will not, with or without the passage of
time or giving of notice, result in any such material violation, or be in
conflict with or constitute a default under any such term, or result in the
creation of any mortgage, pledge, lien, encumbrance or charge upon any of the
properties or assets of the Company or the suspension, revocation,
impairment, forfeiture or nonrenewal of any permit license, authorization or
approval applicable to the Company, its business or operations or any of its
assets or properties.

     3.6 LITIGATION. Except as set forth in the Company SEC Documents, there
are no actions, suits, or legal, administrative, or other proceedings or
investigations pending or, to the Company's knowledge, threatened before any
court, agency, or other tribunal to which the Company is a party or against
or affecting any of the property, assets, businesses, or financial condition
of the Company. The Company is not in default with respect to any order,
writ, injunction, or decree of any federal, state, local or foreign court,
department, agency, or instrumentality to which it is a party.

                                       4
<Page>

     3.7 GOVERNMENTAL APPROVALS; THIRD PARTY CONSENTS. Except for certain
filings required by federal and state securities laws, all consents,
approvals, or authorizations of, or registrations, qualifications,
designations, declarations, or filings with, any federal or state
governmental authority, and all consents, approvals or authorizations of any
third party required in connection with the execution of the Financing
Documents and the performance of the transactions contemplated thereby
(including the issuance and sale of the Shares) have been obtained by the
Company. The Company has, or has rights to acquire, all licenses, permits,
and other similar authority necessary for the conduct of its business as now
being conducted by it, the lack of which could materially and adversely
affect the operations or condition, financial or otherwise, of the Company,
and it is not in default in any material respect under any of such licenses,
permits or other similar authority.

     3.8 OFFERING VALID. Assuming the accuracy of the representations and
warranties of Purchasers contained in SECTION 4 hereof, the offer, sale and
issuance of the Shares and the Conversion Shares will be exempt from the
registration requirements of the Securities Act, and will have been
registered or qualified, or are exempt from registration and qualification,
under the registration, permit or qualification requirements of all
applicable state securities laws.

     3.9 ABSENCE OF CERTAIN CHANGES. Except as disclosed in the Company SEC
Documents, since March 31, 2002 there has been no change or development which
individually or in the aggregate has had or could have a "Material Adverse
Effect." For the purpose of this SECTION 3.9, "MATERIAL ADVERSE EFFECT" shall
mean any material adverse effect on (i) the Shares, (ii) the ability of the
Company to perform its obligations hereunder (including the issuance of the
Shares), or (iii) the business, operations, properties or financial condition
of the Company and its subsidiaries, taken as a whole.

     3.10 INTELLECTUAL PROPERTY. The Company and each of its subsidiaries
owns or is licensed to use all patents, patent applications, trademarks,
trademark applications, trade names, service marks, copyrights, copyright
applications, licenses, permits, know-how (including trade secrets and other
unpatented and/or unpatentable proprietary or confidential information,
systems or procedures) and other similar rights and proprietary knowledge
(collectively, "INTANGIBLES") necessary for the conduct of its business as
now being conducted and as proposed to be conducted. To the Company's
knowledge, neither the Company nor any of its subsidiaries is infringing or
in conflict with any other person with respect to any Intangibles. The
Intangibles are valid and enforceable, and no registration relating thereto
has lapsed, expired or been abandoned or canceled or is the subject of
cancellation or other adversarial proceedings, and all applications therefor
are pending and in good standing. The Company has complied, in all material
respects, with its contractual obligations relating to the protection of the
Intangibles used pursuant to licenses. To the Company's knowledge, no person
is infringing on or violating the Intangibles owned or used by the Company.

     3.11 DISCLOSURE. All information relating to or concerning the Company
and its subsidiaries set forth in this Agreement or provided to the
Purchasers in writing in connection with the transactions contemplated hereby
is true and correct in all material respects and the Company has not omitted
to state any material fact necessary in order to make the statements

                                       5
<Page>

made herein or therein, in light of the circumstances under which they were
made, not misleading; provided, however, that this representation and
warranty shall not apply to any information contained within any of the
foregoing related to future events, or the projected future financial
performance of the Company, including any financial projections, or
descriptions of potential strategic or business relationships between the
Company and third parties.

     3.12 NO INTEGRATED OFFERING. Neither the Company, nor any of its
affiliates, nor any person acting on its or their behalf, has, directly or
indirectly, made any offers or sales of any security or solicited any offers
to buy any security under circumstances that would require registration of
the Shares being offered hereby under the Securities Act or cause this
offering of Shares to be integrated with any prior offering of securities of
the Company for purposes of the Securities Act or any applicable stockholder
approval provisions, including, without limitation, the applicable
regulations of the American Stock Exchange.

     3.13 FORM S-3 ELIGIBILITY. The Company is currently eligible to register
the resale of its Common Stock on a registration statement on Form S-3 under
the Securities Act. To the knowledge of the Company, there exist no facts or
circumstances (including without limitation any required approvals or waivers
of any circumstances that may delay or prevent the obtaining of accountant's
consents) that would prohibit or delay the preparation and filing of a
registration statement on Form S-3 with respect to the Registrable Securities
in accordance with SECTION 6.1(a) hereof.

SECTION 4. REPRESENTATIONS AND WARRANTIES OF PURCHASERS.

     Each Purchaser hereby represents and warrants to the Company as follows:

     4.1 REQUISITE POWER AND AUTHORITY. Purchaser is a corporation, limited
liability company, or limited partnership duly organized, validly existing
and in good standing under the laws of the jurisdiction of its formation, and
has all requisite limited liability company, partnership or corporate power
and authority to own its assets and operate its business. Purchaser has all
necessary corporate, limited liability company or partnership power and
authority under all applicable provisions of law to execute and deliver this
Agreement and to carry out the provisions hereof. All action on Purchaser's
part required for the lawful execution and delivery of this Agreement has
been or will be effectively taken prior to the Closing Date. Upon its
execution and delivery, this Agreement will be a valid and binding obligation
of Purchaser, enforceable in accordance with its terms, except as limited by
(a) applicable bankruptcy, insolvency, reorganization, moratorium or other
laws of general application affecting enforcement of creditors' rights, (b)
general principles of equity that restrict the availability of equitable
remedies and (c) applicable law related to the enforceability of the
indemnification provisions set forth in SECTION 6 of this Agreement.

     4.2 NONASSIGNMENT OF CLAIMS. Purchaser has not transferred, sold, assigned
or hypothecated any part of its claim, or right to make a claim, under Section
2(c) of the Registration Rights Agreement. Purchaser's full and complete claim
under Section 2(c) of the Registration Rights Agreement is set forth opposite
its name on SCHEDULE 1.

                                       6
<Page>

     4.3 INVESTMENT REPRESENTATIONS. Purchaser understands that the Shares have
not been registered under the Securities Act. Purchaser also understands that
the Shares are being offered and sold pursuant to an exemption from registration
contained in the Securities Act based in part upon Purchaser's representations
contained in this Agreement. Each Purchaser, as to itself, hereby represents and
warrants to the Company as follows:

         (a)  ACQUISITION FOR OWN ACCOUNT. Purchaser is acquiring the Shares
for Purchaser's own account for investment purposes only, and not with a view
towards their distribution.

         (b)  ACCREDITED INVESTOR. Purchaser represents that it is an
"accredited investor" within the meaning of Regulation D under the Securities
Act.

         (c)  COMPANY INFORMATION. Purchaser has had an opportunity to ask
questions of, and receive answers from, directors, officers and management of
the Company relating to the Company's business, management and financial
affairs and to the terms and conditions of this investment. Purchaser is
aware of the Company's pending merger with Avatech Solutions, Inc., and has
had a chance to review the Company's filings with the SEC regarding such
merger, including, without limitation, review of the Agreement and Plan of
Merger filed with the SEC on Form 8-K on May 2, 2002.

         (d)  RULE 144. Purchaser acknowledges and agrees that the Shares
must be held indefinitely unless they are subsequently registered under the
Securities Act or an exemption from such registration is available. Purchaser
has been advised or is aware of the provisions of Rule 144 promulgated under
the Securities Act, which permits limited resale of securities purchased in a
private placement subject to the satisfaction of certain conditions,
including, among other things: the availability of certain current public
information about the Company; the resale occurring not less than one year
after a party has purchased and paid for the security to be sold; the sale
being through an unsolicited "broker's transaction" or in transactions
directly with a market maker (as said term is defined under the Securities
Act); and the number of securities being sold during any three-month period
not exceeding specified limitations.

          (e)  RESIDENCE. The residence of Purchaser (if an individual), or
the office or offices of Purchaser in which its investment decision was made
is located at the address or addresses of Purchaser as stated on the
signature pages hereto.

SECTION 5. CONDITIONS TO CLOSING.

     5.1  CONDITIONS TO PURCHASERS' OBLIGATIONS AT THE CLOSING. Purchasers'
obligations to accept the Shares at the Closing are subject to the
satisfaction, at or prior to the Closing, of the following conditions:

          (a)  REPRESENTATIONS AND WARRANTIES TRUE; PERFORMANCE OF
OBLIGATIONS. The representations and warranties made by the Company in
SECTION 3 hereof shall be true and correct in all material respects as of the
Closing Date with the same force and effect as if they

                                       7
<Page>

had been made as of the Closing Date, and the Company shall have performed
all obligations and conditions herein required to be performed or observed by
it on or prior to the Closing.

          (b)  LEGAL INVESTMENT. On the Closing Date, the issuance of the
Shares, and the proposed issuance of the Conversion Shares, shall be legally
permitted by all laws and regulations to which Purchasers and the Company are
subject.

          (c)  CONSENTS, PERMITS, AND WAIVERS. The Company shall have
obtained any and all consents, permits and waivers necessary or appropriate
for consummation of the transactions contemplated by the Financing Documents
(except for such as may be properly obtained subsequent to the Closing).

          (d)  FILING OF CERTIFICATE. The Certificate shall have been filed
with the Secretary of State of the State of Delaware.

          (e)  CORPORATE DOCUMENTS. The Company shall have delivered to
Purchasers or their counsel, copies of all corporate documents of the Company
as Purchasers shall have reasonably requested.

          (f)  RESERVATION AND LISTING OF CONVERSION SHARES. The Conversion
Shares issuable upon conversion of the Shares shall have been duly authorized
and reserved for issuance upon such conversion, and the Company will file an
application to have the Conversion Shares listed with the American Stock
Exchange as soon as practicable following the Closing.

          (g)  CLOSING CERTIFICATES. The Company shall have delivered to
Purchasers:

               (i)  a certificate of the Secretary of the Company dated as of
the Closing Date, certifying as to the incumbency of the officers of the
Company executing the Financing Documents and attaching thereto a copy of the
Certificate, as filed with the Secretary of State of the State of Delaware
and a copy of the resolutions or consent of the board of directors of the
Company authorizing and approving the Company's execution, delivery and
performance of this Agreement and the filing of the Certificate; and

               (ii) a certificate, executed by the Chief Executive Officer of
the Company as of the Closing Date, certifying as to the fulfillment of all
of the conditions of Purchasers' obligations under this Agreement, as set
forth in this SECTION 5.

          (h)  PROCEEDINGS AND DOCUMENTS. All corporate and other proceedings
in connection with the transactions contemplated at the Closing hereby and
all documents and instruments incident to such transactions shall be
reasonably satisfactory in substance and form to Purchasers and their special
counsel, and Purchasers and their special counsel shall have received all
such counterpart originals or certified or other copies of such documents as
they may reasonably request.

     5.2 CONDITIONS TO OBLIGATIONS OF THE COMPANY AT CLOSING. The Company's
obligation to issue the Shares at the Closing is subject to the satisfaction,
on or prior to the Closing, of the following conditions:

                                       8
<Page>

           (a)  REPRESENTATIONS AND WARRANTIES TRUE; PERFORMANCE OF
OBLIGATIONS. The representations and warranties made by Purchasers in SECTION
4 hereof shall be true and correct in all material respects at the Closing
Date, with the same force and effect as if they had been made on and as of
the Closing Date, and Purchasers shall have performed all obligations and
conditions herein required to be performed or observed by Purchasers on or
prior to the Closing.

           (b)  FILING OF CERTIFICATE. The Certificate shall have been filed
with the Secretary of State of the State of Delaware.

           (c)  CONSENTS, PERMITS, AND WAIVERS. The Company shall have
obtained any and all consents, permits and waivers necessary or appropriate
for consummation of the transactions contemplated by the Financing Documents
(except for such as may be properly obtained subsequent to the Closing).

SECTION 6. COVENANTS OF THE PARTIES FOR THE PERIOD FOLLOWING CLOSING.

     6.1   COVENANTS OF THE COMPANY TO REGISTER THE CONVERSION SHARES.

           (a)  The Company shall file with the SEC, on or prior to the date
which is one hundred twenty (120) days after the effective date of the
proposed merger with Avatech Solutions, Inc. pursuant to that certain
Agreement and Plan of Merger dated May 1, 2002 among the Company, Raven
Acquisition Corporation and Avatech Solutions, Inc. (the "FILING DATE") a
registration statement on Form S-3 (or, if Form S-3 is not then available, on
such form of registration statement as is then available, to effect a
registration of all of the Registrable Securities covering the resale of the
Conversion Shares (the "REGISTRATION STATEMENT"). The Registration Statement
(and each amendment or supplement thereto and each request for acceleration
of effectiveness thereof) shall be provided to (and subject to the review by)
the Purchasers and a single firm of counsel designated by the Purchasers (the
"PURCHASERS' COUNSEL") at least five business days prior to its filing or
other submission in the case of the Registration Statement, and at least two
business days prior to its filing (or such lesser time as may be necessary)
in the case of each amendment or supplement thereto.

           (b)  The Purchasers may offer and sell the Registrable Securities
pursuant to the Registration Statement in an underwritten offering. In any
such underwritten offering, the Purchasers who hold a majority in interest of
the Registrable Securities subject to such underwritten offering, shall have
the right to select the Purchasers' counsel and an investment banker or
bankers and manager or managers to administer the offering, which investment
banker or bankers or manager or managers shall be reasonably satisfactory to
the Company. In the event that any Purchasers elect not to participate in
such underwritten offering, the Registration Statement covering all of the
Registrable Securities shall contain appropriate plans of distribution
reasonably satisfactory to the Purchasers participating in such underwritten
offering and the Purchasers electing not to participate in such underwritten
offering (including, without limitation, the ability of nonparticipating
Purchasers to sell from time to time and at any time during the effectiveness
of such Registration Statement).

                                       9
<Page>

          (c)  In connection with the registration of the Registrable
Securities, the Company shall have the following obligations:

               (i)  The Company shall prepare and file with the SEC, on or
before the Filing Date, the Registration Statement, and shall use its best
efforts to cause such Registration Statement to become effective as soon as
practicable after such filing. The Company shall keep such Registration
Statement effective pursuant to Rule 415 at all times until the earlier of
(A) the date on which all of the Registrable Securities (in the reasonable
opinion of counsel to the Purchasers) may be immediately sold to the public
without registration or restriction pursuant to Rule 144(k) under the
Securities Act and (B) such time as all the Registrable Securities have been
sold (the "REGISTRATION PERIOD").

               (ii) The Company shall prepare and file with the SEC such
amendments (including post-effective amendments) and supplements to the
Registration Statement and the prospectus used in connection with the
Registration Statement as may be necessary to keep the Registration Statement
effective at all times during the Registration Period, and, during such
period, comply with the provisions of the Securities Act with respect to the
disposition of all Registrable Securities of the Company covered by the
Registration Statement until such time as all of such Registrable Securities
have been disposed of in accordance with the intended methods of disposition
by the seller or sellers thereof as set forth in the Registration Statement.
In the event the number of shares available under the Registration Statement
filed pursuant to this Agreement is, for any three (3) consecutive trading
days (the last of such three (3) trading days being the "REGISTRATION TRIGGER
Date"), insufficient to cover one hundred percent (100%) of the Registrable
Securities, the Company shall amend the Registration Statement, or file a new
Registration Statement (on the shortest form available therefor, if
applicable), or both, so as to cover one hundred fifty percent (150%) of the
Registrable Securities as of the Registration Trigger Date, in each case, as
soon as practicable, but in any event within ten (10) business days after the
Registration Trigger Date. The Company shall use its best efforts to cause
such amendment and/or new Registration Statement to become effective as soon
as practicable following the filing thereof.

               (iii) The Company shall furnish to each Purchaser whose
Registrable Securities are included in the Registration Statement and to
Purchasers' Counsel promptly after the same is prepared and publicly
distributed, filed with the SEC, or received by the Company, one copy of the
Registration Statement and any amendment thereto, each preliminary prospectus
and prospectus and each amendment or supplement thereto. At the request of
any Purchaser, the Company shall furnish to such Purchaser (A) a copy of each
letter written by or on behalf of the Company to the SEC or the staff of the
SEC no later than the date of submission of such letter (including, without
limitation, any request to accelerate the effectiveness of any Registration
Statement or amendment thereto), and, promptly upon receipt, each item of
correspondence from the SEC or the staff of the SEC, in each case relating to
the Registration Statement (other than any portion, if any, thereof which
contains information for which the Company has sought confidential
treatment), and the Company shall cooperate with each Purchaser in making all
reasonable modifications requested by such Purchaser or Purchasers' Counsel
to any portion of any letter or other correspondence from the Company to the
SEC that addresses the transactions contemplated by this Agreement, (B) on,
or as soon as practicable following, the date of effectiveness of the
Registration Statement or any amendment thereto, a notice stating that the

                                       10
<Page>

Registration Statement or amendment has been declared effective, and (C) such
number of copies of a prospectus, including a preliminary prospectus, and all
amendments and supplements thereto and such other documents as such Purchaser
may reasonably request in order to facilitate the disposition of the
Registrable Securities owned by such Purchaser.

               (iv) The Company shall use its best efforts to (A) register
and qualify the Registrable Securities covered by the Registration Statement
under such other securities or "blue sky" laws of such jurisdictions in the
United States as each Purchaser who holds Registrable Securities being
offered reasonably requests, (B) prepare and file in those jurisdictions such
amendments (including post-effective amendments) and supplements to such
registrations and qualifications as may be necessary to maintain the
effectiveness thereof during the Registration Period, (C) take such other
actions as may be necessary to maintain such registrations and qualifications
in effect at all times during the Registration Period, and (D) take all other
actions reasonably necessary or advisable to qualify the Registrable
Securities for sale in such jurisdictions; PROVIDED, HOWEVER, that the
Company shall not be required in connection herewith or as a condition
thereto to (V) qualify to do business in any jurisdiction where it would not
otherwise be required to qualify but for this SECTION 6.1(c)(iv), (W) subject
itself to general taxation in any such jurisdiction, (X) file a general
consent to service of process in any such jurisdiction, (Y) provide any
undertakings that cause the Company undue expense or burden, or (Z) make any
change in its certificate of incorporation or bylaws, which in each case the
board of directors of the Company determines to be contrary to the best
interests of the Company and its stockholders.

               (v)  In the event the Purchasers who hold a majority in
interest of the Registrable Securities being offered in an offering select
underwriters for the offering, the Company shall enter into and perform its
obligations under an underwriting agreement, in usual and customary form,
including, without limitation, customary indemnification and contribution
obligations, with the underwriters of such offering.

               (vi) As promptly as practicable after becoming aware of such
event, the Company shall notify each Purchaser by telephone or facsimile of
the happening of any event, of which the Company has knowledge, as a result
of which the prospectus included in the Registration Statement, as then in
effect, includes an untrue statement of a material fact or omission to state
a material fact required to be stated therein or necessary to make the
statements therein not misleading, and use its best efforts promptly to
prepare a supplement or amendment to the Registration Statement to correct
such untrue statement or omission and deliver such number of copies of such
supplement or amendment to each Purchaser as such Purchaser may reasonably
request.

               (vii) The Company shall use its best efforts to prevent the
issuance of any stop order or other suspension of effectiveness of the
Registration Statement, and, if such an order is issued, to obtain the
withdrawal of such order at the earliest practicable date (including in each
case by amending or supplementing such Registration Statement) and to notify
each Purchaser who holds Registrable Securities being sold (or, in the event
of an underwritten offering, the managing underwriters) of the issuance of
such order and the resolution thereof (and if such Registration Statement is
supplemented or amended, deliver such number of copies of such supplement or
amendment to each Purchaser as such Purchaser may reasonably request).

                                       11
<Page>

               (viii) In the event of an underwritten offering, at the
request of any Purchaser whose Registrable Securities are included in the
Registration Statement, the Company shall furnish, on the date of
effectiveness of the Registration Statement (A) an opinion, dated as of such
date, from counsel representing the Company addressed to the Purchaser in the
form delivered to the underwriters, if any opinion is delivered to the
underwriters, and (B) a letter, dated such date, from the Company's
independent certified public accountants in the form delivered to the
underwriters, if any such "Comfort Letter" is delivered to the underwriters.

               (ix)   The Company shall provide a transfer agent and
registrar, which may be a single entity, for the Registrable Securities not
later than the effective date of the Registration Statement.

               (x)    The Company shall cooperate with the Purchasers who
hold Registrable Securities being offered and the managing underwriter or
underwriters, if any, to facilitate the timely preparation and delivery of
certificates (not bearing any restrictive legends) representing Registrable
Securities to be offered pursuant to the Registration Statement and enable
such certificates to be in such denominations or amounts, as the case may be,
as the managing underwriter or underwriters, if any, or the Purchasers may
reasonably request and registered in such names as the managing underwriter
or underwriters, if any, or the Purchasers may request, and, within three (3)
business days after a Registration Statement which includes Registrable
Securities is ordered effective by the SEC, the Company shall deliver, and
shall cause legal counsel selected by the Company to deliver, to the transfer
agent for the Registrable Securities (with copies to the Purchasers whose
Registrable Securities are included in such Registration Statement) an
opinion of such counsel that such Registrable Securities have been registered
under the Securities Act and that the restrictive legends on the certificates
representing such Registrable Securities may be removed.

               (xi)   At the request of Purchasers who hold a
majority-in-interest of the Registrable Securities, the Company shall prepare
and file with the SEC such amendments (including post-effective amendments)
and supplements to a Registration Statement and the prospectus used in
connection with the Registration Statement as may be necessary in order to
change the plan of distribution set forth in such Registration Statement.

               (xii)  The Company shall comply with all applicable laws
related to a Registration Statement and offering and sale of securities and
all applicable rules and regulations of governmental authorities in
connection therewith (including without limitation the Securities Act and the
Exchange Act, and the rules and regulations promulgated by the SEC).

               (xiii) From and after the date of this Agreement, the Company
shall not, and shall not agree to, allow the holders of any securities of the
Company to include any of their securities in any Registration Statement under
SECTION 6.1(a) hereof or any amendment or supplement thereto without the consent
of the holders of a majority in interest of the Registrable Securities.

          (d)  "REGISTRABLE SECURITIES" means the Conversion Shares and any
shares of capital stock issued or issuable, from time to time (with any
adjustments), as a distribution or in exchange for or otherwise with respect
to the foregoing; PROVIDED, HOWEVER, that Registrable

                                       12
<Page>

Securities shall not include any such Registrable Securities that (i) have
previously been registered pursuant to the Securities Act, (ii) are eligible
for public resale under Rule 144(k) under the Securities Act or (iii) are
eligible for public resale under the Securities Act pursuant to an exemption
from registration under the Securities Act.

          (e)  All reasonable expenses incurred by the Company or the
Purchasers in connection with registrations, filings or qualifications
pursuant to this SECTION 6 (excluding brokers' fees, underwriting discounts
and commissions, and similar selling expenses), including, without
limitation, all registration, listing and qualifications fees, printers and
accounting fees, the fees and disbursements of counsel for the Company, and
the fees and disbursements of Purchasers' Counsel, not in excess of $15,000,
shall be borne by the Company.

     6.2  COVENANTS OF THE PURCHASERS RELATED TO REGISTRATION. In connection
with the registration of the Registrable Securities, the Purchasers shall
have the following obligations:

          (a)  It shall be a condition precedent to the obligations of the
Company to complete the registration pursuant to this Agreement with respect
to the Registrable Securities of a particular Purchaser that such Purchaser
shall furnish to the Company such information regarding itself, the
Registrable Securities held by it and the intended method of disposition of
the Registrable Securities held by it as shall be reasonably required to
effect the registration of such Registrable Securities and shall execute such
documents in connection with such registration as the Company may reasonably
request. At least five (5) business days prior to the first anticipated
filing date of the Registration Statement the Company shall notify each
Purchaser of any information the Company inquires from each such Purchaser.

          (b)  Each Purchaser, by such Purchaser's acceptance of the
Registrable Securities, agrees to cooperate with the Company as reasonably
requested by the Company in connection with the preparation and filing of the
Registration Statement, unless such Purchaser has notified the Company in
writing of such Purchaser's election to exclude all of such Purchaser's
Registrable Securities from the Registration Statement.

          (c)  In the event Purchasers holding a majority in interest of the
Registrable Securities being offered determine to engage the services of an
underwriter, each Purchaser agrees to enter into and perform such Purchaser's
obligations under an underwriting agreement, in usual and customary form,
including, without limitation, indemnification and contribution obligations,
with the underwriter(s) of such offering and the Company and take such other
actions as are reasonably required in order to expedite or facilitate the
disposition of the Registrable Securities, unless such Purchaser has notified
the Company in writing of such Purchaser's election not to participate in
such underwritten distribution.

          (d)  No Purchaser may participate in any underwritten distribution
hereunder unless such Purchaser (i) agrees to sell such Purchaser's
Registrable Securities on the basis provided in any underwriting arrangements
in usual and customary form entered into by Company, (ii) completes and
executes all questionnaires, powers of attorney, indemnities, underwriting
agreements and other documents reasonably required under the terms of such
underwriting arrangements, and (iii) agrees to pay its pro rata share of all
underwriting discounts

                                       13
<Page>

and commissions and any expenses in excess of those payable by the Company
pursuant to SECTION 6.1(d).

     6.3 PURCHASERS' WAIVER OF PENALTY AMOUNT AND RELEASE OF CLAIMS. Each
Purchaser hereby (i) agrees to exchange the Company's debt, if any, owed to
the Purchaser under Section 2(c) of the Registration Rights Agreement for the
Shares, and upon issuance thereof, to cancel and mark paid such debt, (ii)
waives, as of the Closing Date upon issuance of the Shares, its claim to
payment of its portion of the Penalty Amount, whether or not owed, and (iii)
fully and forever releases and discharges, as of the Closing Date upon
issuance of the Shares, the Company, its officers, directors, shareholders,
successors, representatives, attorneys and assigns, of and from any and all
actions, causes of actions, claims, demands, damages, penalties or otherwise,
of every kind or nature whatsoever, in law or equity, whether known or
unknown, that such Purchaser may now have or claim at any future time to
have, based on, arising from or related to Section 2(c) of the Registration
Rights Agreement.

     6.4 MUTUAL INDEMNIFICATION RELATED TO REGISTRATION. Sections 6 and 7 of
the Registration Rights Agreement are hereby incorporated by reference and
shall govern as to all matters related to the indemnification or contribution
obligations of the parties under this SECTION 6. In construing Sections 6 and
7 of the Registration Rights Agreement for application herein, the terms
"Company," "Investor," "Registration Statement" and "Registrable Securities"
as used in the Registration Rights Agreement shall be deemed to mean the
Corporation, Purchaser, the Registration Statement required to be filed
pursuant to this SECTION 6, and the Registrable Securities as defined in
SECTION 6.1(d) hereof, respectively. All other defined terms shall have the
meaning attributed to them in Sections 6 and 7 of the Registration Rights
Agreement.

SECTION 7. MISCELLANEOUS.

     7.1 GOVERNING LAW. This Agreement shall be governed by the laws of the
State of Colorado as such laws are applied to agreements between Colorado
residents entered into and performed entirely in Colorado, except that the
Delaware General Corporation Law will govern as to matters of corporate law.

     7.2 SUCCESSORS AND ASSIGNS. Except as otherwise expressly provided
herein, the provisions hereof shall inure to the benefit of, and be binding
upon, the successors, assigns, heirs, executors and administrators of the
parties hereto and shall inure to the benefit of and be enforceable by each
person who shall be a holder of the Shares from time to time.

     7.3 ENTIRE AGREEMENT. The Financing Documents, the Exhibits, Schedules,
and the other documents delivered pursuant hereto constitute the full and
entire understanding and agreement between the parties with regard to the
subjects hereof and no party shall be liable or bound to any other in any
manner by any representations, warranties, covenants and agreements except as
specifically set forth herein and therein.

                                       14
<Page>

     7.4  SEVERABILITY. In case any provision of this Agreement shall be
invalid, illegal or unenforceable, the validity, legality and enforceability
of the remaining provisions shall not in any way be affected or impaired
thereby.

     7.5  AMENDMENT. This Agreement may be amended or modified only upon the
written consent of the Company and the holders representing at least a
majority of the Shares (treated as if converted and including any Conversion
Shares into which the Shares have been converted).

     7.6  DELAYS OR OMISSIONS. The failure of any party to exercise any right
or remedy under this Agreement or otherwise, or delay by a party in
exercising such right or remedy, shall not operate as a waiver thereof. It is
further agreed that any waiver of any provisions or conditions of this
Agreement must be in writing and shall be effective only to the extent
specifically set forth in such writing.

     7.7  NOTICES. All notices required or permitted hereunder shall be in
writing and shall be deemed effectively given upon the earlier of receipt
and: (a) the day sent by confirmed facsimile if sent during normal business
hours of the recipient, if not, then on the next business day; (b) three
business days after having been sent by registered or certified mail, return
receipt requested, postage prepaid; or (c) one day after deposit with a
nationally recognized overnight courier, specifying next day delivery, with
written verification of receipt. All communications shall be sent to the
Company at its principal place of business and to Purchasers at the addresses
set forth on the signature pages hereto or at such other address as the
Company or Purchaser may designate by ten days advance written notice to the
other parties hereto pursuant to this SECTION 7.7.

     7.8  EXPENSES. The Company hereby agrees to reimburse the Purchasers for
the documented legal fees and expenses of special counsel(s) to the
Purchasers related to the preparation and negotiation of the Financing
Documents, up to a maximum of $5,000 in the aggregate. The Purchasers will
determine the manner in which the $5,000 is allocated among the Purchasers.

     7.9  TITLES AND SUBTITLES. The titles of the sections and subsections of
this Agreement are for convenience of reference only and are not to be
considered in construing this Agreement.

     7.10 COUNTERPARTS. This Agreement may be delivered via facsimile and may
be executed in any number of counterparts, each of which shall be an
original, but all of which together shall constitute one instrument.

     7.11 PRONOUNS. All pronouns contained herein, and any variations
thereof, shall be deemed to refer to the masculine, feminine or neutral,
singular or plural, as the identity of the parties hereto may require.

                                       15
<Page>

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the date above first written.

COMPANY:

PLANETCAD INC.

By: /s/ David W. Hushbeck
    ----------------------------------
    David W. Hushbeck
    President and Chief Executive Officer

<TABLE>
<CAPTION>

PURCHASERS:
<S>                                                       <C>
CAPSTONE VENTURES SBIC, L.P.                              CYPRESS GROWTH FUND III, L.P.

By: Capstone SBIC Management, Inc.
                                                          By:  /s/ W. Baumgartner
                                                              ------------------------------
     Name: /s/ E. J. Fischer                              Name: Walter F. Baumgartner
           -----------------------------                        ----------------------------
     Title: President                                     Title: General Partner
            ----------------------------                         ---------------------------
     Address: 3000 Sand Hill Road,                        Address: 3000 Sand Hill Rd. #1-140
              --------------------------                           -------------------------
      1-290, Menlo Park, CA  94025                        Menlo Park, CA  94025
     -----------------------------------                  ----------------------------------

THE ROSER PARTNERSHIP III, SBIC, L.P.                     DASSAULT SYSTEMES CORP.

By:   /s/ Alan T. Valenti                                 By:  /s/ Thibault de Tersant
      ----------------------------------                       -----------------------------
Name:     Alan T. Valenti                                 Name:    Thibault de Tersant
      ----------------------------------                       -----------------------------
Title: Treasurer of its General Partner                   Title: Secretary
       ---------------------------------                         ---------------------------
Address: 1105 Spruce Street                               Address: 9 Quai Marcel Dassault
         -------------------------------                           -------------------------
         Boulder, CO 80302                                         9/150 Suresnes
----------------------------------------                  ----------------------------------

J. F. SHEA CO., INC., AS NOMINEE 2000-25                  DOLPHIN OFFSHORE PARTNERS, L.P.

By:   /s/ Edmund H. Shea, Jr.                             By:  /s/ Peter E. Salas
      ----------------------------------                       -----------------------------
Name:     Edmund H. Shea, Jr.                             Name:    Peter E. Salas
      ----------------------------------                       -----------------------------
Title: V. President                                       Title: General Partner
       ---------------------------------                         ---------------------------
Address:  655 Brea Canyon Rd.                             Address: 129 E. 17th St.
         -------------------------------                           -------------------------
          Walnut, CA 91789                                         NY, NY 10003
----------------------------------------                  ----------------------------------

</TABLE>

                                       16
<Page>

                                   SCHEDULE 1

<Table>
<Caption>
                 PURCHASER                                 SHARES             PENALTY AMOUNT
                 ---------                                 ------             --------------
<S>                                                      <C>                  <C>
Capstone Ventures SBIC, L.P.                               304,972               $109,790

The Roser Partnership III, SBIC, LP                        261,406                 94,106

J. F. Shea Co., Inc. as Nominee 2000-25                    200,411                 72,148

Cypress Growth Fund III, L.P.                              174,269                 62,737

Dassault Systemes Corp.                                    174,269                 62,737

Dolphin Offshore Partners, L.P.                             87,136                 31,369

TOTAL:                                                   1,202,463               $432,888
</Table>

                                       i

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00039-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00039-of-00352.parquet"}]]