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Blaize (NASDAQ: BZAI) CEO amends Form 4, clarifies 50K share sale

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4/A

Rhea-AI Filing Summary

Blaize Holdings, Inc. director and CEO Munagala Dinakar reported an amended insider transaction showing an open‑market sale of 50,000 shares of common stock at a weighted average price of $2.54 per share. After this sale, he directly holds 501,422 shares of common stock.

The amendment clarifies that a previously reported option exercise did not occur and that the 50,000 shares were sold from existing common stock holdings. It also restates and reclassifies his derivative holdings, including stock options, earnout shares, and restricted stock units, without reporting new transactions in those positions. The sale was executed under a pre‑arranged Rule 10b5‑1 trading plan adopted on December 12, 2025.

Positive

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Insights

Amended Form 4 clarifies a routine pre‑planned CEO share sale.

The filing shows CEO Munagala Dinakar sold 50,000 shares of Blaize Holdings common stock at a weighted average of $2.54 per share. Importantly, the amendment corrects an earlier filing by confirming no stock option was exercised; the shares came from existing holdings.

The sale occurred under a pre‑arranged Rule 10b5‑1 trading plan adopted on December 12, 2025, which suggests the timing was scheduled rather than opportunistic. Following the transaction, Dinakar still directly holds 501,422 common shares, alongside substantial option, RSU, and earnout positions with exercise prices between $0.57 and $14.62.

The restated derivative table moves earnout shares and unvested restricted stock units from common stock to derivative reporting, without new activity in those awards. Overall, this looks like an administrative correction and a planned liquidity event rather than a change in the CEO’s long‑term equity exposure.

Insider Munagala Dinakar
Role Chief Executive Officer
Sold 50,000 shs ($127K)
Type Security Shares Price Value
Sale Common Stock 50,000 $2.54 $127K
holding Employee Stock Option (right to purchase) -- -- --
holding Restricted Stock Units -- -- --
holding Earnout Shares -- -- --
holding Employee Stock Option (right to purchase) -- -- --
holding Employee Stock Option (right to purchase) -- -- --
holding Employee Stock Option (right to purchase) -- -- --
Holdings After Transaction: Common Stock — 501,422 shares (Direct, null); Employee Stock Option (right to purchase) — 4,150,347 shares (Direct, null); Restricted Stock Units — 2,421,971 shares (Direct, null); Earnout Shares — 1,371,303 shares (Direct, null)
Footnotes (1)
  1. On April 20, 2026, the reporting person filed a Form 4 (the "Original Form 4") which inadvertently reported that the reporting person exercised a stock option and sold the underlying stock. Instead, as reported in this amendment (this "Amendment"), the reporting person did not exercise the stock option and in fact sold the same number of shares of stock as originally reported in the Original Form 4 but from his Table I holdings. The reporting person's other holdings have been restated for convenience, and there have been no transactions in such holdings since the Original Form 4. The order of the footnotes in this Explanation of Responses section have been conformed to the above changes. The reported sales were effected pursuant to the reporting person's Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.50 to $2.63, inclusive. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided. In the reporting person's prior Form 4 filings, earnout shares and unvested restricted stock units had been reported in Table I. These holdings have been moved to Table II, and there have been no transactions in such holdings since the reporting person's last Form 4 filing. The stock option vests in 36 substantially equal monthly installments beginning on October 19, 2023. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. The restricted stock units vest 25% on December 1, 2027, and quarterly thereafter commencing on March 1, 2028. On January 13, 2025, the date of the Issuer's business combination, the reporting person received earnout shares in respect of the Issuer's business combination. Each eanout share represents a contingent right to receive one share of the Issuer's common stock if the trading price of the Issuer's common stock exceeds certain thresholds for 20 of 30 consecutive trading days post-closing of the Issuer's business combination. The stock option vests as to one third of the underlying shares on July 1, 2025 and thereafter in 24 equal monthly installments. The stock option to purchase one share of the Issuer's common stock for each stock option is fully vested and exercisable.
Common shares sold 50,000 shares Open-market sale at weighted average price on April 17, 2026
Sale price $2.54 per share Weighted average price; individual trades ranged from $2.50 to $2.63
Common shares held after sale 501,422 shares Direct common stock ownership following the reported transaction
Stock options at $1.18 5,755,192 underlying shares Employee stock option with $1.18 exercise price, expiring October 23, 2034
Stock options at $0.57 4,150,347 underlying shares Employee stock option with $0.57 exercise price, expiring September 18, 2033
Restricted stock units 2,421,971 underlying shares Each RSU represents a right to receive one common share
Earnout shares 1,371,303 underlying shares Earnout tied to Blaize business combination and future stock price thresholds
Rule 10b5-1 trading plan regulatory
"The reported sales were effected pursuant to the reporting person's Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
earnout shares financial
"the reporting person received earnout shares in respect of the Issuer's business combination."
Earnout shares are company stock promised to sellers as part of an acquisition that only becomes payable if the acquired business hits agreed future performance targets, like revenue or profit goals. They matter to investors because they can increase the number of shares outstanding (dilution), tie seller incentives to future success, and create uncertainty about the actual cost of the deal and future ownership unless the performance conditions are clearly understood.
restricted stock units financial
"In the reporting person's prior Form 4 filings, earnout shares and unvested restricted stock units had been reported in Table I."
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
Employee Stock Option (right to purchase) financial
"security_title: "Employee Stock Option (right to purchase)""
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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Munagala Dinakar

(Last)(First)(Middle)
C/O BLAIZE HOLDINGS, INC.
4659 GOLDEN FOOTHILL PARKWAY, SUITE 206

(Street)
EL DORADO HILLS CALIFORNIA 95762

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Blaize Holdings, Inc. [ BZAI ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chief Executive Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/17/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)
04/20/2026
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock04/17/2026S50,000(1)(2)D$2.54(3)501,422(4)D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Employee Stock Option (right to purchase)$0.57 (5)09/18/2033Common Stock4,150,3474,150,347(1)D
Restricted Stock Units(6) (7) (7)Common Stock2,421,9712,421,971D
Earnout Shares(8) (8)01/13/2030Common Stock1,371,3031,371,303D
Employee Stock Option (right to purchase)$1.18 (9)10/23/2034Common Stock5,755,1925,755,192D
Employee Stock Option (right to purchase)$1.29 (10)03/15/2027Common Stock114,650114,650D
Employee Stock Option (right to purchase)$14.62 (10)11/12/2028Common Stock176,503176,503D
Explanation of Responses:
1. On April 20, 2026, the reporting person filed a Form 4 (the "Original Form 4") which inadvertently reported that the reporting person exercised a stock option and sold the underlying stock. Instead, as reported in this amendment (this "Amendment"), the reporting person did not exercise the stock option and in fact sold the same number of shares of stock as originally reported in the Original Form 4 but from his Table I holdings. The reporting person's other holdings have been restated for convenience, and there have been no transactions in such holdings since the Original Form 4. The order of the footnotes in this Explanation of Responses section have been conformed to the above changes.
2. The reported sales were effected pursuant to the reporting person's Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.50 to $2.63, inclusive. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.
4. In the reporting person's prior Form 4 filings, earnout shares and unvested restricted stock units had been reported in Table I. These holdings have been moved to Table II, and there have been no transactions in such holdings since the reporting person's last Form 4 filing.
5. The stock option vests in 36 substantially equal monthly installments beginning on October 19, 2023.
6. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
7. The restricted stock units vest 25% on December 1, 2027, and quarterly thereafter commencing on March 1, 2028.
8. On January 13, 2025, the date of the Issuer's business combination, the reporting person received earnout shares in respect of the Issuer's business combination. Each eanout share represents a contingent right to receive one share of the Issuer's common stock if the trading price of the Issuer's common stock exceeds certain thresholds for 20 of 30 consecutive trading days post-closing of the Issuer's business combination.
9. The stock option vests as to one third of the underlying shares on July 1, 2025 and thereafter in 24 equal monthly installments.
10. The stock option to purchase one share of the Issuer's common stock for each stock option is fully vested and exercisable.
Remarks:
/s/ Harminder Sehmi, as Attorney-in-Fact06/10/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Blaize (BZAI) report for CEO Munagala Dinakar?

Blaize reported that CEO Munagala Dinakar sold 50,000 shares of common stock at a weighted average price of $2.54 per share. The amendment clarifies the sale came from existing holdings, not from exercising stock options previously described in an earlier Form 4.

Why did Blaize (BZAI) file an amended Form 4 for its CEO?

The company filed an amended Form 4 to correct a prior report that mistakenly showed a stock option exercise plus sale. The amendment states no option was exercised and that the 50,000 shares sold were from the CEO’s common stock holdings, while restating other equity awards for clarity.

Was the Blaize (BZAI) CEO’s 50,000 share sale pre‑planned?

Yes. The filing states the reported sales were executed under Munagala Dinakar’s Rule 10b5‑1 trading plan adopted on December 12, 2025. Such plans schedule trades in advance, indicating the timing of the sale was predetermined rather than a spontaneous market‑timing decision.

How many Blaize (BZAI) shares does the CEO hold after this transaction?

After the reported sale, CEO Munagala Dinakar directly holds 501,422 shares of Blaize common stock. In addition, he holds various equity awards, including stock options, restricted stock units, and earnout shares, which together represent significant additional potential exposure to Blaize equity.

What stock options and awards does the Blaize (BZAI) CEO retain?

The CEO retains multiple stock option grants with exercise prices of $14.62, $1.29, $1.18, and $0.57 per share, plus earnout shares and restricted stock units. These derivative positions cover millions of underlying Blaize common shares with expirations ranging from 2027 through 2034.

How did the Blaize (BZAI) filing treat earnout shares and RSUs for the CEO?

The amendment notes that earnout shares and unvested restricted stock units, previously shown as common stock, have been moved to the derivative section. The filing states there have been no transactions in these holdings since the CEO’s prior Form 4 filing.